IUriToStreamResolver.UriToStreamAsync - InvalidCastException in TaskToAsyncOperationWithProgress

Hi,
I'm developping a book reader application and to display EPUb I'm using a webview with a IUriToStreamResolver to get the resources (from disk or from server). My business code return Stream object (MemoryStream) and I'm using "AsRandomAccessStream"
extension method to get a WinRt Stream (also tried with "AsInputStream").
The issue is that I cannot return the result of these methods to the webview due to an InvalidCastException. The exception is not raised by the webview but by the "TaskToAsyncOperationWithProgressAdapter" in "OnCompleted" method.
If I'm creating an "InMemoryRandomAccessStream" an copy the bytes in it's working. Copying mutiple times the same data (from server to stream/from stream to WinRt Stream/from WinRt stream to webview) is using too much memory and CPU for a mobile
application.
Is it a known issue? Did anyone have a fix for that?Thanks,
Thanks,
Max.

Hi,
After multiple try I found the reason but cannot fix it.
It seems that if the UriToStreamAsync method of IUriToStreamResolver doesn't return a WinRT implement of "IInputStream" ("InMemoryRandomAccessStream" or "FileRandomAccessStream") the webview (or
the component that use the "IUriToStreamResolver") call the "ReadAsync" method.
This method return a "IAsyncOperationWithProgress<IBuffer, uint>". But there is a bug when setting the "Completed" handler on this instance. The type needed by the "Completed" property is "AsyncOperationWithProgressCompleteHandler<IBuffer,
uint>". BUT the type passed to this property is in fact a "AsyncOperationCompleteHandler<IInputStream>" which indeed is not correct and throw a "InvalidCastException". I tried to create my own implementation of "IAsyncOperationWithProgress"
to handle this specific case but a "AccessViolationException" is thrown when called the "Complete" delegate.
Please note that this issue doesn't appears with "InMemoryRandomAccessStream" or "FileRandomAccessStream". I assume these two classes follow a more optimized way.
I really need to use a custom IRandomAccessStream to handle encryption of the data that I need to display.
Thanks for the help.
Max.

Similar Messages

InvalidCastException was unhandled

Hi,
working with some in-house developed software, and after installing, and then uninstalling, a patch for VS2010, I suddenly get an "InvalidCastException was unhandled"
The software is built on CodedUI, and the error appears when running the line
bw = BrowserWindow.Launch(data);
The broswerwindow is opened, and the error is thrown before the next line is interpreted.
The error text reads:
Unable to cast COM object of type 'Microsoft.VisualStudio.TestTools.UITest.Extension.IE.Communication.Interop.IECommunicatorClass' to interface type 'Microsoft.VisualStudio.TestTools.UITest.Extension.IE.Communication.Interop.IIECommunicator'. This operation
failed because the QueryInterface call on the COM component for the interface with IID '{95D738E9-E1F4-45EB-9DFF-E39671AF0CB7}' failed due to the following error: Library not registered. (Exception from HRESULT: 0x8002801D (TYPE_E_LIBNOTREGISTERED)).
Anyone have an idea?

Hi HakonRamanujan,
>>Get the same message when trying to record steps with CodedUI, when trying to access some controls on web pages.
Do you mean that you still get this issue if you record a simple coded UI test? I mean that whether all coded UI tests have the same issue, maybe you could install the VS2010 sp1. Test it again.
Please also make sure that the Coded UI test supports these controls.
https://msdn.microsoft.com/en-us/library/dd380742(v=vs.100).aspx
In addition, whether you recorded the test in the latest version like VS2013 before? Maybe you could test it in VS2013 version.
Best Regards,
Jack
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Unexpected InvalidCastException With DataTemplate

