Vary Popup Format at Runtime

[Rick]

My RadGrid shows a Popup for Insert and Edit actions on a row.

In the Popup, I need to set a RadTexbox.Enabled = True/ False based on the value of a RadComboBox in the Popup.

Is there an example demonstrating this?

Thank you,

Rick

[Shinu]

Hello Rick,

Try the following code snippet to achieve your scenario.

C#:

protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
{
     if (e.Item is GridEditFormItem && e.Item.IsInEditMode && !e.Item.OwnerTableView.IsItemInserted)
        {
            GridEditFormItem item = (GridEditFormItem)e.Item;
            RadComboBox combo = (RadComboBox)item.FindControl("RadComboBox1");
            if (combo.SelectedValue == "Value")
            {
                RadTextBox rtxt = (RadTextBox)item.FindControl("RadTextBox1");
                rtxt.Enabled = false;
            }
        }
 }

Thanks,
Shinu

[Rick]

Thank you Shinu!  Your example works well.

Now, how would I get a handle to RadTextBox.Enabled in event RadComboBox.SelectedIndexChanged?

Thanks again,
Rick

[Rick]

I should be more specific...

I have tried to get a handle to textbox like this:

Protected

Sub rcbSource_OnSelectedIndexChanged(ByVal source As Object, ByVal e As _ RadComboBoxSelectedIndexChangedEventArgs)

   Dim rtb as RadTextBox = CType(Me.FindControl("rtbName"), RadTextBox)
End Sub

 
===> But rtb returns as Nothing.  Here is the EditForm insided MasterTableView (RadGrid):
...
<EditFormSettings CaptionFormatString="Edit" CaptionDataField="id" EditFormType="Template"

InsertCaption="Insert New">

<EditColumn ButtonType="PushButton" CancelText="Cancel" UpdateText="Save" />

<PopUpSettings Modal="True" />

<FormTemplate>

<table>

  <tr>

    <td>

     <asp:Label ID="Label1" runat="server" Text="Source"></asp:Label>

    </td>

    <td>

      <telerik:RadComboBox ID="rcbSource" Runat="server" DataSourceID="sdsSources"
        DataTextField="src_name" DataValueField="src_id" AutoPostBack="true"
        SelectedValue='<%# Bind("src_id") %>' Skin="Black"

        OnSelectedIndexChanged="rcbSource_OnSelectedIndexChanged">

     </telerik:RadComboBox>

    </td>

  </tr>

  <tr>

    <td> </td>
    <td>

      <telerik:RadTextBox ID="rtbName" runat="server" Text='<%# Bind("src_text") %>'></telerik:RadTextBox>

    </td>

  </tr>

  <tr> 

    <td> </td>

    <td>

        <telerik:RadButton ID="btnUpdate" runat="server" Text="Save" CausesValidation="True" 
            CommandName='<%# IIf((TypeOf(Container) is GridEditFormInsertItem), "PerformInsert", "Update")%>'>

        </telerik:RadButton>

        <telerik:RadButton ID="btnCancel" runat="server" CommandName="Cancel"

            Text="Cancel">

       </telerik:RadButton>

    </td>

  </tr>

</table>  

 

</FormTemplate>

</EditFormSettings>

 

[Lori]

Hi Rick,

I was just looking at your post, and wondered if there's a typo in the example posted here in the forum, or if this is the way it is in your project. If it is this way in your project, it seems as though you're looking for a control with the name of MyRadTextBox, but the ID of the RadTextBox is rtbName.

[Rick]

Sorry Lori.  The posted code is edited (simplified) from the original.  I made a typo.  I'll fix it now.

I should also mention our use of nested Master pages.  I not sure how to drill down into the Telerik controls to get to rtbName.

[Rick]

Ok, I have it working now.  I used the Parent property of the RadComboBox to get a handle to RadTextBox, its sibling.

Protected Sub rcbSource_OnSelectedIndexChanged(ByVal source As Object, ByVal e As RadComboBoxSelectedIndexChangedEventArgs)

   Dim rcb As RadComboBox = CType(source, RadComboBox)

   Dim x As Panel = rcb.Parent 
 
    Dim rtb As RadTextBox = CType(x.FindControl("rtbName"), RadTextBox)
    If rcb.SelectedItem.Text = "other" Then
        rtb.Enabled = True
    Else
        rtb.Enabled = True
    End If  

End Sub

Thanks all.
Rick