Telerik RadGrid Doesn't Display On First Page_Load But Does On Postback

Mar 17, 2010

I have a page with a drop-down. Based on the selection in the drop-down, data gets loaded and populates a RadGrid. I am using a custom user control for the EditTemplate, so I can't use radGrid.DataBind(). Instead, I have to use radGrid.MasterTableView.Rebind() in association with a NeedDataSource event handler.

My problem is that when I load the page initially, I populate the drop-down and automatically select a value (first item in the list) which triggers the databinding on the RadGrid. I can step through the code in debug mode and see that the grid is being populated with data, but when the page displays, it doesn't get rendered. When I then manually choose an item from the drop-down, which triggers the same grid databinding code, it displays properly the second time.

How do I get it to display the grid the first time the page loads?


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I've got a DNN application using Telerik RadGrid. We're exporting some data from the Grid but when we drill down on the grid control and export the data we only see the initial top level data, never the updated Grid. Here's my table tag and supporting code. I'm not an expert in ASPX/C#so please forgive my newbie-ness.

<mastertableview autogeneratecolumns="False" datakeynames="AccountId" datasourceid="SqlDataSource1"


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protected void rgAllocatedClients_UpdateCommand(object sender, GridCommandEventArgs e)
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Im not sure if this matters. But I am adding the Events to the RadTreeview when the event RadGrid_ItemDataBound is fired.I am noticing one strange behavior, that I cannot explain either, if I do not attach an event to NodeExpand It fails to open or close. Also the NodeDataBound event fires successfully and the data is loading fine into the tree.

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Here is the decleration of the Treeview in the ascx file

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<telerik:GridTemplateColumn UniqueName="FooTreeview">
<telerik:RadTreeView ID="RadTreeView1" runat="server" DataValueField="CommunicationID"
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