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ServerSideCallBack and htmlencoding problem

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TreeView

This is a migrated thread and some comments may be shown as answers.

Caesar asked on 15 Jun 2011, 02:17 PM

Hi,

When using the treeview with ExpandMode=ServerSideCallBack, the nodes doesn't htmlencode correctly after updatepanel has updated.
Sample:
TestTree.aspx

<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="TestTree.aspx.vb" Inherits="WebApplication4.TestTree" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

<title></title>

</head>

<body>

<form id="form1" runat="server">

<div>

<telerik:RadScriptManager ID="rsm" runat="server">

</telerik:RadScriptManager>

<asp:UpdatePanel ID="up" runat="server" ChildrenAsTriggers="true" UpdateMode="Conditional">

<ContentTemplate>

<telerik:RadTreeView ID="tv" runat="server">

<Nodes>

<telerik:RadTreeNode runat="server" id="tn" Text="test" ExpandMode="ServerSideCallBack">

</telerik:RadTreeNode>

</Nodes>

</telerik:RadTreeView>

</ContentTemplate>

</asp:UpdatePanel>

</div>

</form>

</body>

</html>

TestTree.aspx.vb

Public Class TestTree

Inherits System.Web.UI.Page

Private Sub tv_NodeClick(sender As Object, e As Telerik.Web.UI.RadTreeNodeEventArgs) Handles tv.NodeClick

'Do something

End Sub

Private Sub tv_NodeExpand(sender As Object, e As Telerik.Web.UI.RadTreeNodeEventArgs) Handles tv.NodeExpand

e.Node.Nodes.Add(New Telerik.Web.UI.RadTreeNode(HttpUtility.HtmlEncode("<aaa>")))

End Sub

End Class

To reproduce:
1. Expand the test-node with the plus-image
2. Select the test-node (will cause a postback of the updatepanel)
3. The sub-node "<aaa>" seems to disappear (but in fact it has just not been htmlencoded anymore)

This works if using ExpandMode=ServerSide.

Regards
Caesar

ServerSideCallBack and htmlencoding problem

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