How do I get a list of configured channel using DAQmx

I would like to know how to read the channels in a task list or the global channels that are setup in MAX. I use to be able to do it in DAQ using the read channel VI. I can't find any equivalent in DAQmx. My new system works only with DAQmx. My program allows the operator to select from the channels configured in MAX.

Hi Benegin,
This can be found under the DAQmx System property node. I have attatched a picture to help you find it.
-Sal
Attachments:
system_property_node.JPG ‏359 KB

Similar Messages

How can I get properties of global virtual channels using DAQmx?

I'm using DAQmx with VB6. In my app, I would like to be able to present the user with a list of available predefined channels to select from. I can use DAQmxGetSysGlobalChans to get a list of the channels, but I need a way to sort out which of these channels are defined as inputs, and which are outputs. It would also be nice to be able to query other properties of the virtual channel (for example, the device and physical channel being used). These all seem very simple things, but I haven't found anything like this in the documentation so far.
Thanks.

Try using DAQmxGetChanType(TaskHandle taskHandle, const char channel[ ], int32 *data)DAQmxGetChanType(TaskHandle taskHandle, const char channel[ ], int32 *data). This will return one of the following types:
DAQmx_Val_AI
10100
Analog input channel.
DAQmx_Val_AO
10102
Analog output channel.
DAQmx_Val_DI
10151
Digital input channel.
DAQmx_Val_DO
10153
Digital output channel.
DAQmx_Val_CI
10131
Counter input channel.
DAQmx_Val_CO
10132
Counter output channel.
Let me know if this works.
Regards,
L. Allen

How can i get the list of all tcode used by user of particular module

Hi,
How can i get the list of all tcode used by user of particular module (e.g FI , MM ,PP) within year .
Regards
Vikram

Login to your SAP System
Run TCode SE16
Type Table Name : TSTCT
Press F7 Key (Table Contents )
Go to Settings in menu bar
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How can I get a list of all channels of a device?

I'm writing a software for use in a couple of our labs to be run as an executable i.e. without LabView being installed on all machines.
Now there's also a couple of different daq hardwares in use. So I planned to have a config tool where the user can choose the appropriate - physical, not virtual - daq devices and channels like: temperature 1 measured by device 1, analog input 2.
Therefore I'd need a list of all available daq devices (which is somewhat possible) together with a list of all channels of a particular device. Is there any way to get this?
Unfortunately I don't want to use virtual channels since I don't want to bother the user with configuring them and btw I don't know if virtual channels work wit
h the pure run-time module of an executable.
Thanks!
Daniel

Hello Daniel,
You can use virtual channels with executables and there is actually a way to transfer the virtual channel configurations to the target computers so your users would never need to mess with configuring virtual channels. Once you have configured virtual channels, you can save the configuration within a .daq file. You can then include that .daq file as a support file of the executable and programmatically set the configuration of the target machine. The linked document below illustrates how to accomplish this.
How Do I Port a DAQ Configuration File With an Executable?
http://digital.ni.com/public.nsf/websearch/CB83B101E19EF83086256A3E0054206C
If you do not want to use virtual channels, the only other thing I can think of is to use the Get_D
AQ_Device_Info VI or function call. You can get a device code when using this VI or call and each code is associated with a specific instrument. You would then have to know (use the device's user manual) to determine how many channels the corresponding device has. Without virtual channels, you would have to use a channel number (0,1,2,...etc) and would not be able to use a string ("temperature 1 measured by device 1").
So, I think using virtual channels and transferring the .daq file to the target machines with the executable will be the best option. I hope this helps.
Regards,
Todd D.
NI Applications Engineer

How can I get a list of BSSIDs without using netsh?

I'm looking for an object that would have contents similar to the output of
netsh wlan show networks mode=bssid
I don't want to use unreliable parsing of text output, so using netsh is out. The WMI interface that worked in windows xp doesn't work now. There's an API, but there is no NET interface so it's pretty difficult to work with in powershell.
I know of a couple of adapters, but I'd like to keep this contained in one script. I don't think I could find or write a type for the API that I could invoke in powershell.
Is there anything else I'm missing?

