New to Telerik UI for ASP.NET AJAX? Download free 30-day trial

Access the controls in the FileBrowser dialogs of RadEditor


Product RadEditor for ASP.NET AJAX


See how to get a reference to the FileExplorer, the Grid, and AsyncUpload inside the Image Manager, Document Manager, or another File Browser dialogs of RadEditor


  1. Register the external dialog files of RadEditor
  2. Copy the EditorDialogs installation folder to the root of the web project
  3. Set the ExternalDialogsPath="~/EditorDialogs/" property ro point to the EditorDialogs folder, e.g.

        <telerik:radeditor runat="server" ExternalDialogsPath="~/EditorDialogs" ID="RadEditor1"> 
        <ImageManager ViewPaths="~/" UploadPaths="~/" /> 
    1. Create a UserControl in the root of your web application for example named UserControl.ascx and define the FindRadControl function which iterates through the Controls collection and looks for RadFileExplorer and its sub-controls:
        <%@ Control Language="C#" AutoEventWireup="true" CodeFile="UserControl.ascx.cs" Inherits="UserControl" %> 
    <script runat="server" type="text/C#">  
        protected void Page_Load(object sender, System.EventArgs args)  
            Telerik.Web.UI.RadFileExplorer rfe = (Telerik.Web.UI.RadFileExplorer)this.FindRadControl(this.Page);  //gives a reference to RadFileExplorer
            if (rfe != null)  
                rfe.AsyncUpload.TabIndex = 2; //returns a reference to RadAsyncUpload
                rfe.Grid.TabIndex = 0; //returns a reference to RadGrid
                rfe.TreeView.EnableAriaSupport = true; //returns a reference to RadTreeView
        private Control FindRadControl(Control parent)  
            foreach (Control c in parent.Controls)  
                if (c is Telerik.Web.UI.RadFileExplorer) return c;  
                if (c.Controls.Count > 0)  
                    Control sub = FindRadControl(c);  
                    if (sub != null) return sub;  
            return null;  
    1. Register the custom control in the \EditorDialogs\FileBrowser.ascx external dialog control:
    <%@ Register TagPrefix="custom" TagName="customControl" Src="~/UserControl.ascx"  %>   
    <custom:customControl ID="customControl1" runat="server" /> 

See Also

In this article