I have the following Xaml for which I set the ItemsSource property as follows:
<ItemsControl x:Name="itmRecipients" Grid.Column="0" Grid.Row="2" ScrollViewer.VerticalScrollBarVisibility="Auto" ScrollViewer.VerticalScrollMode="Auto" ScrollViewer.BringIntoViewOnFocusChange="True">
<ItemsControl.ItemsPanel><ItemsPanelTemplate><StackPanel/></ItemsPanelTemplate></ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate><DataTemplate><RadioButton Style="{StaticResource BasicToggleButton}" GroupName="Recipients" Checked="Recipient_Checked" Content="{Binding Name}" Tag="{Binding Index}"/></DataTemplate></ItemsControl.ItemTemplate>
</ItemsControl>
Me.itmRecipients.ItemsSource = Me.Recipients.Select(Function(r, i) New With {.Name = r.Name, .Index = i})
As you can see, the DataTemplate is just a RadioButton which uses the Name and Index properties of the bound items. The bound items are an anonymous type with the properties Name and Index. But when I run the code, I get the following error:
A first chance exception of type 'System.InvalidCastException' occurred in GiftTrackerUnivAppTest_Windows.exe
After looking at App.g.i.vb, I found the following in unhandledExceptionArgs:
"System.InvalidCastException: Unable to cast object of type 'VB$AnonymousType_0`2[System.String,System.Int32]' to type 'Windows.UI.Xaml.Controls.RadioButton'.
at GiftTrackerUnivAppTest_Windows.MainPage.MainPage_Loaded(Object sender, RoutedEventArgs e)"
'VB$AnonymousType_0`2[System.String,System.Int32]' is obviously my anonymous type with the Name and Index properties. Why is it trying to convert my anonymous type to a RadioButton instead of applying it to the DataTemplate? Thanks.
Nathan Sokalski [email protected] http://www.nathansokalski.com/

Hi Nathan,
I used the following code snippet to test in store app, but I worked. I could not reproduce your problem. Can you post a repro project or post more information to explain your scenario?
Private Sub Page_Loaded(sender As Object, e As RoutedEventArgs)
list = New System.Collections.ObjectModel.ObservableCollection(Of Employee)()
Dim rnd As New Random()
For i As Integer = 0 To 99
Dim ee As New Employee()
ee.Name = "herro" & i.ToString()
ee.Index = rnd.Next(0, 101)
list.Add(ee)
Next
itmRecipients.ItemsSource = list.Where(Function(w) w.Index > 10).[Select](Function(s) New With { _
Key .Name = s.Name, _
Key .Index = s.Index _
End Sub
Regards,
We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time. Thanks for helping make community forums a great place. Click HERE to participate
the survey.

CrystalReports 'System.InvalidCastException' occurred

Hi Team, I'm getting the below error. Can some one please assist me on this? I'm using Windows 2012 R2 server and CrystalReport Runtime 13.0.x version installed on the server. Application built on Any CPU using VisualStudio 2010 Error Message: HandlingInstanceID: c68a0e37-5eb5-4cb5-9587-6d6030b79b48 An exception of type 'System.InvalidCastException' occurred and was caught. --------------------------------------------------------------------------- 01/13/2015 16:26:11 Type : System.InvalidCastException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 Message : Unable to cast object of type 'FileStreamDeleteOnClose' to type 'System.IO.MemoryStream'.