Oh, sorry, you have said that you don't want to use netsh.
I will involve someone familiar with this to further look at this issue. Hope there is a way for you to use without the usage of netsh.
There might be some time delay. Appreciate your patience.
Thank you for your understanding and support.
Regards,
Yan Li
Cataleya Li
TechNet Community Support
Thanks, but I think I got it all figured out. I used the C# code from the managed wifi api project (http://managedwifi.codeplex.com/) though it needed a little tweaking - had to get everything in one
namespace so powershell could easily consume it without external files. Had to do a little manual type conversion with the output because yay unmanaged and untyped API output. This still needs some tweaking to present it better, but this will do
the basics.
Note that this is two parts. String all the code from this post and the next into one ps1.
$NativeWifiCode = @'
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Runtime.InteropServices;
using System.Net.NetworkInformation;
using System.Threading;
using System.Text;
using System.Diagnostics;
namespace NativeWifi
/// <summary>
/// Represents a client to the Zeroconf (Native Wifi) service.
/// </summary>
/// <remarks>
/// This class is the entrypoint to Native Wifi management. To manage WiFi settings, create an instance
/// of this class.
/// </remarks>
public static class Wlan
#region P/Invoke API
/// <summary>
/// Defines various opcodes used to set and query parameters for an interface.
/// </summary>
/// <remarks>
/// Corresponds to the native <c>WLAN_INTF_OPCODE</c> type.
/// </remarks>
public enum WlanIntfOpcode
/// <summary>
/// Opcode used to set or query whether auto config is enabled.
/// </summary>
AutoconfEnabled = 1,
/// <summary>
/// Opcode used to set or query whether background scan is enabled.
/// </summary>
BackgroundScanEnabled,
/// <summary>
/// Opcode used to set or query the media streaming mode of the driver.
/// </summary>
MediaStreamingMode,
/// <summary>
/// Opcode used to set or query the radio state.
/// </summary>
RadioState,
/// <summary>
/// Opcode used to set or query the BSS type of the interface.
/// </summary>
BssType,
/// <summary>
/// Opcode used to query the state of the interface.
/// </summary>
InterfaceState,
/// <summary>
/// Opcode used to query information about the current connection of the interface.
/// </summary>
CurrentConnection,
/// <summary>
/// Opcose used to query the current channel on which the wireless interface is operating.
/// </summary>
ChannelNumber,
/// <summary>
/// Opcode used to query the supported auth/cipher pairs for infrastructure mode.
/// </summary>
SupportedInfrastructureAuthCipherPairs,
/// <summary>
/// Opcode used to query the supported auth/cipher pairs for ad hoc mode.
/// </summary>
SupportedAdhocAuthCipherPairs,
/// <summary>
/// Opcode used to query the list of supported country or region strings.
/// </summary>
SupportedCountryOrRegionStringList,
/// <summary>
/// Opcode used to set or query the current operation mode of the wireless interface.
/// </summary>
CurrentOperationMode,
/// <summary>
/// Opcode used to query driver statistics.
/// </summary>
Statistics = 0x10000101,
/// <summary>
/// Opcode used to query the received signal strength.
/// </summary>
RSSI,
SecurityStart = 0x20010000,
SecurityEnd = 0x2fffffff,
IhvStart = 0x30000000,
IhvEnd = 0x3fffffff
/// <summary>
/// Specifies the origin of automatic configuration (auto config) settings.
/// </summary>
/// <remarks>
/// Corresponds to the native <c>WLAN_OPCODE_VALUE_TYPE</c> type.
/// </remarks>
public enum WlanOpcodeValueType
/// <summary>
/// The auto config settings were queried, but the origin of the settings was not determined.
/// </summary>
QueryOnly = 0,
/// <summary>
/// The auto config settings were set by group policy.
/// </summary>
SetByGroupPolicy = 1,
/// <summary>
/// The auto config settings were set by the user.
/// </summary>
SetByUser = 2,
/// <summary>
/// The auto config settings are invalid.
/// </summary>
Invalid = 3
public const uint WLAN_CLIENT_VERSION_XP_SP2 = 1;
public const uint WLAN_CLIENT_VERSION_LONGHORN = 2;
[DllImport("wlanapi.dll")]
public static extern int WlanOpenHandle(
[In] UInt32 clientVersion,
[In, Out] IntPtr pReserved,
[Out] out UInt32 negotiatedVersion,
[Out] out IntPtr clientHandle);
[DllImport("wlanapi.dll")]
public static extern int WlanCloseHandle(
[In] IntPtr clientHandle,
[In, Out] IntPtr pReserved);
[DllImport("wlanapi.dll")]
public static extern int WlanEnumInterfaces(
[In] IntPtr clientHandle,
[In, Out] IntPtr pReserved,
[Out] out IntPtr ppInterfaceList);
[DllImport("wlanapi.dll")]
public static extern int WlanQueryInterface(
[In] IntPtr clientHandle,
[In, MarshalAs(UnmanagedType.LPStruct)] Guid interfaceGuid,
[In] WlanIntfOpcode opCode,
[In, Out] IntPtr pReserved,
[Out] out int dataSize,
[Out] out IntPtr ppData,
[Out] out WlanOpcodeValueType wlanOpcodeValueType);
[DllImport("wlanapi.dll")]
public static extern int WlanSetInterface(
[In] IntPtr clientHandle,
[In, MarshalAs(UnmanagedType.LPStruct)] Guid interfaceGuid,
[In] WlanIntfOpcode opCode,
[In] uint dataSize,
[In] IntPtr pData,
[In, Out] IntPtr pReserved);
/// <param name="pDot11Ssid">Not supported on Windows XP SP2: must be a <c>null</c> reference.</param>
/// <param name="pIeData">Not supported on Windows XP SP2: must be a <c>null</c> reference.</param>
[DllImport("wlanapi.dll")]
public static extern int WlanScan(
[In] IntPtr clientHandle,
[In, MarshalAs(UnmanagedType.LPStruct)] Guid interfaceGuid,
[In] IntPtr pDot11Ssid,
[In] IntPtr pIeData,
[In, Out] IntPtr pReserved);
/// <summary>
/// Defines flags passed to <see cref="WlanGetAvailableNetworkList"/>.
/// </summary>
[Flags]
public enum WlanGetAvailableNetworkFlags
/// <summary>
/// Include all ad-hoc network profiles in the available network list, including profiles that are not visible.
/// </summary>
IncludeAllAdhocProfiles = 0x00000001,
/// <summary>
/// Include all hidden network profiles in the available network list, including profiles that are not visible.
/// </summary>
IncludeAllManualHiddenProfiles = 0x00000002
/// <summary>
/// The header of an array of information about available networks.
/// </summary>
[StructLayout(LayoutKind.Sequential)]
internal struct WlanAvailableNetworkListHeader
/// <summary>
/// Contains the number of <see cref="WlanAvailableNetwork"/> items following the header.
/// </summary>
public uint numberOfItems;
/// <summary>
/// The index of the current item. The index of the first item is 0.
/// </summary>
public uint index;
/// <summary>
/// Defines the flags which specify characteristics of an available network.
/// </summary>
[Flags]
public enum WlanAvailableNetworkFlags
/// <summary>
/// This network is currently connected.
/// </summary>
Connected = 0x00000001,
/// <summary>
/// There is a profile for this network.
/// </summary>
