Use Telerik AJAX in Medium Trust
Environment
Product | Progress® Telerik® UI for ASP.NET AJAX |
Description
How can I use Telerik UI for ASP.NET AJAX in Medium Trust?
Solution
When your application is running in Medium Trust and you want to use Telerik AJAX on your pages, you need to use any of the following approaches to make Telerik AJAX work properly. Note that in all cases when the application is running in Medium Trust, you can have only one Telerik AJAX control in the whole page hierarchy. Therefore, in complex Master/Content Page applications, it is recommended that you use a single AjaxManager on the Master page which will handle all available Ajax scenarios. This limitation is due to the fact that in Medium Trust the reflection permissions are not granted.
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Inherit your page from the
RadAjaxPage
as shown below:<div class='tabbedCode'><pre lang="C#"><code> public partial class MyPage: System.We.UI.Page {} //should be changed to: public partial class MyPage: Telerik.Web.UI.RadAjaxPage {} ````
Partial Public Class MyPage Inherits System.We.UI.Page End Class 'should be changed to: Partial Public Class MyPage Inherits Telerik.Web.UI.RadAjaxPage End Class ````
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Set the
RestoreOriginalDelegate
property of the Telerik AJAX control tofalse
:<div class='tabbedCode'><pre lang="ASP.NET"><code> <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server" RestoreOriginalRenderDelegate="false"> </telerik:RadAjaxManager> Or <telerik:RadAjaxPanel ID="RadAjaxPanel1" runat="server" RestoreOriginalRenderDelegate="false"> </telerik:RadAjaxPanel> ````
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Implement the
IRadAjaxPage
interface:<div class='tabbedCode'><pre lang="C#"><code> public class MyPage : System.Web.UI.Page, Telerik.Web.UI.IRadAjaxPage { private System.Web.UI.RenderMethod _onRenderDelegate; #region IRadAjaxPage Members public void AttachOnRender(System.Web.UI.RenderMethod renderMethod) { _onRenderDelegate = renderMethod; } ````
Public Class MyPage Inherits System.Web.UI.Page Implements Telerik.Web.UI.IRadAjaxPage Private _onRenderDelegate As System.Web.UI.RenderMethod
Public Sub AttachOnRender(ByVal renderMethod As System.Web.UI.RenderMethod) _onRenderDelegate = renderMethod End Sub Protected Overloads Overrides Sub Render(ByVal writer As System.Web.UI.HtmlTextWriter) If Not _onRenderDelegate Is Nothing Then _onRenderDelegate(writer, Me) End If MyBase.Render(writer) End Sub End Class ````