Simple X Control

Cluster containing:
1. Radio button with 2 selectors
2. Two (2) numeric controls
Radio selection 1 -> Numeric control 1 enabled, Numeric control 2 disabled and grayed.
Radio selection 2 -> Numeric control 2 enabled, Numeric control 1 disabled and grayed.
Is there a way of building a control (i.e. xcontrol) with this simple inbuilt functionality? Do not want to code properties in subVI of main VI.
Thanks.

In LabVIEW, go to Help->Find Examples... and perform a search for XControls.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
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Similar Messages

Simple PID Control

Hi there,
I'm using an old version of LV, LV 6i to be exact. Now I am constructing a simple PID control to control temperature of a room. I am using NI PCI-6024E as my DAQ card. But, in the middle of trying to get the program right, I stuck at the PID control. I am using the "simplePID".vi, and connect everything that necessary, the high and low limits, the parameters (P, I, and D), setpoint, take subVI "Temp".vi and connect to process variable and the output of the "simplePID".vi to a chart.
The problems occured when I am running the program, the temperature did give readings like normal, and i set the setpoint and limits, and also the parameters. But it seem like the "simplePID".vi did not responds to these values. As the program is running, i clicked on the "simplePID".vi and see that the value of the parameters inside it doesn't changed to the values that I set earlier. Why is this happening. Am I missing something important.
I attached the pictures and my VI for your reference. Thanks in advance.
Solved!
Go to Solution.
Attachments:
29092012.vi ‏32 KB

Apparently, in the Execution tab, the only option ticked is "Auto Handling of Menus at Launch", and i unticked it, try to run the program, and it worked.
Thanks so much for helping me to figure this out
I have another question, do my DAQ card (PCI-6024-E) can be used with any LV program, the latest or the old versions?
and can it be used with trial version of new LV?
Thanks!

Simple way to create a slideshow? Real simple - no controls needed.

Greetings - new client wants a series of images fading into
one another on
their homepage. I think Flash is the way to go. I have done
this before
manually using pictures on separate layers and adding
tweening and alpha
fades but its a mare to do if there are many images and
difficult to tweak
afterwards. Is there a simple cheap or free tool that does
this kind of
thing? I dont need user controls or thumbnails - just fading
images. I have
Flash pro.
Thanks.
James Loudon
www.fatgraphics.com
websites:
hotography::video

Thanks Jim
I'll give that a go. Much appreciated
James Loudon
www.fatgraphics.com
websites:
hotography::video
"Jim Esteban" <[email protected]> wrote in
message
news:[email protected]...
> Here's a simple piece of code that does just what you
want. It's yours.
> Put
> the images in the same directory as the flash file and
make sure they are
> the
> correct size because it doesn't do any resizing or
centering.
>
> var localPath:String="flash/slides/";
> var counter:Number=0;
> var counterMax:Number=300;
> var fadeRange:Number=50;
> var hifadeThreshold:Number=counterMax-fadeRange;
> var lofadeThreshold:Number=fadeRange;
> var fadeDelta:Number;
> while(_framesloaded<_totalframes)
> {
> for(var i:Number=0;i<1000;i++)
> {
> //do nothing
> }
> }
> var slides:Array = new Array([
>
"image1.jpg"],["image2.jpg"],["image3.jpg"],["image4.jpg"],["image5.jpg"],["imag
>
e6.jpg"],["image7.jpg"],["image8.jpg"],["image9.jpg"],["image10.jpg"],["image11.
>
jpg"],["image12.jpg"],["image13.jpg"],["image14.jpg"],["image15.jpg"]);
> var currentSlide:Number;
> function changeSlide(number:Number)
> {
> if(number >= 0 and number < slides.length)
> {
> currentSlide = number;
> placeholder_mc._alpha=100;
> loadMovie(localPath + slides[number],"placeholder_mc");
>
> for(var i:Number=0;i<1000;i++)
> {
> //do nothing
> }
> }
> }
> changeSlide(0);
> this.onEnterFrame=function()
> {
> counter=counter+1;
> if(counter>=hifadeThreshold)
> {
> fadeDelta=counter-hifadeThreshold;
> fadeRange=counterMax-hifadeThreshold;
> placeholder_mc._alpha=100-((fadeDelta/fadeRange) * 100);
> }
> if(counter<=lofadeThreshold)
> {
> fadeDelta=lofadeThreshold-counter;
> fadeRange=lofadeThreshold-1;
> placeholder_mc._alpha=100-((fadeDelta/fadeRange)*100);
> }
> if(counter>=counterMax)
> {
> counter=0;
> changeSlide(Math.abs((currentSlide+1)%slides.length));
> }
> }
> prev_btn.onRelease = function()
> {
> changeSlide(Math.abs((currentSlide-1)%slides.length));
> }
> next_btn.onRelease = function()
> {
> changeSlide(Math.abs((currentSlide+1)%slides.length));
> }
> progress_mc.onEnterFrame = function()
> {
> var
progressAmount:Number=Math.round((counter/counterMax)*100);
> this.gotoAndPlay(progressAmount);
> if(progressAmount == 100)
> {
> this._visible = false;
> }
> else
> {
> this._visible = true;
> }
> }
>

Simple motor control with Labview

Can anyone suggest a simple motor to be controlled by labview. I am interested in making a small scale elevator that is controlled with a labview interface. If anyone could point me in the right direction it would be greatly appreciated. - Bryan

Attached is the vi for the program. I will also try and attach the C code for the project. It took a lot of failed attempts to get it working so I hope this works for you. I don't have a schematic for you, but if you look over the C code it should let you know. Also I used the CCS development kit 16F877A. I'm not great at programming in C so there is a good chance you can clean it up a bit.
I'll keep an eye on this post if you have any questions, when winter comes I'll probably work on this some more.
Message Edited by nutmegzzzz on 09-19-2005 01:56 PM
Attachments:
Serial Read with Timeout version 1b.vi ‏169 KB
LED and Motor Control from LabView - Complete.c ‏3 KB

How to use while loops to implement a simple climate control.

