Hi,

I got the solution working for my scenario. I thought it would be good for all to share the solution.

I Used the webGrid client side event : OnEnterEditMode; to set the value for the webinput control. e.g

WebInput1.SetValueData(CompleteDateTimeToSelect); 

Note that CompleteDateTimeToSelect variable should have the same format as used in the MaskExpression.

In addition to this, I found that when I was trying to use the  <DisplayFormat></DisplayFormat> tag then the datetime value in the webinput was not working. So , i tried removing DispalyFormat tag and it worked.

Here is code for webinput:

<ISWebInput:WebInput ClientSideEvents-OnBlur="WebInput1_OnBlur" ID="WebInput1" runat="server">

    <HighLight IsEnabled="True"  Type="Phrase"  />

    <EditFormat Type="DateTime" Format="MM/dd/yyyy HH:mm" IsEnabled="true">

        <MaskInfo  MaskExpression="00/00/0000 00:00">

        </MaskInfo>

        <ErrorWindowInfo IsEnabled="False">

        </ErrorWindowInfo>

    </EditFormat>

    <DateTimeEditor IsEnabled ="true"></DateTimeEditor>

    <CultureInfo CultureName="en-US">

    </CultureInfo>

</ISWebInput:WebInput>

Now, to get back the date selected by the user and to set in the webinput, I Used the following client side events. 

WebInputs : OnBlur event and WebGrid's OnExitEditMode event.

Hope will help if someone have kind of same problem/case

Thanks,

Ravinder

Thank you for taking the time to share the solution with us. I'm sure your post will help other members that have similar problem/case.