NavigateUrl

[Sasan]

I've been trying to change the NavigateUrl attribute of a Node in a TreeView from codebehind when the tree is initially loaded.

Protected Sub RadTreeView1_NodeClick(ByVal sender As Object, ByVal e As Telerik.Web.UI.RadTreeNodeEventArgs) Handles RadTreeView1.Load
    RadTreeView1.FindNodeByText("Upload Company Documents").NavigateUrl() = "~/upload/upload.aspx?b=" & Server.UrlEncode(Encrypt("&DT=C" & "&dummy="))
End Sub

This returns the following error: "Unable to cast object of type 'System.EventArgs' to type 'Telerik.Web.UI.RadTreeNodeEventArgs'."
In order to get around this problem I decided to do a Response.redirect and I can move to the desired page but I would like to be able to change the NavigateUrl attribute of a given Node during the Load of the TreeView.

Protected Sub RadTreeView1_NodeClick(ByVal sender As Object, ByVal e As Telerik.Web.UI.RadTreeNodeEventArgs) Handles RadTreeView1.NodeClick
    If RadTreeView1.FindNodeByText("Upload Company Documents").Selected Then
        Response.Redirect("~/upload/upload.aspx?b=" & Server.UrlEncode(Encrypt("&DT=C" & "&dummy="))
    End If
End Sub

Any help is appreciated.

[Kevin]

Hello Sasan,

The reason you get that error is because your method signature for the Load event is incorrect. It should look like this:

Protected Sub RadTreeView1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles RadTreeView1.Load
    RadTreeView1.FindNodeByText("Upload Company Documents").NavigateUrl = "~/upload/upload.aspx?b=" & Server.UrlEncode(Encrypt("&DT=C" & "&dummy="))
End Sub

That's what the error was saying, the e parameter needed to be of type System.EventArgs. The way you had is for the NodeClick event and some other RadTreeView events.

I hope that helps.

[Sasan]

Thank you Kevin!