HasProfile = 0x00000002
/// <summary>
/// Contains information about an available wireless network.
/// </summary>
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
public struct WlanAvailableNetwork
/// <summary>
/// Contains the profile name associated with the network.
/// If the network doesn't have a profile, this member will be empty.
/// If multiple profiles are associated with the network, there will be multiple entries with the same SSID in the visible network list. Profile names are case-sensitive.
/// </summary>
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 256)]
public string profileName;
/// <summary>
/// Contains the SSID of the visible wireless network.
/// </summary>
public Dot11Ssid dot11Ssid;
/// <summary>
/// Specifies whether the network is an infrastructure or an ad-hoc one.
/// </summary>
public Dot11BssType dot11BssType;
/// <summary>
/// Indicates the number of BSSIDs in the network.
/// </summary>
public uint numberOfBssids;
/// <summary>
/// Indicates whether the network is connectable.
/// </summary>
public bool networkConnectable;
/// <summary>
/// Indicates why a network cannot be connected to. This member is only valid when <see cref="networkConnectable"/> is <c>false</c>.
/// </summary>
public WlanReasonCode wlanNotConnectableReason;
/// <summary>
/// The number of PHY types supported on available networks.
/// The maximum value of this field is 8. If more than 8 PHY types are supported, <see cref="morePhyTypes"/> must be set to <c>true</c>.
/// </summary>
private uint numberOfPhyTypes;
/// <summary>
/// Contains an array of <see cref="Dot11PhyType"/> values that represent the PHY types supported by the available networks.
/// When <see cref="numberOfPhyTypes"/> is greater than 8, this array contains only the first 8 PHY types.
/// </summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
private Dot11PhyType[] dot11PhyTypes;
/// <summary>
/// Gets the <see cref="Dot11PhyType"/> values that represent the PHY types supported by the available networks.
/// </summary>
public Dot11PhyType[] Dot11PhyTypes
get
Dot11PhyType[] ret = new Dot11PhyType[numberOfPhyTypes];
Array.Copy(dot11PhyTypes, ret, numberOfPhyTypes);
return ret;
/// <summary>
/// Specifies if there are more than 8 PHY types supported.
/// When this member is set to <c>true</c>, an application must call <see cref="WlanClient.WlanInterface.GetNetworkBssList"/> to get the complete list of PHY types.
/// <see cref="WlanBssEntry.phyId"/> contains the PHY type for an entry.
/// </summary>
public bool morePhyTypes;
/// <summary>
/// A percentage value that represents the signal quality of the network.
/// This field contains a value between 0 and 100.
/// A value of 0 implies an actual RSSI signal strength of -100 dbm.
/// A value of 100 implies an actual RSSI signal strength of -50 dbm.
/// You can calculate the RSSI signal strength value for values between 1 and 99 using linear interpolation.
/// </summary>
public uint wlanSignalQuality;
/// <summary>
/// Indicates whether security is enabled on the network.
/// </summary>
public bool securityEnabled;
/// <summary>
/// Indicates the default authentication algorithm used to join this network for the first time.
/// </summary>
public Dot11AuthAlgorithm dot11DefaultAuthAlgorithm;
/// <summary>
/// Indicates the default cipher algorithm to be used when joining this network.
/// </summary>
public Dot11CipherAlgorithm dot11DefaultCipherAlgorithm;
/// <summary>
/// Contains various flags specifying characteristics of the available network.
/// </summary>
public WlanAvailableNetworkFlags flags;
/// <summary>
/// Reserved for future use. Must be set to NULL.
/// </summary>
uint reserved;
[DllImport("wlanapi.dll")]
public static extern int WlanGetAvailableNetworkList(
[In] IntPtr clientHandle,
[In, MarshalAs(UnmanagedType.LPStruct)] Guid interfaceGuid,
[In] WlanGetAvailableNetworkFlags flags,
[In, Out] IntPtr reservedPtr,
[Out] out IntPtr availableNetworkListPtr);
[Flags]
public enum WlanProfileFlags
/// <remarks>
/// The only option available on Windows XP SP2.
/// </remarks>
AllUser = 0,
GroupPolicy = 1,
User = 2
[DllImport("wlanapi.dll")]
public static extern int WlanSetProfile(
[In] IntPtr clientHandle,
[In, MarshalAs(UnmanagedType.LPStruct)] Guid interfaceGuid,
[In] WlanProfileFlags flags,
[In, MarshalAs(UnmanagedType.LPWStr)] string profileXml,
[In, Optional, MarshalAs(UnmanagedType.LPWStr)] string allUserProfileSecurity,
[In] bool overwrite,
[In] IntPtr pReserved,
[Out] out WlanReasonCode reasonCode);
/// <summary>
/// Defines the access mask of an all-user profile.
/// </summary>
[Flags]
public enum WlanAccess
/// <summary>
/// The user can view profile permissions.
/// </summary>
ReadAccess = 0x00020000 | 0x0001,
/// <summary>
/// The user has read access, and the user can also connect to and disconnect from a network using the profile.
/// </summary>
ExecuteAccess = ReadAccess | 0x0020,
/// <summary>
/// The user has execute access and the user can also modify and delete permissions associated with a profile.
/// </summary>
WriteAccess = ReadAccess | ExecuteAccess | 0x0002 | 0x00010000 | 0x00040000
/// <param name="flags">Not supported on Windows XP SP2: must be a <c>null</c> reference.</param>
[DllImport("wlanapi.dll")]
public static extern int WlanGetProfile(
[In] IntPtr clientHandle,
[In, MarshalAs(UnmanagedType.LPStruct)] Guid interfaceGuid,
[In, MarshalAs(UnmanagedType.LPWStr)] string profileName,
[In] IntPtr pReserved,
[Out] out IntPtr profileXml,
[Out, Optional] out WlanProfileFlags flags,
[Out, Optional] out WlanAccess grantedAccess);
[DllImport("wlanapi.dll")]
public static extern int WlanGetProfileList(
[In] IntPtr clientHandle,
[In, MarshalAs(UnmanagedType.LPStruct)] Guid interfaceGuid,
[In] IntPtr pReserved,
[Out] out IntPtr profileList
[DllImport("wlanapi.dll")]
public static extern void WlanFreeMemory(IntPtr pMemory);
[DllImport("wlanapi.dll")]
public static extern int WlanReasonCodeToString(
[In] WlanReasonCode reasonCode,
[In] int bufferSize,
[In, Out] StringBuilder stringBuffer,
IntPtr pReserved
/// <summary>
/// Defines the mask which specifies where a notification comes from.
/// </summary>
[Flags]
public enum WlanNotificationSource
None = 0,
/// <summary>
/// All notifications, including those generated by the 802.1X module.
/// </summary>
All = 0X0000FFFF,
/// <summary>
/// Notifications generated by the auto configuration module.
/// </summary>
ACM = 0X00000008,
/// <summary>
/// Notifications generated by MSM.
/// </summary>
MSM = 0X00000010,
/// <summary>
/// Notifications generated by the security module.
/// </summary>
Security = 0X00000020,
/// <summary>
/// Notifications generated by independent hardware vendors (IHV).
/// </summary>
IHV = 0X00000040
/// <summary>
/// Defines the types of ACM (<see cref="WlanNotificationSource.ACM"/>) notifications.
/// </summary>
/// <remarks>