Hi,
I am currently a 4’th year computer systems engineering student in South Africa doing a primitive climate control project in LabVIEW 8.0. Although my knowledge and skill level of LabVIEW is far from that of an expert, I really enjoy working with it. The project consists of a motor driving some fan blades, a resistor heater and an analog temperature sensor. The basic functionality entails that a user specifies a desired temperature and then the program will heat if the current temperature is lower than desired or cool if the current temperature is above the desired temperature.
What I want to add is an acceptable temperature difference so that the fan and heater do not switch constantly as the threshold temperature is reached. Rather leave the current temperature to linger between the maximum (current + acceptable difference) or minimum (current – acceptable difference) allowed temperature before heating or cooling it to the desired temperature once again.
I have attached 2 VI’s:
Final Assignment: I tried to achieve the sensible climate control by making use of a formula node. As soon as I substituted the if statements in the formula node with while statements, the VI did not respond. It did not give any errors, it just didn’t respond.
Final Assignment2: I tried the same but by making use of while loop structures. The while where my Input DAQ is works fine, but none of the other while loops work.
Please advise me on possible solutions for my problem/project.
Thank you in advance.
D. Weppenaar
Attachments:
Final Assignment1.vi ‏254 KB
Final Assignment21.vi ‏256 KB

1. Your VI does not respond because your formula node is trapped in an infinite loop and cannot exit if you're out of the deadband. Replace the words "while" with "if" (or similar) and you might be getting somewhere. Sorry, I don't have DAQ installed, but what determines the loop rate?
2. You have a dataflow issue. Only the inner loop on the left will run. All other loops must wait because they depend on data from the first loop. data is only available at an output tunnel of a loop once the loop finishes and a loop cannot start until all input tunnels contain data. Also the first loop can never stop, because the stop button is outside the loop and will never get read once the inner loop starts. The stop button needs to be in the innermost loop.
Most likely, all code segments should run synchronized, so delete all the inner loops. They serve no purpose. All yon need is the big outer loop as in the first code.
There are many ways to directly observe what is going on. For example you could run the VI in execution highlighting mode while watching the diagram.
Clearly, you need to become more familiar with LabVIEW basics. Maybe do a tutorial? Right now you might think that dataflow is a hindrance while in fact it is one of the most powerful advantages of dataflow programming. You simply need to be familiar with its logic.
LabVIEW Champion . Do more with less code and in less time .

Simple Flash Control Question?

I have a small problem with controlling a flash sprite.
I have a "photo gallery" type of Flash cast member where
users may select a picture. The problem is, is when they advance to
the next frame in the Director timeline, and then go back to the
Director frame where the photo gallery Flash sprite resides, the
Flash sprite has gone back to the first frame. I want the user to
know what "picture" was selected if they go back to that frame in
the director movie , basically keeping the playhead of the flash
cast member where it is. Is there a way to get a Flash cast member
to stay on the frame and not "reload" to the first frame?

The low-tech way to do that is to stretch out the Flash
sprite sp it
spans all the frames needed (possibly your whole
presentation). Set the
sprite to be offstage during the parts that it should not be
shown, like
set the loc to point(-1000,-1000) or something. When the
playhead is on
the frames where you should see it, place it where it should
be seen.
That way, it will never forget it's state.

Simple color control panel.

My largest beef with Lightroom is that for the most part, the HSL sliders are good for creative color but difficult and slow for color corrections. And the white balance controls are terrible for color corrections when used to an RGB system as used in Photoshop (RGB Histogram, RGB Curves and probably the most useful, least appreciated tool the Color Balance controls.)
What I suggest is either a panel on the main Develop module with essentially the Photoshop Color Balance controls (perhaps plus a density slider) with the ability to switch to an RGB Histogram or Curves mode as well. Or better yet, an additional module that has these controls plus Density, Gamma, Contrast, Saturation, Vibrance and a customizable display of one or several images for easy color corrections and display of reference images and/or a selected image in the set to help aim color and skin tones towards.
Any improvement in the speed and ease of color correction would be great.

Simple Interface control

sometime when i am working with multiple projects open i drag a window apart from the main canvas making 2 canvases.
Often when i do the part of the window that has the project name goes behind the upper interface. Normally when this happens i close the project and reopen to get the dragable part back.
But is there another way to handle this?

Preditor Corbett wrote:
But is there another way to handle this?
Well, you could turn off the Application Frame under the Window menu. Or, you can bring any open image to the front by selecting it under the Windows menu at the bottom...that will pop any image behind the Application Frame to the front. You can also use the keyboard command Control plus Tab to move between open images...

Simple device control with LabVIEW 7

Hello,
I have been a LabVIEW user for about 6 months and feel very comfortable with the "basics." I have used V7.1 with SCB-68 connectors as well as SCXI-1100 systems. I have written vi's that take voltage in from a variety of devices and produce good results.
For the next phase of my "education" I would like to build simple vi's that do things like turn motors or pumps on and off. After that, I would like to be able to use a vi to say, adjust the speed of a DC motor.
Are there vi's or links at the NI site that can help. I have searched the site extensively but have not found anything that propels the user from the passive analog input stage to using LabVIEW to interact with devices in the lab.
Please advise.
Thanks!