Hi Don,
I gave this a try and I got the same results I was getting before the change the ExportToStream is returning a object of type FileStreamDeleteOnclose instead of an object of type IO.Stream.
You have what I had before already, but here is what I changed it to in order to do what the developer asked:
Protected Friend Function GetPDF(ByVal genColsolidatedPDF As String) As IO.
Stream
Dim exportStream As System.IO.Stream = GenerateReport(genColsolidatedPDF).ExportToStream(ExportFormatType
.PortableDocFormat)
Using fileStream As New IO.FileStream(expPath, System.IO.FileMode.Create, System.IO.FileAccess
.Write)exportStream.CopyTo(fileStream)fileStream.Dispose()
exportStream.Close()
Return
exportStream
End Function
Private Function GenerateReport(ByVal genConsolPDF As String) As
ReportDocument
Dim connInfo As New
ConnectionInfo
Dim databaseLoginInfo As New
TableLogOnInfos
Dim reportDoc As New
ReportDocument
Dim tableSet As
Tables
'reportDoc = New ActiveSignatures
reportDoc.Load(rptPath)
reportDoc.SetParameterValue(DAL.ParmName.MRId, BLL.SessionData
.EssInfo.MRID)reportDoc.SetParameterValue(cCONSOLIDATEPDF, genConsolPDF)
connInfo.ServerName = [Lib].ApplicationData.db_Server
connInfo.DatabaseName = [Lib].ApplicationData.db_Name
connInfo.UserID = [Lib].ApplicationData.db_UserId
connInfo.Password = [Lib].ApplicationData.db_Password
tableSet = reportDoc.Database.Tables
For Each singleTable As Table In
tableSet
Dim singleTableLogoninfo As TableLogOnInfo
= singleTable.LogOnInfo
singleTableLogoninfo.ConnectionInfo = connInfo
singleTable.ApplyLogOnInfo(singleTableLogoninfo)
Next
Return reportDoc
End Function
It seemed like the developer maybe wanted more information about how the report is then used, so this is what happens. The report is then supposed to be returned as type IO.Stream and then it is to be converted to an IO.MemoryStream:
Dim sourceFiles(sourceSize as MemoryStream)
sourceFiles(i) = New MemoryStream(GetByteArray(CType(parameters.SignaturePage, IO.MemoryStream)))
parameters.SignaturePage is the crytal report that is being returned, that is what needs to be IO.Stream, but is coming back as FileStreamDeleteOnclose.
When the application then tries to convert from FileStreamDeleteOnClose to IO.MemoryStream, that is where the error occurrs: Exception: System.InvalidCastException: Unable to cast object of type 'FileStreamDeleteOnClose' to type 'System.IO.MemoryStream'. But this is only occurring because I am getting back the incorrect object type from the ExportToStream call.
Before I upgraded to SP 13 this worked fine, and has been working fine for years. It is after SP13 that this ExportToStream stopped giving me the IO.Stream object type and is now returning the FileStreamDeleteOnClose.
I hope that helps!
Thank you,
Leah

System.InvalidCastException at DataReader.GetInt64 or DataReader.GetInt16

Hallo,
we have an application which gets data from a view in an Oracle 9.2.0.7 database:
SELECT CAST (1138923 AS NUMBER (10)) AS object_id,
CAST (MIN.universal_time AS NUMBER (10)) AS universal_time,
MIN.local_time AS local_time, 0 AS mod_time, 0 AS COUNT,
CAST ((MIN.VALUE + MAX.VALUE) / 2 AS NUMBER (38, 19)) AS VALUE,
CAST (9 AS NUMBER (2)) AS flag
FROM TimeSeries
WHERE object_id = 1138923
We access this view with a ODP.NET 9.2.0.7 provider using a DataReader.
On our development machine and at the most customers the acces works very fine !!
But only at one customer we get an InvalidCastException iif we use the GetInt64 or GetInt16 DataReader method.
While debugging we recognized that the datareader method returns a decimal, although it is casted to number 10
We don't want to use a GetDecimal or CAST command in the .NET code, the view or table should return a double !
Is this a known behaviour ?
Many thanks in advance and
Best regards
George
Edited by: hakomdba on 23.02.2009 11:04

How did you go about recreating the Managed Metadata Service Application? Did you point the service application at the existing database when recreating it or did you create it with a 'dummy' database and use the following PowerShell to point it at
the old database?
$app = Get-SPServiceApplication -Name "<ServiceApplicationName>"
Set-SPMetadataServiceApplication -Identity $app -DatabaseName "<DbName>"
Also, I have seen scenarios where the MMD service application db is completely corrupt and the only way to retain data is through the commands specified here:
http://social.technet.microsoft.com/wiki/contents/articles/5233.sharepoint-2010-import-export-termset.aspx
Regards,
Andrew J Billings
Portal Systems Engineer//MCSA,MCSE
Blog:
http://www.andrewjbillings.com
Twitter: LinkedIn:

AppFabric Installation Error System.InvalidCastException

Hi everyone,
I tried to install AppFabric on Windows 7 Enterprise (Service Pack1) 64-bit operating system computer. For development and testing reasons.
I tried some popular workarounds for appfabric including environment variable changes and others, none of them solved my problem. Can you help me please?
When i double click WindowsServerAppFabricSetup_x64.exe, i got System.InvalidCastException which is detailed below.
Unable to cast COM object of type 'CbsSession' to interface type 'ICbsSession'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{75207391-23F2-4396-85F0-8FDB879ED0ED}' failed due to the following error:
Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).
Description:
Stopped working
Problem signature:
Problem Event Name: CLR20r3
Problem Signature 01: setup.exe
Problem Signature 02: 1.0.0.0
Problem Signature 03: 4ed52225
Problem Signature 04: Setup
Problem Signature 05: 1.0.0.0
Problem Signature 06: 4ed52225
Problem Signature 07: 1fb
Problem Signature 08: 6
Problem Signature 09: System.InvalidCastException
OS Version: 6.1.7601.2.1.0.256.4
Locale ID: 1055