/// The enumeration identifiers correspond to the native <c>wlan_notification_acm_</c> identifiers.
/// On Windows XP SP2, only the <c>ConnectionComplete</c> and <c>Disconnected</c> notifications are available.
/// </remarks>
public enum WlanNotificationCodeAcm
AutoconfEnabled = 1,
AutoconfDisabled,
BackgroundScanEnabled,
BackgroundScanDisabled,
BssTypeChange,
PowerSettingChange,
ScanComplete,
ScanFail,
ConnectionStart,
ConnectionComplete,
ConnectionAttemptFail,
FilterListChange,
InterfaceArrival,
InterfaceRemoval,
ProfileChange,
ProfileNameChange,
ProfilesExhausted,
NetworkNotAvailable,
NetworkAvailable,
Disconnecting,
Disconnected,
AdhocNetworkStateChange
/// <summary>
/// Defines the types of an MSM (<see cref="WlanNotificationSource.MSM"/>) notifications.
/// </summary>
/// <remarks>
/// The enumeration identifiers correspond to the native <c>wlan_notification_msm_</c> identifiers.
/// </remarks>
public enum WlanNotificationCodeMsm
Associating = 1,
Associated,
Authenticating,
Connected,
RoamingStart,
RoamingEnd,
RadioStateChange,
SignalQualityChange,
Disassociating,
Disconnected,
PeerJoin,
PeerLeave,
AdapterRemoval,
AdapterOperationModeChange
/// <summary>
/// Contains information provided when registering for WLAN notifications.
/// </summary>
/// <remarks>
/// Corresponds to the native <c>WLAN_NOTIFICATION_DATA</c> type.
/// </remarks>
[StructLayout(LayoutKind.Sequential)]
public struct WlanNotificationData
/// <summary>
/// Specifies where the notification comes from.
/// </summary>
/// <remarks>
/// On Windows XP SP2, this field must be set to <see cref="WlanNotificationSource.None"/>, <see cref="WlanNotificationSource.All"/> or <see cref="WlanNotificationSource.ACM"/>.
/// </remarks>
public WlanNotificationSource notificationSource;
/// <summary>
/// Indicates the type of notification. The value of this field indicates what type of associated data will be present in <see cref="dataPtr"/>.
/// </summary>
public int notificationCode;
/// <summary>
/// Indicates which interface the notification is for.
/// </summary>
public Guid interfaceGuid;
/// <summary>
/// Specifies the size of <see cref="dataPtr"/>, in bytes.
/// </summary>
public int dataSize;
/// <summary>
/// Pointer to additional data needed for the notification, as indicated by <see cref="notificationCode"/>.
/// </summary>
public IntPtr dataPtr;
/// <summary>
/// Gets the notification code (in the correct enumeration type) according to the notification source.
/// </summary>
public object NotificationCode
get
switch (notificationSource)
case WlanNotificationSource.MSM:
return (WlanNotificationCodeMsm)notificationCode;
case WlanNotificationSource.ACM:
return (WlanNotificationCodeAcm)notificationCode;
default:
return notificationCode;
/// <summary>
/// Defines the callback function which accepts WLAN notifications.
/// </summary>
public delegate void WlanNotificationCallbackDelegate(ref WlanNotificationData notificationData, IntPtr context);
[DllImport("wlanapi.dll")]
public static extern int WlanRegisterNotification(
[In] IntPtr clientHandle,
[In] WlanNotificationSource notifSource,
[In] bool ignoreDuplicate,
[In] WlanNotificationCallbackDelegate funcCallback,
[In] IntPtr callbackContext,
[In] IntPtr reserved,
[Out] out WlanNotificationSource prevNotifSource);
/// <summary>
/// Defines flags which affect connecting to a WLAN network.
/// </summary>
[Flags]
public enum WlanConnectionFlags
/// <summary>
/// Connect to the destination network even if the destination is a hidden network. A hidden network does not broadcast its SSID. Do not use this flag if the destination network is an ad-hoc network.
/// <para>If the profile specified by <see cref="WlanConnectionParameters.profile"/> is not <c>null</c>, then this flag is ignored and the nonBroadcast profile element determines whether to connect to a hidden network.</para>
/// </summary>
HiddenNetwork = 0x00000001,
/// <summary>
/// Do not form an ad-hoc network. Only join an ad-hoc network if the network already exists. Do not use this flag if the destination network is an infrastructure network.
/// </summary>
AdhocJoinOnly = 0x00000002,
/// <summary>
/// Ignore the privacy bit when connecting to the network. Ignoring the privacy bit has the effect of ignoring whether packets are encryption and ignoring the method of encryption used. Only use this flag when connecting to an infrastructure network using a temporary profile.
/// </summary>
IgnorePrivacyBit = 0x00000004,
/// <summary>
/// Exempt EAPOL traffic from encryption and decryption. This flag is used when an application must send EAPOL traffic over an infrastructure network that uses Open authentication and WEP encryption. This flag must not be used to connect to networks that require 802.1X authentication. This flag is only valid when <see cref="WlanConnectionParameters.wlanConnectionMode"/> is set to <see cref="WlanConnectionMode.TemporaryProfile"/>. Avoid using this flag whenever possible.
/// </summary>
EapolPassthrough = 0x00000008
/// <summary>
/// Specifies the parameters used when using the <see cref="WlanConnect"/> function.
/// </summary>
/// <remarks>
/// Corresponds to the native <c>WLAN_CONNECTION_PARAMETERS</c> type.
/// </remarks>
[StructLayout(LayoutKind.Sequential)]
public struct WlanConnectionParameters
/// <summary>
/// Specifies the mode of connection.
/// </summary>
public WlanConnectionMode wlanConnectionMode;
/// <summary>
/// Specifies the profile being used for the connection.
/// The contents of the field depend on the <see cref="wlanConnectionMode"/>:
/// <list type="table">
/// <listheader>
/// <term>Value of <see cref="wlanConnectionMode"/></term>
/// <description>Contents of the profile string</description>
/// </listheader>
/// <item>
/// <term><see cref="WlanConnectionMode.Profile"/></term>
/// <description>The name of the profile used for the connection.</description>
/// </item>
/// <item>
/// <term><see cref="WlanConnectionMode.TemporaryProfile"/></term>
/// <description>The XML representation of the profile used for the connection.</description>
/// </item>
/// <item>
/// <term><see cref="WlanConnectionMode.DiscoverySecure"/>, <see cref="WlanConnectionMode.DiscoveryUnsecure"/> or <see cref="WlanConnectionMode.Auto"/></term>
/// <description><c>null</c></description>
/// </item>
/// </list>
/// </summary>
[MarshalAs(UnmanagedType.LPWStr)]
public string profile;
/// <summary>
/// Pointer to a <see cref="Dot11Ssid"/> structure that specifies the SSID of the network to connect to.
/// This field is optional. When set to <c>null</c>, all SSIDs in the profile will be tried.
/// This field must not be <c>null</c> if <see cref="wlanConnectionMode"/> is set to <see cref="WlanConnectionMode.DiscoverySecure"/> or <see cref="WlanConnectionMode.DiscoveryUnsecure"/>.
/// </summary>
public IntPtr dot11SsidPtr;
/// <summary>
