Web Forms :: Can't See TreeView From Code-behind Code Page

Feb 11, 2011

I have an aspx page with a TreeView control named TreeView1. in the Page_Load method I am trying to collapse all nodes except for the current node. I used this code in the Page_Load method:

TreeView1.CollapseAllNodes();
TreeView1.SelectedNode.Expand();

When I try to run this I get the following error:

CS0103: The name 'TreeView1' does not exist in the current context I am using a .NET 2.0 website and can't seem to reference controls in my .aspx page from within my code-behind page. I tried adding an instance of the TreeView before my Page_Load method call in the code behind, but, it still doesn't create a reference.

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[Code]....

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[Code]....

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