Unless you're using the SCXI-1600 to drive the SCXI system, you should
have a DAQ card that has a couple analog outputs on it. If you do have
have the SCXI-1600, you'll need to get hold of a DAQ card that has
analog out's on it. Check out NIs M Series of cards or the SCXI analog output cards.
Once you have something that generatea a voltage, open the Example
Finder in LabVIEW (Help>Find Examples) ans double click through
"Hardware Input/Output>DAQmx>Analog Generation>Voltage" and
you'll see several examples showing you how to create a voltage. These
examples all have the source code included so you can see how
everything is done. Use then as a starting point and save them
somewhere else if yo modify one.
Ed
Ed Dickens - Certified LabVIEW Architect - DISTek Integration, Inc. - NI Certified Alliance Partner
Using the Abort button to stop your VI is like using a tree to stop your car. It works, but there may be consequences.

Simple Volume Control

Hello.
Im having a bit of a struggle understanding volume control in
AS3. I have never needed to do this but now I do....So if anyone
can post me some ideas on how to start off my code I would very
much appreciate it.
I just want the user to click a button and the volume (in my
embedded flv) to turn off and on likewise when they click it again.
I have a little piece of dynamic text that also I want to say "OFF"
or "ON" depending on if the volume is on or off.
Thank you very much for any insight.

Well, unfortunately there is no way around learning AS3 and
understanding of documentation, which is actually, very clear when
AS3 concepts are grasped.
In your case, soundTransform is a property of NetStream - not
a separate entity. So, if, say, you name your NetStream variable
myNetStream:
var myNetStream:NetStream = new NetStream();
then you can manipulate its sound. In your function the
mistake is that you attempt to call SoundTransform method on your
button - not your NetStream. Unless the button has this method (or
property) - it will not work.
Sound volume is a method of a separate class SoundTransform.
So, you need a separate variable for it.
Another thing is that SoundTransform (with capital S) is a
class name - not method name. Method starts with the lower "s".
I guess you functionality has to be rewritten:
var myNetStrem:NetStream = new NetStream();
var mySoundTransform:SoundTransform = new SoundTransform();
function btnVolume(e:Event):void{
mySoundTransform.volume = 0;
myNetStream.soundTransform = mySoundTransform;
to make the same function to do two things you can write a
two-state switch:
function btnVolume(e:Event):void{
mySoundTransform.volume = 1 - mySoundTransform.volume;
myNetStream.soundTransform = mySoundTransform;
So, if the volume is 1 - it will become 0, if it is 0 - it
will become 1.

Simple volume control for fluxbox systray [Solved]

I've been googling for this, but apparently this is a very exotic thing I'm looking for: just an icon in my systray that controls the system volume, preferrably just by scrolling up and down on it. KDE has it, Windows (nearly) has it, so I'm sure it exists, but damn if I can find it.
EDIT: I'll be trying gvtray, as suggested by skymt.
Last edited by kamagurka (2007-08-02 14:13:48)

skymt wrote:gvtray will do what you want.
Allright, thank you. Looks like what I need, even if it comes with a couple of utilities I don't need. The website is completely sparse on information, though (screenshots would be nice).