Hello yilmazuur,
It looks like your post is not related to Outlook at all. That is why I would recommend asking such questions in the
AppFabric Service and Workflow Management forum instead. There you will get the most qualified answers.

OracleDataReader GetInt32 throws invalidcastexception

The example below shows an example of calling the OracleDataReader GetInt32 accessor where field 0 is defined as a NUMBER type in the db. This throws an InvalidCastException with the message "specified cast is invald"
OracleDataReader dr = cmd.ExecuteReader();
dr.Read();
int id = dr.GetInt32(0);
dr.Close();
The documentation specifies that this accessor returns an int from a NUMBER column.
I can work around this using a GetDecimal and casting to an int.
Will this bug be fixed in the next release and when is the next release.

Chris,
I have tried the code you have posted with a table created as follows:
create table int32_tab(col1 Number(9));
insert into int32_tab values(999999999);
and do not see the InvalidCastException. Could you please provide me with more details of your test case.
-Naveen

DeltaSynchronization Error 29181 InvalidCastException

I started getting errors on the DeltaSynchronization but have not been able to determine the cause or who to fix it.
I have already increased the timeout values in ConfigService.config on all the management servers, although i didn't think this would resolve the issue.
Any help or suggestions would be appreciated.
Below is the full error message:
OpsMgr Management Configuration Service failed to execute 'DeltaSynchronization' engine work item due to the following exception
Microsoft.EnterpriseManagement.ManagementConfiguration.DataAccessLayer.DataAccessException: Data access operation failed
at Microsoft.EnterpriseManagement.ManagementConfiguration.DataAccessLayer.DataAccessOperation.ExecuteSynchronously(Int32 timeoutSeconds, WaitHandle stopWaitHandle)
at Microsoft.EnterpriseManagement.ManagementConfiguration.CmdbOperations.CmdbDataProvider.GetConfigurationDelta(String watermark)
at Microsoft.EnterpriseManagement.ManagementConfiguration.Engine.TracingConfigurationDataProvider.GetConfigurationDelta(String watermark)
at Microsoft.EnterpriseManagement.ManagementConfiguration.Engine.DeltaSynchronizationWorkItem.TransferData(String watermark)
at Microsoft.EnterpriseManagement.ManagementConfiguration.Engine.DeltaSynchronizationWorkItem.ExecuteSharedWorkItem()
at Microsoft.EnterpriseManagement.ManagementConfiguration.Interop.SharedWorkItem.ExecuteWorkItem()
at Microsoft.EnterpriseManagement.ManagementConfiguration.Interop.ConfigServiceEngineWorkItem.Execute()
System.InvalidCastException: Specified cast is not valid.
at Microsoft.EnterpriseManagement.ManagementConfiguration.CmdbOperations.EntityChangeDeltaReadOperation.ReadManagedEntitiesProperties(SqlDataReader reader)
at Microsoft.EnterpriseManagement.ManagementConfiguration.CmdbOperations.EntityChangeDeltaReadOperation.ReadData(SqlDataReader reader)
at Microsoft.EnterpriseManagement.ManagementConfiguration.DataAccessLayer.ReaderSqlCommandOperation.SqlCommandCompleted(IAsyncResult asyncResult)