/// Pointer to a <c>Dot11BssidList</c> structure that contains the list of basic service set (BSS) identifiers desired for the connection.
/// </summary>
/// <remarks>
/// On Windows XP SP2, must be set to <c>null</c>.
/// </remarks>
public IntPtr desiredBssidListPtr;
/// <summary>
/// A <see cref="Dot11BssType"/> value that indicates the BSS type of the network. If a profile is provided, this BSS type must be the same as the one in the profile.
/// </summary>
public Dot11BssType dot11BssType;
/// <summary>
/// Specifies ocnnection parameters.
/// </summary>
/// <remarks>
/// On Windows XP SP2, must be set to 0.
/// </remarks>
public WlanConnectionFlags flags;
/// <summary>
/// The connection state of an ad hoc network.
/// </summary>
public enum WlanAdhocNetworkState
/// <summary>
/// The ad hoc network has been formed, but no client or host is connected to the network.
/// </summary>
Formed = 0,
/// <summary>
/// A client or host is connected to the ad hoc network.
/// </summary>
Connected = 1
[DllImport("wlanapi.dll")]
public static extern int WlanConnect(
[In] IntPtr clientHandle,
[In, MarshalAs(UnmanagedType.LPStruct)] Guid interfaceGuid,
[In] ref WlanConnectionParameters connectionParameters,
IntPtr pReserved);
[DllImport("wlanapi.dll")]
public static extern int WlanDeleteProfile(
[In] IntPtr clientHandle,
[In, MarshalAs(UnmanagedType.LPStruct)] Guid interfaceGuid,
[In, MarshalAs(UnmanagedType.LPWStr)] string profileName,
IntPtr reservedPtr
[DllImport("wlanapi.dll")]
public static extern int WlanGetNetworkBssList(
[In] IntPtr clientHandle,
[In, MarshalAs(UnmanagedType.LPStruct)] Guid interfaceGuid,
[In] IntPtr dot11SsidInt,
[In] Dot11BssType dot11BssType,
[In] bool securityEnabled,
IntPtr reservedPtr,
[Out] out IntPtr wlanBssList
[StructLayout(LayoutKind.Sequential)]
internal struct WlanBssListHeader
internal uint totalSize;
internal uint numberOfItems;
/// <summary>
/// Contains information about a basic service set (BSS).
/// </summary>
[StructLayout(LayoutKind.Sequential)]
public struct WlanBssEntry
/// <summary>
/// Contains the SSID of the access point (AP) associated with the BSS.
/// </summary>
public Dot11Ssid dot11Ssid;
/// <summary>
/// The identifier of the PHY on which the AP is operating.
/// </summary>
public uint phyId;
/// <summary>
/// Contains the BSS identifier.
/// </summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 6)]
public byte[] dot11Bssid;
/// <summary>
/// Specifies whether the network is infrastructure or ad hoc.
/// </summary>
public Dot11BssType dot11BssType;
public Dot11PhyType dot11BssPhyType;
/// <summary>
/// The received signal strength in dBm.
/// </summary>
public int rssi;
/// <summary>
/// The link quality reported by the driver. Ranges from 0-100.
/// </summary>
public uint linkQuality;
/// <summary>
/// If 802.11d is not implemented, the network interface card (NIC) must set this field to TRUE. If 802.11d is implemented (but not necessarily enabled), the NIC must set this field to TRUE if the BSS operation complies with the configured regulatory domain.
/// </summary>
public bool inRegDomain;
/// <summary>
/// Contains the beacon interval value from the beacon packet or probe response.
/// </summary>
public ushort beaconPeriod;
/// <summary>
/// The timestamp from the beacon packet or probe response.
/// </summary>
public ulong timestamp;
/// <summary>
/// The host timestamp value when the beacon or probe response is received.
/// </summary>
public ulong hostTimestamp;
/// <summary>
/// The capability value from the beacon packet or probe response.
/// </summary>
public ushort capabilityInformation;
/// <summary>
/// The frequency of the center channel, in kHz.
/// </summary>
public uint chCenterFrequency;
/// <summary>
/// Contains the set of data transfer rates supported by the BSS.
/// </summary>
public WlanRateSet wlanRateSet;
/// <summary>
/// The offset of the information element (IE) data blob.
/// </summary>
public uint ieOffset;
/// <summary>
/// The size of the IE data blob, in bytes.
/// </summary>
public uint ieSize;
/// <summary>
/// Contains the set of supported data rates.
/// </summary>
[StructLayout(LayoutKind.Sequential)]
public struct WlanRateSet
/// <summary>
/// The length, in bytes, of <see cref="rateSet"/>.
/// </summary>
private uint rateSetLength;
/// <summary>
/// An array of supported data transfer rates.
/// </summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 126)]
private ushort[] rateSet;
/// <summary>
/// Gets an array of supported data transfer rates.
/// If the rate is a basic rate, the first bit of the rate value is set to 1.
/// A basic rate is the data transfer rate that all stations in a basic service set (BSS) can use to receive frames from the wireless medium.
/// </summary>
public ushort[] Rates
get
ushort[] rates = new ushort[rateSetLength / sizeof(ushort)];
Array.Copy(rateSet, rates, rates.Length);
return rates;
/// <summary>
/// Calculates the data transfer rate in mbit/s for a supported rate.
/// </summary>
/// <param name="rateIndex">The WLAN rate index (0-based).</param>
/// <returns>The data transfer rate in mbit/s.</returns>
/// <exception cref="ArgumentOutOfRangeException">Thrown if <param name="rateIndex"/> does not specify an existing rate.</exception>
public double GetRateInMbps(int rateIndex)
if ((rateIndex < 0) || (rateIndex > rateSet.Length))
throw new ArgumentOutOfRangeException("rateIndex");
return (rateSet[rateIndex] & 0x7FFF) * 0.5;
/// <summary>
/// Represents an error occuring during WLAN operations which indicate their failure via a <see cref="WlanReasonCode"/>.
/// </summary>
public class WlanException : Exception
private readonly WlanReasonCode reasonCode;
public WlanException(WlanReasonCode reasonCode)
this.reasonCode = reasonCode;
/// <summary>
/// Gets the WLAN reason code.
/// </summary>
/// <value>The WLAN reason code.</value>
public WlanReasonCode ReasonCode
get { return reasonCode; }
/// <summary>
/// Gets a message that describes the reason code.
/// </summary>
/// <value></value>
/// <returns>The error message that explains the reason for the exception, or an empty string("").</returns>
public override string Message
get
StringBuilder sb = new StringBuilder(1024);
return
WlanReasonCodeToString(reasonCode, sb.Capacity, sb, IntPtr.Zero) == 0 ?
sb.ToString() :
string.Empty;
// TODO: .NET-ify the WlanReasonCode enum (naming convention + docs).
/// <summary>
/// Defines reasons for a failure of a WLAN operation.
/// </summary>
/// <remarks>
/// Corresponds to the native reason code identifiers (<c>WLAN_REASON_CODE_xxx</c> identifiers).
/// </remarks>
public enum WlanReasonCode
Success = 0,
// general codes
UNKNOWN = 0x10000 + 1,
RANGE_SIZE = 0x10000,
BASE = 0x10000 + RANGE_SIZE,
// range for Auto Config
AC_BASE = 0x10000 + RANGE_SIZE,
AC_CONNECT_BASE = (AC_BASE + RANGE_SIZE / 2),
AC_END = (AC_BASE + RANGE_SIZE - 1),
// range for profile manager
// it has profile adding failure reason codes, but may not have