Composite control - change text property of textbox from .cs file

Hi All,
I have created a composite control with dropdowns and hiddenfield for datepicker. Now when I change the value of dropdown from browser - client side then its value is retained on postback. But when I change value programmatically its not reflected on
screen.
using System;
using System.Text;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.ComponentModel;
using System.Drawing;
using System.Web;
using System.Web.UI;
using System.Web.UI.Design;
using System.Web.UI.WebControls;
using Microsoft.Practices.EnterpriseLibrary.Validation.Validators;
namespace GOV.Framework.Portal.Controls
/// <summary>
/// Simple DateTimePicker control that uses jQuery UI DatePicker to pop up
/// a date, time or both picker.
/// </summary>
[ToolboxBitmap(typeof(System.Web.UI.WebControls.Calendar)), DefaultProperty("SelectedValue"),
ToolboxData("<{0}:DateTimePicker runat=\"server\"></{0}:DateTimePicker>"), PersistenceMode(PersistenceMode.InnerProperty)]
public class DateTimePicker : WebControl
#region "Global Variables"
public enum DisplayControls
TextBox,
Dropdown
public enum DisplayModes
Button,
ImageButton,
AutoPopup,
Inline,
public enum DisplayTypes
Time,
Date,
DateTime
public enum DisplayMonthTypes
Full,
Short
private enum DisplayYearTypes
Full,
Short
private DropDownList ddlDay = new DropDownList();
private DropDownList ddlMonth = new DropDownList();
private DropDownList ddlYear = new DropDownList();
private TextBox txtDate = new TextBox();
private Label lblMsg = new Label();
private System.Web.UI.WebControls.Image imgCal = new System.Web.UI.WebControls.Image();
private HiddenField hdnDate = new HiddenField();
private DisplayModes _DisplayMode = DisplayModes.ImageButton;
private DisplayControls _DisplayControl = DisplayControls.TextBox;
private DisplayTypes _DisplayType = DisplayTypes.DateTime;
private int _StepMinutes = 1;
private int _StepHours = 1;
private DateTime? _MinDate = null;
private DateTime? _MaxDate = null;
private string _OnClientSelect = "";
private string _ButtonImage = "../Images/calendar.png";
private string _CalendarCss = "WebResource";
private string _CalendarJs = "../scripts/timepicker.js";
private DisplayMonthTypes _DisplayMonthType = DisplayMonthTypes.Full;
private DisplayYearTypes _DisplayYearType = DisplayYearTypes.Full;
private int _minYear = DateTime.Now.Year - 25;
private int _maxYear = DateTime.Now.Year;
private int _minMonth = 1;
private int _maxMonth = 31;
private int _minDay = 1;
private int _maxDay = 28;
private string _dateControlClientId = string.Empty;
DateTime? _SelectedDate = null;
private bool _DisplayMessageLabel = true;
private short _tabIndex;
private const string vwst_SelectedDate = "_SelectedDate";
#region "ErrorMessages"
private const string SelectedDate_GreaterThan_MaxDate = "SelectedDate can not be greater than MaxDate";
private const string MaxDate_LessThan_SelectedDate = "MaxDate can not be less than SelectedDate";
private const string SelectedDate_LessThan_MinDate = "SelectedDate can not be less than MinDate";
private const string MinDate_GreaterThan_SelectedDate = "MinDate can not be greater than SelectedDate";
#endregion
#endregion
#region "Properties"
#region "Private Properties"
[Description("Determines display full or short(yy) year")]
[Category("DateTime Selection"), DefaultValue(typeof(DisplayTypes), "string")]
private DisplayYearTypes DisplayYearType
get
return _DisplayYearType;
set
_DisplayYearType = value;
[Description("Determines minimum year to be displayed in dropdown : Default currentyear - 25")]
[Category("DateTime Selection"), DefaultValue(typeof(DisplayTypes), "int")]
private int MinYear
get
if (MinDate != null)
_minYear = MinDate.Value.Year;
else
_minYear = DateTime.Now.Year - 25;
return _minYear;
//set
// _minDisplayYear = value;
[Description("Determines maximum year to be displayed in dropdown : Default currentyear")]
[Category("DateTime Selection"), DefaultValue(typeof(DisplayTypes), "int")]
private int MaxYear
get
if (MaxDate != null)
_maxYear = MaxDate.Value.Year;
else
_maxYear = DateTime.Now.Year;
return _maxYear;
//set
// _maxDisplayYear = value;
private string DateControlClientId
get
if (DisplayControl == DisplayControls.Dropdown)
_dateControlClientId = hdnDate.ClientID;
else
_dateControlClientId = txtDate.ClientID;
return _dateControlClientId;
[Description("Determines minimum month of min date : default 1")]
[Category("DateTime Selection"), DefaultValue(1)]
private int minMonth
get
if (MinDate != null)
_minMonth = MinDate.Value.Month;
else
_minMonth = 1;
return _minMonth;
[Description("Determines max months of max date: Default 12")]
[Category("DateTime Selection"), DefaultValue(12)]
private int maxMonth
get
if (MaxDate != null)
_maxMonth = MaxDate.Value.Month;
else
_maxMonth = 1;
return _maxMonth;
[Description("Determines minimum day : Defualt 1")]
[Category("DateTime Selection"), DefaultValue(1)]
private int minDay
get
if (MinDate != null)
_minDay = MinDate.Value.Day;
else
_minDay = 1;
return _minDay;
[Description("Determines max day: Defualt last day of max month")]
[Category("DateTime Selection"), DefaultValue(30)]
private int maxDay
get
if (MaxDate != null)
_maxDay = MaxDate.Value.Day;
else
_maxDay = DateTime.DaysInMonth(MaxYear, maxMonth);
return _maxDay;
#endregion
#region "Public Properties"
/// <summary>