Figured it out for my issue. A clustered server created additional windows computer objects with IsVirtualNode set to True, representing the cluster. It's an annoyance, but you need to know how to weed these out if your discovery will be run against Microsoft.Windows.Server.Computer
and where your SCOM box is monitoring clustered servers.
My discovery script tries to push the discovered object down to the agent. Which is impossible for these weird virtual computer objects.
    $global:discoveryData.AddInstance($instance)
    # force the seed down the the agent
    # To force the RMS to re-assign the local agent as the managing agent for the discovered physical server object ($instance)
    # we have to get a reference to the local health service class and then create a SPECIAL SECRET relationship :)
    $oHealthServiceInstance = $global:discoveryData.CreateClassInstance("$MPElement[Name='SC!Microsoft.SystemCenter.HealthService']$")
    $oHealthServiceInstance.AddProperty("$MPElement[Name='Windows!Microsoft.Windows.Computer']/PrincipalName$", $PrincipalName)
    $global:discoveryData.AddInstance($oHealthServiceInstance)
    $oHsCnRel = $global:discoveryData.CreateRelationshipInstance("$MPElement[Name='SC!Microsoft.SystemCenter.HealthServiceShouldManageEntity']$")
    $oHsCnRel.Source = $oHealthServiceInstance
    $oHsCnRel.Target = $instance
    $global:discoveryData.AddInstance($oHsCnRel)
It works find if all your servers are unclustered, but if they're clustered you can't push the object down to the agent, there isn't one. This seems to be the culprit of the call stack described at the beginning of this discussion.
So... to fix it (ignore the offending objects) ...
If you're doing a filtered registry discovery, add this to your filter expression...
      <Expression>
        <SimpleExpression>
          <ValueExpression>
            <Value Type="String">IsVirtualNode:$Target/Property[Type="Windows!Microsoft.Windows.Server.Computer"]/IsVirtualNode$</Value>
          </ValueExpression>
          <Operator>NotEqual</Operator>
          <ValueExpression>
            <Value Type="String">IsVirtualNode:True</Value>
          </ValueExpression>
        </SimpleExpression>
      </Expression>
The SCOM object returns NULL when the property is not True, so this is the best way to check (by prepending $Target with some token text like 'IsVirtualNode:')   The resulting generated text will be with 'IsVirtualNode:True' for the target objects
we want to ignore, and 'IsVirtualNode:' for the target objects we want to process (these are the non-virtual, real physical computers that you thought you were getting all along). If you do not prepend the $Target... with 'IsVirtualNode:' I've
seen SCOM not even process this with the expression evaluation, presumably because it's trying to compare a null instead of a generated string (which is what you get with my hack).
Ok, enough of that... If you're trying to do discovery with a script, you can do something like this, where you return early with an empty discovery payload otherwise proceed with normal discovery:
    $isvirtualnode = "IsVirtualNode:$Target/Property[Type="Windows!Microsoft.Windows.Server.Computer"]/IsVirtualNode$"
    if ($isvirtualnode -eq "IsVirtualNode:True")
        #Write-ErrorInfo "Tried to discover Active/Idle for $PrincipalName (IsVirtualNode: $isvirtualnode)"
        #return the empty payload back to SCOM
        $discoveryData
        return
    else
        #Write-Info "Tried to discover Active/Idle for $PrincipalName (IsVirtualNode: $isvirtualnode)"
    # proceed with normal discovery
Hope this helps someone out there. I spent a lot of time learning about how SCOM deals with clusters a few years back. It was quite a painful experience trying to develop a cluster-aware SCOM pack using the minimal white papers that were available.
This piece of info that I'm sharing took some digging as it wasn't documented well in the white papers.

Bitmap loading generates InvalidCastException

Hello all,
i'm on compact framework 2 (CLR Version: 2.0.7045.0), and i keep getting these first chance exceptions (disabled breaking on them) in my code when trying to load a bitmap from a file. However, the bitmap is created correctly.
I've seen it happen with both jpg and png, others i haven't tried yet.
Bitmap tmp;
tmp = new Bitmap(BackgroundImage);
or silimar ones all generate this.
A first chance exception of type 'System.InvalidCastException' occurred in System.Drawing.dll
The error is happening here:
System.Drawing.dll!Microsoft.AGL.Common.MISC.CreateMemoryStream(System.IO.Stream stream = {System.IO.FileStream}) + 0xb bytes
and detailed one is:
System.InvalidCastException occurred
Message="InvalidCastException"
StackTrace:
    at Microsoft.AGL.Common.MISC.CreateMemoryStream()
    at System.Drawing.Bitmap..ctor()
    at OctopusCF.UI.xml.SkinConfig.GetBackgroundImage()
    at Octopuscf.Program.Main()
Anyone have any idea where they come from? As the bitmap gets created correctly, could it be that something is happening internally in the system.drawing dll, from which it can recover and still load the bitmap?
Thanks,
Kristof

Yes. You should cache bitmaps you're going to reuse not just because of exception but mostly because it takes a long time to decompress bitmaps. Exception take may be 1-2% of that time. Watch out for available memory though, don’t cache too much.