// connection reason codes
PROFILE_BASE = 0x10000 + (7 * RANGE_SIZE),
PROFILE_CONNECT_BASE = (PROFILE_BASE + RANGE_SIZE / 2),
PROFILE_END = (PROFILE_BASE + RANGE_SIZE - 1),
// range for MSM
MSM_BASE = 0x10000 + (2 * RANGE_SIZE),
MSM_CONNECT_BASE = (MSM_BASE + RANGE_SIZE / 2),
MSM_END = (MSM_BASE + RANGE_SIZE - 1),
// range for MSMSEC
MSMSEC_BASE = 0x10000 + (3 * RANGE_SIZE),
MSMSEC_CONNECT_BASE = (MSMSEC_BASE + RANGE_SIZE / 2),
MSMSEC_END = (MSMSEC_BASE + RANGE_SIZE - 1),
// AC network incompatible reason codes
NETWORK_NOT_COMPATIBLE = (AC_BASE + 1),
PROFILE_NOT_COMPATIBLE = (AC_BASE + 2),
// AC connect reason code
NO_AUTO_CONNECTION = (AC_CONNECT_BASE + 1),
NOT_VISIBLE = (AC_CONNECT_BASE + 2),
GP_DENIED = (AC_CONNECT_BASE + 3),
USER_DENIED = (AC_CONNECT_BASE + 4),
BSS_TYPE_NOT_ALLOWED = (AC_CONNECT_BASE + 5),
IN_FAILED_LIST = (AC_CONNECT_BASE + 6),
IN_BLOCKED_LIST = (AC_CONNECT_BASE + 7),
SSID_LIST_TOO_LONG = (AC_CONNECT_BASE + 8),
CONNECT_CALL_FAIL = (AC_CONNECT_BASE + 9),
SCAN_CALL_FAIL = (AC_CONNECT_BASE + 10),
NETWORK_NOT_AVAILABLE = (AC_CONNECT_BASE + 11),
PROFILE_CHANGED_OR_DELETED = (AC_CONNECT_BASE + 12),
KEY_MISMATCH = (AC_CONNECT_BASE + 13),
USER_NOT_RESPOND = (AC_CONNECT_BASE + 14),
// Profile validation errors
INVALID_PROFILE_SCHEMA = (PROFILE_BASE + 1),
PROFILE_MISSING = (PROFILE_BASE + 2),
INVALID_PROFILE_NAME = (PROFILE_BASE + 3),
INVALID_PROFILE_TYPE = (PROFILE_BASE + 4),
INVALID_PHY_TYPE = (PROFILE_BASE + 5),
MSM_SECURITY_MISSING = (PROFILE_BASE + 6),
IHV_SECURITY_NOT_SUPPORTED = (PROFILE_BASE + 7),
IHV_OUI_MISMATCH = (PROFILE_BASE + 8),
// IHV OUI not present but there is IHV settings in profile
IHV_OUI_MISSING = (PROFILE_BASE + 9),
// IHV OUI is present but there is no IHV settings in profile
IHV_SETTINGS_MISSING = (PROFILE_BASE + 10),
// both/conflict MSMSec and IHV security settings exist in profile
CONFLICT_SECURITY = (PROFILE_BASE + 11),
// no IHV or MSMSec security settings in profile
SECURITY_MISSING = (PROFILE_BASE + 12),
INVALID_BSS_TYPE = (PROFILE_BASE + 13),
INVALID_ADHOC_CONNECTION_MODE = (PROFILE_BASE + 14),
NON_BROADCAST_SET_FOR_ADHOC = (PROFILE_BASE + 15),
AUTO_SWITCH_SET_FOR_ADHOC = (PROFILE_BASE + 16),
AUTO_SWITCH_SET_FOR_MANUAL_CONNECTION = (PROFILE_BASE + 17),
IHV_SECURITY_ONEX_MISSING = (PROFILE_BASE + 18),
PROFILE_SSID_INVALID = (PROFILE_BASE + 19),
TOO_MANY_SSID = (PROFILE_BASE + 20),
// MSM network incompatible reasons
UNSUPPORTED_SECURITY_SET_BY_OS = (MSM_BASE + 1),
UNSUPPORTED_SECURITY_SET = (MSM_BASE + 2),
BSS_TYPE_UNMATCH = (MSM_BASE + 3),
PHY_TYPE_UNMATCH = (MSM_BASE + 4),
DATARATE_UNMATCH = (MSM_BASE + 5),
// MSM connection failure reasons, to be defined
// failure reason codes
// user called to disconnect
USER_CANCELLED = (MSM_CONNECT_BASE + 1),
// got disconnect while associating
ASSOCIATION_FAILURE = (MSM_CONNECT_BASE + 2),
// timeout for association
ASSOCIATION_TIMEOUT = (MSM_CONNECT_BASE + 3),
// pre-association security completed with failure
PRE_SECURITY_FAILURE = (MSM_CONNECT_BASE + 4),
// fail to start post-association security
START_SECURITY_FAILURE = (MSM_CONNECT_BASE + 5),
// post-association security completed with failure
SECURITY_FAILURE = (MSM_CONNECT_BASE + 6),
// security watchdog timeout
SECURITY_TIMEOUT = (MSM_CONNECT_BASE + 7),
// got disconnect from driver when roaming
ROAMING_FAILURE = (MSM_CONNECT_BASE + 8),
// failed to start security for roaming
ROAMING_SECURITY_FAILURE = (MSM_CONNECT_BASE + 9),
// failed to start security for adhoc-join
ADHOC_SECURITY_FAILURE = (MSM_CONNECT_BASE + 10),
// got disconnection from driver
DRIVER_DISCONNECTED = (MSM_CONNECT_BASE + 11),
// driver operation failed
DRIVER_OPERATION_FAILURE = (MSM_CONNECT_BASE + 12),
// Ihv service is not available
IHV_NOT_AVAILABLE = (MSM_CONNECT_BASE + 13),
// Response from ihv timed out
IHV_NOT_RESPONDING = (MSM_CONNECT_BASE + 14),
// Timed out waiting for driver to disconnect
DISCONNECT_TIMEOUT = (MSM_CONNECT_BASE + 15),
// An internal error prevented the operation from being completed.
INTERNAL_FAILURE = (MSM_CONNECT_BASE + 16),
// UI Request timed out.
UI_REQUEST_TIMEOUT = (MSM_CONNECT_BASE + 17),
// Roaming too often, post security is not completed after 5 times.
TOO_MANY_SECURITY_ATTEMPTS = (MSM_CONNECT_BASE + 18),
// MSMSEC reason codes
MSMSEC_MIN = MSMSEC_BASE,
// Key index specified is not valid
MSMSEC_PROFILE_INVALID_KEY_INDEX = (MSMSEC_BASE + 1),
// Key required, PSK present
MSMSEC_PROFILE_PSK_PRESENT = (MSMSEC_BASE + 2),
// Invalid key length
MSMSEC_PROFILE_KEY_LENGTH = (MSMSEC_BASE + 3),
// Invalid PSK length
MSMSEC_PROFILE_PSK_LENGTH = (MSMSEC_BASE + 4),
// No auth/cipher specified
MSMSEC_PROFILE_NO_AUTH_CIPHER_SPECIFIED = (MSMSEC_BASE + 5),
// Too many auth/cipher specified
MSMSEC_PROFILE_TOO_MANY_AUTH_CIPHER_SPECIFIED = (MSMSEC_BASE + 6),
// Profile contains duplicate auth/cipher
MSMSEC_PROFILE_DUPLICATE_AUTH_CIPHER = (MSMSEC_BASE + 7),
// Profile raw data is invalid (1x or key data)
MSMSEC_PROFILE_RAWDATA_INVALID = (MSMSEC_BASE + 8),
// Invalid auth/cipher combination
MSMSEC_PROFILE_INVALID_AUTH_CIPHER = (MSMSEC_BASE + 9),
// 802.1x disabled when it's required to be enabled
MSMSEC_PROFILE_ONEX_DISABLED = (MSMSEC_BASE + 10),
// 802.1x enabled when it's required to be disabled
MSMSEC_PROFILE_ONEX_ENABLED = (MSMSEC_BASE + 11),
MSMSEC_PROFILE_INVALID_PMKCACHE_MODE = (MSMSEC_BASE + 12),
MSMSEC_PROFILE_INVALID_PMKCACHE_SIZE = (MSMSEC_BASE + 13),
MSMSEC_PROFILE_INVALID_PMKCACHE_TTL = (MSMSEC_BASE + 14),
MSMSEC_PROFILE_INVALID_PREAUTH_MODE = (MSMSEC_BASE + 15),
MSMSEC_PROFILE_INVALID_PREAUTH_THROTTLE = (MSMSEC_BASE + 16),
// PreAuth enabled when PMK cache is disabled
MSMSEC_PROFILE_PREAUTH_ONLY_ENABLED = (MSMSEC_BASE + 17),
// Capability matching failed at network
MSMSEC_CAPABILITY_NETWORK = (MSMSEC_BASE + 18),
// Capability matching failed at NIC
MSMSEC_CAPABILITY_NIC = (MSMSEC_BASE + 19),
// Capability matching failed at profile
MSMSEC_CAPABILITY_PROFILE = (MSMSEC_BASE + 20),
// Network does not support specified discovery type
MSMSEC_CAPABILITY_DISCOVERY = (MSMSEC_BASE + 21),
// Passphrase contains invalid character
MSMSEC_PROFILE_PASSPHRASE_CHAR = (MSMSEC_BASE + 22),
// Key material contains invalid character
MSMSEC_PROFILE_KEYMATERIAL_CHAR = (MSMSEC_BASE + 23),
// Wrong key type specified for the auth/cipher pair
MSMSEC_PROFILE_WRONG_KEYTYPE = (MSMSEC_BASE + 24),
// "Mixed cell" suspected (AP not beaconing privacy, we have privacy enabled profile)
MSMSEC_MIXED_CELL = (MSMSEC_BASE + 25),
// Auth timers or number of timeouts in profile is incorrect
MSMSEC_PROFILE_AUTH_TIMERS_INVALID = (MSMSEC_BASE + 26),
// Group key update interval in profile is incorrect
MSMSEC_PROFILE_INVALID_GKEY_INTV = (MSMSEC_BASE + 27),
// "Transition network" suspected, trying legacy 802.11 security
MSMSEC_TRANSITION_NETWORK = (MSMSEC_BASE + 28),
// Key contains characters which do not map to ASCII
MSMSEC_PROFILE_KEY_UNMAPPED_CHAR = (MSMSEC_BASE + 29),