/// The currently selected datetime
/// </summary>
[Category("DateTime Selection")]
public DateTime? SelectedValue
get
DateTime dt = new DateTime();
if (DisplayControl == DisplayControls.TextBox && txtDate.Text != "")
DateTime.TryParse(txtDate.Text, out dt);
else if (DisplayControl == DisplayControls.Dropdown && hdnDate.Value != "")
DateTime.TryParse(hdnDate.Value, out dt);
if (dt != null && dt != new DateTime())
_SelectedDate = dt;
else
_SelectedDate = null;
return _SelectedDate;
set
if (!value.HasValue)
txtDate.Text = "";
hdnDate.Value = "";
else
if (value != null && MinDate != null && value < MinDate)
throw new ArgumentOutOfRangeException("SelectedValue", SelectedDate_LessThan_MinDate);
if (value != null && MaxDate != null && value > MaxDate)
throw new ArgumentOutOfRangeException("SelectedValue", SelectedDate_GreaterThan_MaxDate);
string dateFormat = this.DateTimeFormat;
//if ( dateFormat == "Auto")
// dateFormat = CultureInfo.CurrentCulture.DateTimeFormat.ShortDatePattern;
if (DisplayControl == DisplayControls.TextBox)
txtDate.Text = value.Value.ToString(dateFormat);
else if (DisplayControl == DisplayControls.Dropdown)
hdnDate.Value = value.Value.ToString(dateFormat);
_SelectedDate = value;
if (DisplayControl == DisplayControls.Dropdown)
setDropDownValue(value);
[Description("Determines display textbox or dropdowns")]
[Category("DateTime Selection"), DefaultValue(typeof(DisplayModes), "TextBox")]
public DisplayControls DisplayControl
get { return _DisplayControl; }
set { _DisplayControl = value; }
[Description("Determines how the datepicking option is activated")]
[Category("DateTime Selection"), DefaultValue(typeof(DisplayModes), "ImageButton")]
public DisplayModes DisplayMode
get { return _DisplayMode; }
set { _DisplayMode = value; }
[Description("Determines what datetimepicker should return")]
[Category("DateTime Selection"), DefaultValue(typeof(DisplayTypes), "DateTime")]
public DisplayTypes DisplayType
get
return _DisplayType;
set
_DisplayType = value;
[Description("Increment minute factor when using the time picker.")]
[Category("DateTime Selection"), DefaultValue(1)]
public int StepMinutes
get
return _StepMinutes;
set
_StepMinutes = value;
[Description("Increment hour factor when using the time picker.")]
[Category("DateTime Selection"), DefaultValue(1)]
public int StepHours
get
return _StepHours;
set
_StepHours = value;
private string _DateTimeFormat = CultureInfo.CurrentCulture != null ? CultureInfo.CurrentCulture.DateTimeFormat.ShortDatePattern : "dd/MM/yyyy";
[Description("Determines the Date Format used. Auto uses CurrentCulture.DateTimeFormat.ShortDatePattern. Format: MM month, dd date, yyyy year symbol")]
[Category("DateTime Selection"), DefaultValue("dd/MM/yyyy")]
public string DateTimeFormat
get
return _DateTimeFormat;
set
_DateTimeFormat = value;
[Description("Minumum allowable date. Leave blank to allow any date")]
[Category("DateTime Selection"), DefaultValue(typeof(DateTime?), null)]
public DateTime? MinDate
get
return _MinDate;
set
if (value != null && SelectedValue != null && value > SelectedValue)
throw new ArgumentOutOfRangeException("MinDate", MinDate_GreaterThan_SelectedDate);
_MinDate = value;
[Description("Maximum allowable date. Leave blank to allow any date.")]
[Category("DateTime Selection"), DefaultValue(typeof(DateTime?), null)]
public DateTime? MaxDate
get
return _MaxDate;
set
if (value != null && SelectedValue != null && value < SelectedValue)
throw new ArgumentOutOfRangeException("MaxDate", MaxDate_LessThan_SelectedDate);
_MaxDate = value;
[Description("Client event handler fired when a date is selected")]
[Category("DateTime Selection"), DefaultValue("")]
public string OnClientSelect
get
return _OnClientSelect;
set
_OnClientSelect = value;
[Description("Url to a Calendar Image. Applies only if the DisplayMode = ImageButton")]
[Category("DateTime Resource"), DefaultValue("../Images/calendar.png")]
public string ButtonImage
get { return _ButtonImage; }
set { _ButtonImage = value; }
[Category("DateTime Resource"), Description("The CSS that is used for the calendar or empty for default."), DefaultValue("WebResource")]
public string CalendarCss
get { return _CalendarCss; }
set { _CalendarCss = value; }
[Description("Location for the calendar JavaScript or empty for default.")]
[Category("DateTime Resource"), DefaultValue("../scripts/timepicker.js")]
public string CalendarJs
get { return _CalendarJs; }
set { _CalendarJs = value; }
[Description("Determines what to Display full Month name or short month name")]
[Category("DateTime Selection"), DefaultValue(typeof(DisplayTypes), "string")]
public DisplayMonthTypes DisplayMonthType
get
return _DisplayMonthType;
set
_DisplayMonthType = value;
[Description("Display static label for msg below date control")]
[Category("DateTime Selection"), DefaultValue(true)]
public bool DisplayMessageLable
get { return _DisplayMessageLabel; }
set { _DisplayMessageLabel = value; }
[Bindable(true)]
[DefaultValue("false")]
public override short TabIndex
get
return _tabIndex;
set
_tabIndex = value;
ddlDay.TabIndex = value;
ddlMonth.TabIndex = value;
ddlYear.TabIndex = value;
imgCal.TabIndex = value;
#endregion
#endregion
#region "Events"
public DateTimePicker()
this.Width = Unit.Pixel(80);
/// <summary>
/// Load all controls
/// </summary>
/// <param name="e"></param>
