Executing Script on a Reload

There are times when you want to perform a postback from a RadWindow object, and then when the window reloads, execute some client-side script. For example, when a window opens a Wizard that performs some action and then does a postback to the server, you may want to close the window automatically without requiring the user to explicitly close it. Another case is when the RadWindow performs some action via a postback which has an effect on the main page, and you want to force a reload of the main page so that the effect on the main page occurs immediately.

1. To execute the client-side script on a reload, first add the JavaScript to the dialog page:

   JavaScript

   //GetRadWindow obtains a reference to the hosting RadWindow"
   function GetRadWindow()
   {
       var oWindow = null;
       if (window.radWindow)
           oWindow = window.radWindow;
       else if (window.frameElement.radWindow)
           oWindow = window.frameElement.radWindow;
       return oWindow;
   }
   function CloseOnReload()
   {
       GetRadWindow().close();
   }
   function RefreshParentPage()
   {
       GetRadWindow().BrowserWindow.location.href = GetRadWindow().BrowserWindow.location.href;
   }
   

2. Add controls to trigger the postback:

   ASP.NET

   <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Do something and close" />
   <asp:Button ID="Button2" runat="server" OnClick="Button2_Click" Text="Change the main page" />
   

3. In the handlers that perform the server-side actions, you can use page's RegisterStartupScript collection to add a script that should be executed when the page is reloaded:

   C#

   private void Button1_Click(object sender, System.EventArgs e)
   {
       // perform the server-side actions here and then...
       ClientScript.RegisterStartupScript(Page.GetType(), "closeWindow", "<script type='text/javascript'>CloseOnReload()</script>");
   }
   private void Button2_Click(object sender, System.EventArgs e)
   {
       // perform the server-side actions here and then...
       ClientScript.RegisterStartupScript(Page.GetType(), "closeWindow", "<script type='text/javascript'>RefreshParentPage()</script>");
   }
   

   VB

   Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs)
       ClientScript.RegisterStartupScript(Page.GetType(), "closeWindow", "<script type='text/javascript'>CloseOnReload()</script>")
   End Sub
   Private Sub Button2_Click(ByVal sender As Object, ByVal e As System.EventArgs)
       ClientScript.RegisterStartupScript(Page.GetType(), "closeWindow", "<script type='text/javascript'>RefreshParentPage()</script>")
   End Sub
   

In general, outputting a JavaScript code from the code-behind is a general task that is not related to the RadWindow control - there are numerous resources on the Net that show how to do that. For example you can use the asp:scriptmanager's control RegisterStartupScript server method, or the ResponseScripts collection of RadAjaxManager. More information on the subject is also available in the following blog post: Executing JavaScript function from server-side code.