// Capability matching failed at profile (auth not found)
MSMSEC_CAPABILITY_PROFILE_AUTH = (MSMSEC_BASE + 30),
// Capability matching failed at profile (cipher not found)
MSMSEC_CAPABILITY_PROFILE_CIPHER = (MSMSEC_BASE + 31),
// Failed to queue UI request
MSMSEC_UI_REQUEST_FAILURE = (MSMSEC_CONNECT_BASE + 1),
// 802.1x authentication did not start within configured time
MSMSEC_AUTH_START_TIMEOUT = (MSMSEC_CONNECT_BASE + 2),
// 802.1x authentication did not complete within configured time
MSMSEC_AUTH_SUCCESS_TIMEOUT = (MSMSEC_CONNECT_BASE + 3),
// Dynamic key exchange did not start within configured time
MSMSEC_KEY_START_TIMEOUT = (MSMSEC_CONNECT_BASE + 4),
// Dynamic key exchange did not succeed within configured time
MSMSEC_KEY_SUCCESS_TIMEOUT = (MSMSEC_CONNECT_BASE + 5),
// Message 3 of 4 way handshake has no key data (RSN/WPA)
MSMSEC_M3_MISSING_KEY_DATA = (MSMSEC_CONNECT_BASE + 6),
// Message 3 of 4 way handshake has no IE (RSN/WPA)
MSMSEC_M3_MISSING_IE = (MSMSEC_CONNECT_BASE + 7),
// Message 3 of 4 way handshake has no Group Key (RSN)
MSMSEC_M3_MISSING_GRP_KEY = (MSMSEC_CONNECT_BASE + 8),
// Matching security capabilities of IE in M3 failed (RSN/WPA)
MSMSEC_PR_IE_MATCHING = (MSMSEC_CONNECT_BASE + 9),
// Matching security capabilities of Secondary IE in M3 failed (RSN)
MSMSEC_SEC_IE_MATCHING = (MSMSEC_CONNECT_BASE + 10),
// Required a pairwise key but AP configured only group keys
MSMSEC_NO_PAIRWISE_KEY = (MSMSEC_CONNECT_BASE + 11),
// Message 1 of group key handshake has no key data (RSN/WPA)
MSMSEC_G1_MISSING_KEY_DATA = (MSMSEC_CONNECT_BASE + 12),
// Message 1 of group key handshake has no group key
MSMSEC_G1_MISSING_GRP_KEY = (MSMSEC_CONNECT_BASE + 13),
// AP reset secure bit after connection was secured
MSMSEC_PEER_INDICATED_INSECURE = (MSMSEC_CONNECT_BASE + 14),
// 802.1x indicated there is no authenticator but profile requires 802.1x
MSMSEC_NO_AUTHENTICATOR = (MSMSEC_CONNECT_BASE + 15),
// Plumbing settings to NIC failed
MSMSEC_NIC_FAILURE = (MSMSEC_CONNECT_BASE + 16),
// Operation was cancelled by caller
MSMSEC_CANCELLED = (MSMSEC_CONNECT_BASE + 17),
// Key was in incorrect format
MSMSEC_KEY_FORMAT = (MSMSEC_CONNECT_BASE + 18),
// Security downgrade detected
MSMSEC_DOWNGRADE_DETECTED = (MSMSEC_CONNECT_BASE + 19),
// PSK mismatch suspected
MSMSEC_PSK_MISMATCH_SUSPECTED = (MSMSEC_CONNECT_BASE + 20),
// Forced failure because connection method was not secure
MSMSEC_FORCED_FAILURE = (MSMSEC_CONNECT_BASE + 21),
// ui request couldn't be queued or user pressed cancel
MSMSEC_SECURITY_UI_FAILURE = (MSMSEC_CONNECT_BASE + 22),
MSMSEC_MAX = MSMSEC_END
/// <summary>
/// Contains information about connection related notifications.
/// </summary>
/// <remarks>
/// Corresponds to the native <c>WLAN_CONNECTION_NOTIFICATION_DATA</c> type.
/// </remarks>
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct WlanConnectionNotificationData
/// <remarks>
/// On Windows XP SP 2, only <see cref="WlanConnectionMode.Profile"/> is supported.
/// </remarks>
public WlanConnectionMode wlanConnectionMode;
/// <summary>
/// The name of the profile used for the connection. Profile names are case-sensitive.
/// </summary>
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
public string profileName;
/// <summary>
/// The SSID of the association.
/// </summary>
public Dot11Ssid dot11Ssid;
/// <summary>
/// The BSS network type.
/// </summary>
public Dot11BssType dot11BssType;
/// <summary>
/// Indicates whether security is enabled for this connection.
/// </summary>
public bool securityEnabled;
/// <summary>
/// Indicates the reason for an operation failure.
/// This field has a value of <see cref="WlanReasonCode.Success"/> for all connection-related notifications except <see cref="WlanNotificationCodeAcm.ConnectionComplete"/>.
/// If the connection fails, this field indicates the reason for the failure.
/// </summary>
public WlanReasonCode wlanReasonCode;
/// <summary>
/// This field contains the XML presentation of the profile used for discovery, if the connection succeeds.
/// </summary>
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 1)]
public string profileXml;
/// <summary>
/// Indicates the state of an interface.
/// </summary>
/// <remarks>
/// Corresponds to the native <c>WLAN_INTERFACE_STATE</c> type.
/// </remarks>
public enum WlanInterfaceState
/// <summary>
/// The interface is not ready to operate.
/// </summary>
NotReady = 0,
/// <summary>
/// The interface is connected to a network.
/// </summary>
Connected = 1,
/// <summary>
/// The interface is the first node in an ad hoc network. No peer has connected.
/// </summary>
AdHocNetworkFormed = 2,
/// <summary>
/// The interface is disconnecting from the current network.
/// </summary>
Disconnecting = 3,
/// <summary>
/// The interface is not connected to any network.
/// </summary>
Disconnected = 4,
/// <summary>
/// The interface is attempting to associate with a network.
/// </summary>
Associating = 5,
/// <summary>
/// Auto configuration is discovering the settings for the network.
/// </summary>
Discovering = 6,
/// <summary>
/// The interface is in the process of authenticating.
/// </summary>
Authenticating = 7
/// <summary>
/// Contains the SSID of an interface.
/// </summary>
public struct Dot11Ssid
/// <summary>
/// The length, in bytes, of the <see cref="SSID"/> array.
/// </summary>
public uint SSIDLength;
/// <summary>
/// The SSID.
/// </summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
public byte[] SSID;
/// <summary>
/// Defines an 802.11 PHY and media type.
/// </summary>
/// <remarks>
/// Corresponds to the native <c>DOT11_PHY_TYPE</c> type.
/// </remarks>
public enum Dot11PhyType : uint
/// <summary>
/// Specifies an unknown or uninitialized PHY type.
/// </summary>
Unknown = 0,
/// <summary>
/// Specifies any PHY type.
/// </summary>
Any = Unknown,
/// <summary>
/// Specifies a frequency-hopping spread-spectrum (FHSS) PHY. Bluetooth devices can use FHSS or an adaptation of FHSS.
/// </summary>
FHSS = 1,
/// <summary>
/// Specifies a direct sequence spread spectrum (DSSS) PHY.
/// </summary>
DSSS = 2,
/// <summary>
/// Specifies an infrared (IR) baseband PHY.
/// </summary>
IrBaseband = 3,
/// <summary>
/// Specifies an orthogonal frequency division multiplexing (OFDM) PHY. 802.11a devices can use OFDM.
/// </summary>
OFDM = 4,
/// <summary>
/// Specifies a high-rate DSSS (HRDSSS) PHY.
/// </summary>
HRDSSS = 5,
/// <summary>
/// Specifies an extended rate PHY (ERP). 802.11g devices can use ERP.
/// </summary>
ERP = 6,
/// <summary>
/// Specifies the start of the range that is used to define PHY types that are developed by an independent hardware vendor (IHV).
/// </summary>
IHV_Start = 0x80000000,
/// <summary>
/// Specifies the end of the range that is used to define PHY types that are developed by an independent hardware vendor (IHV).
/// </summary>
IHV_End = 0xffffffff

