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Find Control RadFileExplorer in RadGrid

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FileExplorer
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cmr
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cmr asked on 07 Jun 2010, 05:46 PM
I am trying to pre-populate the RadFileExplorer's ViewPaths property when an item is selected for editing in the RadGrid control.  In other words, when a user needs to update a record in the grid, the file explorer should default to a specific directory based on certain criteria of the record.  However, when an attempt to locate the file explorer control is made, it cannot be found always resulting in a null assignment.  Is there a particular event to use prior to drawing the EditItemTemplate which contains the file explorer control?  Is there a better way to write the code to perform this dynamic behavior?  Below is some code snippets for the design and C#.

Thanks in advance

Design Page:
<telerik:RadGrid ID="exampleRadGrid" OnItemCommand="exampleRadGrid_ItemCommand"
   <Columns> 
       <telerik:GridTemplateColumn UniqueName="FileName" DataField="FileName" HeaderText="FileName"  SortExpression="FileName"
           <ItemTemplate>                                            
              <asp:Label runat="server" Text='<%#Eval("FileName") %>' ID="fileNameLabel" /> 
           </ItemTemplate> 
           <EditItemTemplate> 
              <telerik:RadTextBox runat="server" Text='<%# Bind("FileName") %>' ID="fileNameRadTextBox" /> 
              <telerik:RadFileExplorer ID="fileNameRadFileExplorer" runat="server" /> 
           </EditItemTemplate> 
       </telerik:GridTemplateColumn> 
   </Columns> 
</telerik:RadGrid> 
 

C# Code:
protected void exampleRadGrid_ItemCommand(object source, GridCommandEventArgs e) 
   RadFileExplorer fileExplorer1 = (RadFileExplorer)FindControl("fileNameRadFileExplorer"); 
   RadFileExplorer fileExplorer2 = e.Item.FindControl("fileNameRadFileExplorer"as RadFileExplorer;             
   // Both variables result in null. 

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Fiko
Telerik team
answered on 14 Jun 2010, 09:42 AM
Hi Cmr,

The controls (including RadFileExplorer control) cannot be found inside the exampleRadGrid_ItemCommand event because thy are not created yet. They can be accessed in RadGrid's ItemDataBound event, however.

Best wishes,
Fiko
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cmr
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Fiko
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