protected override void OnInit(EventArgs e)
base.OnInit(e);
//Controls.Clear();
//CreateAndAddControls();
/// <summary>
/// Add Child controls - Dropdowns and textbox;
/// </summary>
protected override void CreateChildControls()
base.CreateChildControls();
Controls.Clear();
CreateAndAddControls();
/// <summary>
/// Load all controls
/// </summary>
/// <param name="e"></param>
protected override void OnLoad(EventArgs e)
base.OnLoad(e);
if (DisplayControl == DisplayControls.Dropdown)
if (ddlDay.Items.Count == 0 || ddlMonth.Items.Count == 0 || ddlYear.Items.Count == 0 || !Page.IsPostBack)
FillDropdowns();
generateDisplayMessage();
protected override void LoadViewState(object savedState)
base.LoadViewState(savedState);
protected override void LoadControlState(object savedState)
base.LoadControlState(savedState);
protected override object SaveViewState()
if (HasControls() && Page.IsPostBack)
ddlDay.SelectedValue = "11";
object obj = base.SaveViewState();
return obj;
protected override void TrackViewState()
base.TrackViewState();
/// <summary>
/// Most of the work happens here for generating the hook up script code
/// </summary>
/// <param name="e"></param>
protected override void OnPreRender(EventArgs e)
base.OnPreRender(e);
// Register resources
this.RegisterResources();
string script = GenerateScript();
Page.ClientScript.RegisterStartupScript(this.GetType(), "_cal" + this.ID, script, true);
/// <summary>
/// Render Control
/// </summary>
/// <param name="writer"></param>
public override void RenderControl(HtmlTextWriter writer)
if (this.DisplayMode != DisplayModes.Inline)
base.RenderControl(writer);
else
writer.Write("<div id='" + this.ClientID + "Div'></div>");
if (HttpContext.Current == null)
if (this.DisplayMode == DisplayModes.Button)
writer.Write(" <input type='button' value='...' style='width: 20px; height: 20px;' />");
else if ((this.DisplayMode == DisplayModes.ImageButton))
string img;
if (this.ButtonImage == "WebResource")
img = this.Page.ClientScript.GetWebResourceUrl(this.GetType(), "jQueryDatePicker.Resources.calendar.png");
else
img = this.ResolveUrl(this.ButtonImage);
writer.AddAttribute(HtmlTextWriterAttribute.Src, img);
writer.AddAttribute("hspace", "2");
writer.RenderBeginTag(HtmlTextWriterTag.Img);
writer.RenderEndTag();
/// <summary>
/// Render Control
/// </summary>
/// <param name="writer"></param>
protected override void Render(HtmlTextWriter writer)
RenderControls(writer);
#endregion
#region "Methods"
/// <summary>
/// Set properties of control
/// </summary>
private void CreateAndAddControls()
txtDate.ID = "_txtDate";
txtDate.CssClass = "dpDate";
ddlDay.ID = "_ddlDay";
ddlMonth.ID = "_ddlMonth";
ddlYear.ID = "_ddlYear";
imgCal.ID = "_imgCal";
imgCal.CssClass = "trigger";
imgCal.ImageUrl = this.ButtonImage;
//imgCal.Visible = false;
hdnDate.ID = "_hdnDate";
lblMsg.ID = "_lblMsg";
lblMsg.CssClass = "MsgLabel";
if (DisplayControl == DisplayControls.Dropdown)
txtDate.Visible = false;
this.Controls.Add(ddlDay);
this.Controls.Add(ddlMonth);
this.Controls.Add(ddlYear);
this.Controls.Add(hdnDate);
else
txtDate.Visible = true;
this.Controls.Add(txtDate);
this.Controls.Add(imgCal);
this.Controls.Add(lblMsg);
/// <summary>
/// Add Controls to the control
/// </summary>
private void RenderControls(HtmlTextWriter writer)
//if (ChildControlsCreated)
// return;
AddAttributesToRender(writer);
writer.AddAttribute(HtmlTextWriterAttribute.Class, "datePickerTable", false);
writer.RenderBeginTag(HtmlTextWriterTag.Table);//start of table
writer.RenderBeginTag(HtmlTextWriterTag.Tr);//start of tr1
if (DisplayControl == DisplayControls.Dropdown)
writer.RenderBeginTag(HtmlTextWriterTag.Td);
ddlDay.RenderControl(writer);
writer.RenderEndTag();
writer.RenderBeginTag(HtmlTextWriterTag.Td);
ddlMonth.RenderControl(writer);
writer.RenderEndTag();
writer.RenderBeginTag(HtmlTextWriterTag.Td);
ddlYear.RenderControl(writer);
writer.RenderEndTag();
writer.RenderBeginTag(HtmlTextWriterTag.Td);
hdnDate.RenderControl(writer);
writer.RenderEndTag();
else
writer.RenderBeginTag(HtmlTextWriterTag.Td);
txtDate.RenderControl(writer);
writer.RenderEndTag();
writer.RenderBeginTag(HtmlTextWriterTag.Td);
//Control ltrl1 = new LiteralControl();
//writer.AddStyleAttribute(HtmlTextWriterStyle.Display, "None");
//writer.RenderBeginTag(HtmlTextWriterTag.Div);
////ltrl1.RenderControl(writer);
//imgCal.RenderControl(writer);
//writer.RenderEndTag();//end of div
writer.Write("<div style=\"display:none\">");
imgCal.RenderControl(writer);
writer.Write("</div>");
writer.RenderEndTag();
writer.RenderEndTag();//end of tr1
writer.RenderBeginTag(HtmlTextWriterTag.Tr);//start of tr
writer.AddAttribute(HtmlTextWriterAttribute.Colspan, "4", false);
writer.RenderBeginTag(HtmlTextWriterTag.Td);
lblMsg.RenderControl(writer);
writer.RenderEndTag();
writer.RenderEndTag();// end of tr2
writer.RenderEndTag();// end of table
//string newTable = "<table class='datePickerTable'";
//string endTable = "</table>";
//string newTr = "<tr>";
//string endTr = "</tr>";
//string newTd = "<td>";
//string endTd = "</td>";
////Controls.Clear();
//InitControls();
//Controls.Add(new LiteralControl(newTable + newTr + newTd));
//if (DisplayControl == DisplayControls.Dropdown)
// Controls.Add(ddlDay);
// Controls.Add(new LiteralControl(endTd + newTd));
// Controls.Add(ddlMonth);
// Controls.Add(new LiteralControl(endTd + newTd));