Managed ODP: InvalidCastException when returning large number

I get an InvalidCastException "Specified cast is not valid" when trying to get a value bigger than Decimal.MaxValue as a scalar result from a select.
From the stack trace and inspection of the Oracle.ManagedDataAccess.dll code I would expect OracleDataReader to cast to OracleDecimal (or System.Numerics.BigInteger) instead of System.Decimal for large numbers.
Is this a bug?
Stack trace:
   at Oracle.ManagedDataAccess.Client.OracleDataReader.GetDecimal(Int32 i)
   at Oracle.ManagedDataAccess.Client.OracleDataReader.GetValue(Int32 i)
   at Oracle.ManagedDataAccess.Client.OracleCommand.ExecuteScalar()
   at Cora.Data.DBProvider.Tests.CoraParameterTest.BigIntegerOracleTest() in D:\svnroot\tech\lib\Cora.Data.DBProvider\Cora.Data.DBProvider.Tests\CoraParameterTest.cs:line 98
How to reproduce:
- create a table NUNITTEST_PARAM_SIMPLE with a column BIG of type NUMBER(38)
- run sample code
            using ( OracleConnection conn = new OracleConnection(ORACONN) )
                conn.Open();
                using ( OracleCommand cmd = conn.CreateCommand() )
                    cmd.CommandText = "insert into NUNITTEST_PARAM_SIMPLE (BIG) values (1234567890123456789012345678901234567)";
                    cmd.ExecuteNonQuery();
                using ( OracleCommand cmd = conn.CreateCommand() )
                    cmd.CommandText = "select BIG from NUNITTEST_PARAM_SIMPLE";
                    object result = cmd.ExecuteScalar();          // Exception
                conn.Close();

There is no safe type mapping for ExecuteScalar. It's an uncommon use case.
Even if there was, making the correct conversion implicitly would lead to more work for the application developer. Let's assume ODP.NET performs the "right" conversion. Now, the app needs to manipulate the data. What data type does it treat the returned value as: string or decimal? It could be either. That means twice as much code. One set deals with the data if a decimal was returned. The second deals with the data if a string is returned.
It would be much easier to write code for one scenario, rather than two. That is why ODP.NET safe type mapping is an explicit conversion the developer makes.

AssociatedXMLElement InvalidCastException

Hi
I've tried asking this in the Scripting forum but no reaction so far..
Maybe some of you C++ guys have worked with InDesign as a COM object in VS and have an idea on how to solve this.
I can't use AssociatedXMLElement property in CS3.
It throws an InvalidCastException with the message, "Return argument has an invalid type." if a TextFrame or Rectangle has a Tag
What is wrong with this code...?
Dim Rec As InDesign.TextFrame
Rec = myDocument.TextFrames.FirstItem
Dim x As Object
x = Rec.AssociatedXMLElement
/Andy
Using VS2005 and CS3 5.0.3.662

Hi Andy,
I've somehow missed your question in the other forum, but the short answer is: don't use Dim. Turn Option Explicit off. In essence, act as if you are working in VBScript (member of the VB family supported by InDesign), and you'll get much better results. InDesign scripting relies on the Variant type, and is loosly-typed by design. Trying to use stronger typing will only cause problems.
Thanks,
Ole

System.InvalidCastException error

Hi,
I have a form with a matrix and an import button. Users can import records from a text file into a user defined table. After the import into table is complete, the form is refreshed with records from the table. It all works fine when there are only a few records. But if it takes longer to import, I get the following error multiple times during form refresh.
System.InvalidCastExcpet: QueryInterface for interfaceSAPbouiCOM.itemEvent failed at SAPbouiCOM.ItemEventClass.Get_FormUID
This happens even if the focus is on my form. If I switch to another application, I get this error even if the I import only a few records.
All the records get imported, the error is only during form refresh.
Can anybody help? Thanks in advance.
Thanks,
Aparna