How can I quickly sample data from 200 channels using DAQmx?

Hello,
I am trying to sample thermocouple data using a SCXI 1000 chassis with two SCXI 1100 modules and one SCXI 1102B, all of which have a 1300 isothermal terminal block. The computer I am using has a PCI-6052E DAQ card and 1 GB of RAM. I will eventually need to upgrade to a SCXI 1001 chassis with enough modules to collect about 175-200 different signals. The problem is I am testing with just the 96 channels I have available and the program runs super slow, with the maximum sample rate only .026 Hz. Currently I have all the channels being read by one DAQmx VI. I've looked through the example programs and tutorials, but nothing there deals with large numbers of channels. Is there a way to improve the sample rate to around 1 Hz with so many channels?
Thanks in advance

Check the filter configuration for your SCXI-1100. The product page says that if you set the filter for 4Hz, you'll only get 3 Samples/second. The slowest module in the chassis determines the sample rate. If one of your modules is configured that way, you'll get a maximum rate of approximately 3 hz / 96 channels = 0.031 hz/channel, which is pretty close to what you've reported. The filter is set by a jumper on the module, see the manual under "filter selection."
You might want to look at "Determining Maximum Scan Rate for Multiple SCXI Modules" as well.

How can i get the list of all users present in the LDAP

Hi Experts,
How can i get the list of all users present in the LDAP ?
Is there any API or function Code to get all user list??
Please help me out!!!
Help will be rewarded

Well it will depend on exactly where your UME configuration points to in the LDAP tree but yes, it is possible to get all users. Something like the following should do it:
import com.sap.security.api.*;
import com.sapportals.portal.prt.component.*;
IUserFactory iuf;
ISearchResult isr;
IUser user
String userid;
iuf = UMFactory.getUserFactory();
isr = iuf.getUniqueIDs();
you will need to iterate the ISearchResult object but you can get IUser objects by
userid = (String)isr.next();
user = iuf.getUser(userid);
then you can imanipulate / identify / or whatever you need with the user object
Haydn

How can I get the list of drivers without getting popup message?

Every time the application gets to this line:
File[] roots = File.listRoots();
I get message box: "There is no disk in the drive.
Please insert disk into drive A:"
How can I get the list of drivers without getting
this message popup?

I don't have a solution to this problem. However, it does occur and it is annoying. I am testing our application on 4 client machines. On three of them, it NEVER asks for the floppy disk. On the remaining one, it ALWAYS asks. I have looked on the computers and cannot find any configuration differences (in fact, these machines are kept in a "closed environment", and therefore, they are configured, by default, exactly the same).
Does anyone have any thoughts?

How can I get a list of apps which are supported on ipod touch model ma623zo?

How can I get a list of apps which are supported on ipod touch model ma623zo?
It's about 6 years old I think.
I have put the latest IOS on there (currently 3.1.3 (7E18)).
I download apps from the app store but they often fail to launch. I assume they're incompatible.
Is there a way to check which apps will work and which won't before I buy them?
Thanks!

I have no idea how my reply could be "misleading". I stated the exact situation: there are millions of apps in the iTunes Store, and providing a comprehensive, accurate list of which apps support which version(s) of iOS would be highly impractical. You can perhaps help with your search by going to AppShopper:
http://appshopper.com/search/?search=iOS+3
That will give you at least some starting points, but AppShopper is neither comprehensive nor completely accurate. I've found a number of apps listed there over the time the site has existed that either are no longer offered or which have been updated beyond the iOS version indicated. But it might help.
Regards.

How do i get a list of all the apps i have purchased this year

how do i get a list of all the apps have purchased this year and how much each app was

Check your iTunes purchase history (click your email address in the upper right corner in the iTunes App Store-> log in -> click Purchase History). This gives you a comprehensive list of apps you've purchased.
 Cheers, Tom

How can I get a list of database names from environment

Hi,
How can I get a list of database names from environment.
I had found a method in JE API Docs named Environment.getDatabaseNames(), and i couldn't found the same method in Berkeley DB.
I use java interface, is it supported?
Thanks.

Hello,
I don't know if it would work for you, but have you checked the db_archive utility at:
http://download.oracle.com/docs/cd/E17076_01/html/api_reference/C/db_archive.html
Check the -s option.
Thanks,
Sandra

How do I get a list of current activations for my license?

We have a company license which we use for multiple installs. Over time, we have replaced and/or reimaged PCs and reinstalled and activated the software. We just started getting a warning that license have been exceeded. We were unaware it needed to be deactivated on decommissioned machines. How do we get a list of activated machines and reconcile that with the machines which have had it removed or been reimaged and activated again?

Hi,
There is not tool available for external use to keep check of your activations.
You have to manually keep track or you may contact customer service to check activation count on product.
Regards,
Ajlan Huda.

How do i get a list of all Roles defubed under a particular OrganizationalUnit? How can i use LDAPConnection.search method for this?

Sorry for the typographical mistake.
Please read the question as:"How do i get a list of all Roles defined under a particular OrganizationalUnit? How can i use LDAPConnection.search method for this?"

HT1420 how can I get a list of the computers that are currently authorized?

I need to authorize my home computer after switching from PC to Mac. How can I get a list of which devices are currently authorized?

There is no list.

Hi ,How can I get a list of all laptops or users with folder direction enabled or offline files enabled, be it sccm or poerwshell . i have struggled for a week.

Hi ,how can I get a list of all laptops or users with folder direction enabled or offline files enabled, be it sccm
or poerwshell . i have struggled for a week
tchocr

Hi,
There is no such PowerShell command can achiev this. Maybe you can use a script to get the user name with folder redirection enabled. However, I am not familiar with writing script, and it would be better for you to ask in script forum below for professional
assistance:
http://social.technet.microsoft.com/Forums/en-US/home?forum=ITCG&filter=alltypes&sort=lastpostdesc
Best Regards,
Mandy
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