// Controls.Add(ddlYear);
// Controls.Add(new LiteralControl(endTd + newTd));
//Controls.Add(txtDate);
//Controls.Add(hdnDate);
//Controls.Add(new LiteralControl(endTd + newTd));
//Controls.Add(new LiteralControl("<div style=\"display:none\">"));
//Controls.Add(imgCal);
//Controls.Add(new LiteralControl("</div>"));
//Controls.Add(new LiteralControl(endTd + endTr));
//Controls.Add(new LiteralControl(newTr + "<td colspan=4>"));
//Controls.Add(lblMsg);
//Controls.Add(new LiteralControl(endTd + endTr + endTable));
/// <summary>
/// Code that embeds related resources (.js and css)
/// </summary>
/// <param name="scriptProxy"></param>
protected void RegisterResources()
// Load the calandar script
string script = this.CalendarJs;
// Load jQuery Calendar Scripts
if (script == "WebResource")
Page.ClientScript.RegisterClientScriptResource(this.GetType(), "jQueryDatePicker.Resources.ui.datepicker.js");
else if (!string.IsNullOrEmpty(script))
Page.ClientScript.RegisterClientScriptInclude(this.GetType(), "__jqueryCalendar", this.ResolveUrl(script));
// Load the related CSS reference into the page
script = this.CalendarCss;
if (script == "WebResource")
script = Page.ClientScript.GetWebResourceUrl(this.GetType(), "jQueryDatePicker.Resources.ui.datepicker.css");
else if (!string.IsNullOrEmpty(script))
script = this.ResolveUrl(this.CalendarCss);
// Register Calendar CSS 'manually'
string css = @"<link href=""" + script + @""" type=""text/css"" rel=""stylesheet"" />";
Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "_calcss", css, false);
/// <summary>
/// Converts a date to a JavaScript date string in UTC format
/// </summary>
/// <param name="date"></param>
/// <returns></returns>
private static string EncodeJsDate(DateTime date)
return "new Date(\"" + date.ToString("U") + " UTC" + "\")";
/// <summary>
/// Generate Javascript for Datepicker plugin
/// </summary>
/// <returns></returns>
private string GenerateScript()
// To capture and map the various option parameters
StringBuilder sbOptions = new StringBuilder(512);
sbOptions.Append("{");
//jQuey Script
StringBuilder sbStartupScript = new StringBuilder(400);
sbStartupScript.AppendLine("jQuery(document).ready( function() {");
string dateFormat = this.DateTimeFormat;
if (!string.IsNullOrEmpty(dateFormat))
dateFormat = this.DateTimeFormat.Replace("MMM", "M").Replace("MM", "mm");
sbOptions.Append("dateFormat: '" + dateFormat + "'");
//string onSelect = this.OnClientSelect;
if (this.DisplayMode == DisplayModes.Button)
sbOptions.Append(",showOnFocus: false, showTrigger: '<button type=\"button\" class=\"trigger\">...</button>'");
else if (this.DisplayMode == DisplayModes.ImageButton)
string img = this.ButtonImage;
if (img == "WebResource")
img = Page.ClientScript.GetWebResourceUrl(this.GetType(), "jQueryDatePicker.Resources.calendar.png");
else
img = this.ResolveUrl(this.ButtonImage);
sbOptions.Append(",showOnFocus: false, showTrigger: '#" + imgCal.ClientID + "'");
sbOptions.Append(", onSelect: DateSelectedFromCalendar ");
if (this.MinDate.HasValue)
sbOptions.Append(",minDate: new Date(" + MinDate.Value.Year.ToString() + "," + (MinDate.Value.Month - 1).ToString() + "," + MinDate.Value.Day.ToString() + ")");
if (this.MaxDate.HasValue)
sbOptions.Append(",maxDate: new Date(" + MaxDate.Value.Year.ToString() + "," + (MaxDate.Value.Month - 1).ToString() + "," + MaxDate.Value.Day.ToString() + ")");
sbOptions.Append(",yearRange:' " + this.MinYear.ToString() + ":" + this.MaxYear.ToString() + "'");
//end of options
sbOptions.Append("}");
// Write out initilization code for calendar
if (this.DisplayMode != DisplayModes.Inline)
sbStartupScript.AppendLine("var cal = jQuery('#" + this.DateControlClientId + "').datepick(" + sbOptions.ToString() + ");");
else
sbStartupScript.AppendLine("var cal = jQuery('#" + this.ClientID + "Div').datepick(" + sbOptions.ToString() + ");");
sbStartupScript.AppendLine("var dp = jQuery.datepicker;");
if (this.SelectedValue.HasValue && this.SelectedValue.Value > new DateTime(1900, 1, 1, 0, 0, 0, DateTimeKind.Utc))
sbStartupScript.AppendLine("dp.setDateFor(cal[0],new Date('" + txtDate.Text + "'));");
sbStartupScript.AppendLine("dp.reconfigureFor(cal[0]);");
//******************* When dropdown changes then reflect it in calendar
if (DisplayControl == DisplayControls.Dropdown)
sbStartupScript.AppendLine("\r\n\r");
sbStartupScript.Append("$('#" + ddlDay.ClientID);
sbStartupScript.Append(",#" + ddlMonth.ClientID);
sbStartupScript.Append(",#" + ddlYear.ClientID + "').change(function() {");
// disable months and days when they are less then day months of minimum date
sbStartupScript.Append("$ddlDay=$('#" + ddlDay.ClientID + "');");
sbStartupScript.Append("$ddlMonth=$('#" + ddlMonth.ClientID + "');");
sbStartupScript.Append("$ddlYear=$('#" + ddlYear.ClientID + "');");
sbStartupScript.AppendLine("var minYear=" + this.MinYear.ToString() + ";");
///disable months of minimum year which are less then minumum date month
sbStartupScript.AppendLine("if($ddlYear.val()<=minYear && $('#" + this.DateControlClientId + "').val!=''){ alert('true');");
sbStartupScript.AppendLine("var minMonth=" + this.minMonth.ToString() + ";");
sbStartupScript.AppendLine("if($ddlMonth.val()<=minMonth){");//start of if of minMonth
sbStartupScript.AppendLine("$ddlMonth.val(minMonth);");
sbStartupScript.AppendLine("var minDay=" + this.minDay.ToString() + ";");