Hi Gianluigi,
Sorry for not posting an update in the past month. I have been trying quite a few things to resolve this issue. I did try using the .Net Profiler but it was not of much use. The only message I get in the profiler is as follows:
Type: System.Runtime.InteropServices.COMException
Call: thrown
Type: System.InvalidCastException
Call: Thrown
I think the error is somehow related to UI API and window refresh. But I am not sure what it is. Interestingly, I get the error only while dealing with large data set.
Thanks,
Aparna

System.InvalidCastException

Every time I update a file in the APP_CODE folder in asp.net I get the following error.
System.InvalidCastException: [A]TexasClass.TexasTest cannot be cast to [B]TexasClass.TexasTest. Type A originates from 'App_Code.w8xmcutn, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' in the context 'Default' at location 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary
ASP.NET Files\root\15ae04a3\80f6a04b\App_Code.w8xmcutn.dll'. Type B originates from 'App_Code.dqtbd99q, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' in the context 'Default' at location 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET
Files\root\15ae04a3\80f6a04b\App_Code.dqtbd99q.dll'. at ASP.admin_texesview_aspx.OpenExam(Byte[] bin)
The problem is a duplicate DLL is created when I update a code file. I can resolve it by restarting the server(I did that because I am not sure which file to delete).
Why is this happening and how can I avoid it?

Hi SpaceCityIT,
In my opinion, this thread is related to ASP.NET forum. So please post thread on ASP.NET forum for more effective response. Thank you for understanding. Please refer to the following link.
http://forums.asp.net/.
Regards,
We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time. Thanks for helping make community forums a great place.
Click
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InvalidCastException run an execution in WPF host

i got this error when I ran the execution in my WPF host.
An exception occurred inside of the call to .NET member 'CreateFromXmlFile': System.InvalidCastException: [A]TsDllCall.Person cannot be cast to [B]TsDllCall.Person. Type A originates from 'TsDllCall, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' in the context 'Default' at location 'C:xxx\Issues\TsDllHell\bin\Debug\TsDllCall.dll'. Type B originates from 'TsDllCall, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' in the context 'LoadFrom' at location 'C:\xxx\Issues\TsDllHellSeq\tsdllcall.dll'.
at TsDllCall.Person.CreateFromXmlFile(String filePath) [Error Code: -17500]
The WPF host has loaded the TsDllCall.dll. The sequence loaded the DLL from another location. Both DLLs are identical. For a reason they have to be in different location. Somehow TestStand did not realize that the WPF host has loaded the DLL, instead it tried to load it from another location.
Any idea on how to solve this? I don't want to put them in GAC if possible.
Thanks.
Attachments:
TsDllHell.zip ‏69 KB

The WPF host is statically linked to the TsDllCall.dll and it uses 'new' operator to create the object. For the function call in the sequence file, it uses XmlSerializer to create the object. It gives no error if I use the 'new' operator to create the object.
I have created the event handler for AssemblyResolve. It requested the following assembly:
TsDllCall.XmlSerializers
TsDllCall.XmlSerializers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
I have genarated the TsDllcall.XmlSerializers.dll using SGen and put it together with the 2 TsDllCall.dll. I load the one used by the sequence file in the event handler but I still get the same error. I'm not sure if I'm doing it correctly.
However, I have found another solution: http://sixlettervariable.blogspot.com/2007/05/net-xmlserializer-and.html
Place this in my app.config and the problem has gone.
<system.diagnostics>
<switches>
<add name="XmlSerialization.Compilation" value="4" />
</switches>
</system.diagnostics>
I don't know what is it doing exactly. I will use this solution for now.
Thanks for the help.

InvalidCastException with DI Company Object - SBO 2007 SP1 PL05

Hi, after updating to SBO 2007 SP1 PL05 i cannot start the AddOn, when it comes to the single Sign-On, i get the error message "InvalidCastException".
The code is as follows:
oCompany = new SAPbobsCOM.Company();
oCompany = (SAPbobsCOM.Company) SBO_Application.Company.GetDICompany();
Does anybody know the problem?

Solved, after re-reinstalling DI API!

IUriToStreamResolver.UriToStreamAsync - InvalidCastException in TaskToAsyncOperationWithProgress

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