sbStartupScript.AppendLine("$ddlMonth.find('option:lt('+minMonth+')').hide();");
sbStartupScript.AppendLine("if($ddlDay.val()<=minDay)");
sbStartupScript.AppendLine("$ddlDay.val(minDay);");
sbStartupScript.AppendLine("}");// end of if of minMonth
sbStartupScript.AppendLine("else {");
sbStartupScript.AppendLine("$ddlDay.find('option').show();");
sbStartupScript.AppendLine("}");// end of else part of min month
sbStartupScript.AppendLine("$ddlDay.find('option:lt('+minDay+')').hide();");
sbStartupScript.AppendLine("}");// end of if part of min Year
sbStartupScript.AppendLine("else {");
sbStartupScript.AppendLine("$ddlMonth.find('option').show();");
sbStartupScript.AppendLine("}");// end of else part of min Year
///set date in calendar
sbStartupScript.AppendLine();
sbStartupScript.Append("$('#" + this.DateControlClientId + "').datepick('setDate', new Date(\n\r\r ");
sbStartupScript.Append("$('#" + ddlYear.ClientID + "').val(),");
sbStartupScript.Append("$('#" + ddlMonth.ClientID + "').val()-1,");
sbStartupScript.Append("$('#" + ddlDay.ClientID + "').val()));");
sbStartupScript.AppendLine("} );");
//******************* When calendar changes then reflect it in dropdown
sbStartupScript.AppendLine("\r\n\r");
sbStartupScript.AppendLine("function DateSelectedFromCalendar(dates) {");
if (DisplayControl == DisplayControls.Dropdown)
sbStartupScript.AppendLine("$('#" + ddlDay.ClientID + "').val(dates.length ? dates[0].getDate() : '');");
sbStartupScript.AppendLine("$('#" + ddlMonth.ClientID + "').val(dates.length ? dates[0].getMonth() +1 : '');");
sbStartupScript.AppendLine("$('#" + ddlYear.ClientID + "').val(dates.length ? dates[0].getFullYear() : '');");
if (!string.IsNullOrEmpty(this.OnClientSelect))
sbStartupScript.AppendLine(this.OnClientSelect + "();");
sbStartupScript.AppendLine("}");
//******************* Validation Script
sbStartupScript.AppendLine("\r\n\r");
sbStartupScript.AppendLine("$('form').validate({");
sbStartupScript.AppendLine("errorPlacement: $.datepick.errorPlacement,");
sbStartupScript.AppendLine("rules: {");
sbStartupScript.AppendLine(this.DateControlClientId + ": {");//start of format picker
sbStartupScript.AppendLine("required: true, dpDate: true}");//end of formate picker
sbStartupScript.AppendLine("}, ");// end of rules
sbStartupScript.AppendLine("messages: {");
sbStartupScript.AppendLine(this.DateControlClientId + ": 'Please enter a valid date (" + this.DateTimeFormat + ")'");
sbStartupScript.AppendLine("}");// end of messages
sbStartupScript.AppendLine("});"); //end of validate function
//******************* close document ready function
sbStartupScript.AppendLine("} );");
return sbStartupScript.ToString();
/// <summary>
/// Fill day month and year dropdown
/// </summary>
private void FillDropdowns()
//Fill Day Dropdown
ListItem liDay = new ListItem("Day", "0");
ddlDay.Items.Add(liDay);
for (int i = 1; i <= 31; i++)
ListItem li = new ListItem(i.ToString(), i.ToString());
ddlDay.Items.Add(li);
//Fill Month Dropdown
ListItem liMonth = new ListItem("Month", "0");
ddlMonth.Items.Add(liMonth);
string monthName = string.Empty;
for (int i = 1; i <= 12; i++)
switch (DisplayMonthType)
case DisplayMonthTypes.Full:
monthName = CultureInfo.CurrentCulture.DateTimeFormat.GetMonthName(i);
break;
case DisplayMonthTypes.Short:
monthName = CultureInfo.CurrentCulture.DateTimeFormat.GetAbbreviatedMonthName(i);
break;
ListItem li = new ListItem(monthName, i.ToString());
ddlMonth.Items.Add(li);
//Fill Year Dropdown
ListItem liYear = new ListItem("Year", "0");
ddlYear.Items.Add(liYear);
string yearDisplay = string.Empty;
for (int i = MinYear; i <= MaxYear; i++)
switch (DisplayYearType)
case DisplayYearTypes.Full:
yearDisplay = i.ToString();
break;
case DisplayYearTypes.Short:
yearDisplay = i.ToString().Substring(2);
break;
ListItem li = new ListItem(yearDisplay, i.ToString());
ddlYear.Items.Add(li);
setDropDownValue(this.SelectedValue);
private void generateDisplayMessage()
if (this.DisplayMessageLable)
if (this.DisplayControl == DisplayControls.TextBox)
lblMsg.Text = this.DateTimeFormat;
if (this.MinDate != null && this.MinDate.Value != new DateTime())
lblMsg.Text += " From " + this.MinDate.Value.ToString(this.DateTimeFormat);
if (this.MaxDate != null && this.MaxDate.Value != new DateTime())
lblMsg.Text += " To " + this.MaxDate.Value.ToString(this.DateTimeFormat);
private void setDropDownValue(DateTime? dt)
if (ddlDay.Items.Count != 0 && ddlMonth.Items.Count != 0 && ddlYear.Items.Count != 0)
if (dt != null && dt != new DateTime())
ddlDay.SelectedValue = ddlDay.Items.FindByValue(dt.Value.Day.ToString()).Value;
ddlMonth.SelectedValue = ddlMonth.Items.FindByValue(dt.Value.Month.ToString()).Value;
ddlYear.SelectedValue = ddlYear.Items.FindByValue(dt.Value.Year.ToString()).Value;
else
ddlDay.SelectedValue = "0";
ddlMonth.SelectedValue = "0";
ddlYear.SelectedValue = "0";
#endregion
}Usage Of Code in .ascx<cc2:DateTimePicker ID="dtpDOB" DisplayType="Date" DisplayMode="ImageButton" ButtonImage="../Images/calendar.png" runat="server"Changing Value from .cs file dtpDOB.SelectedValue = DateTime.Parse("01/01/2001");It is not reflected in screen

Hello,
According to your code, it's an ASP.NET user control problem. Please post in
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Vivek Joshi wrote:
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