RadAjax for ASP.NET AJAX

RadAjaxManager and RadAjaxPanel both descend from RadAjaxControl that introduces the following methods:

• Alert: This convenient method executes a JavaScript alert() on the client. Alert() takes a single string parameter for text to be displayed in the alert.

  • C#
  • VB.NET

  CopyC#

  RadAjaxManager1.Alert("Please save your changes.");

  CopyVB.NET

  RadAjaxManager1.Alert("Please save your changes.")

• FocusControl: This method places focus on a specified control. FocusControl() takes a single parameter that can be the id of the control to focus on or an object reference to the control to focus on.

  • C#
  • VB.NET

  CopyC#

  RadAjaxManager1.FocusControl(Button1);

  CopyVB.NET

  RadAjaxManager1.FocusControl(Button1)

• GetAjaxEventReference: This method produces client side code that invokes the ajaxRequest() method.

  • C#
  • VB.NET

  CopyC#

  RadAjaxManager1.GetAjaxEventReference(Button1.ClientID);
  //... returns "$find("RadAjaxManager1").ajaxRequest("Button1");"

  CopyVB.NET

  RadAjaxManager1.GetAjaxEventReference(Button1.ClientID)
  '... returns "$find("RadAjaxManager1").ajaxRequest("Button1");"

• RaisePostBackEvent: This method triggers a server-side AjaxRequest event and allows you to pass a single string parameter to the event. AjaxRequest can also be triggered by the client-side ajaxRequest() function.

  • C#
  • VB.NET

  CopyC#

  protected void Button1_Click(object sender, EventArgs e)
  {    
      RadAjaxManager1.RaisePostBackEvent(DateTime.Now.ToString());
  }
  protected void RadAjaxManager1_AjaxRequest(object sender, Telerik.Web.UI.AjaxRequestEventArgs e)
  {    
      Label1.Text = e.Argument;
  }

  CopyVB.NET

  Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Button1.Click
      RadAjaxManager1.RaisePostBackEvent(DateTime.Now.ToString())
  End Sub
  Protected Sub RadAjaxManager1_AjaxRequest(ByVal sender As Object, ByVal e As Telerik.Web.UI.AjaxRequestEventArgs) Handles RadAjaxManager1.AjaxRequest
      Label1.Text = e.Argument
  End Sub

• Redirect: This method navigates the browser to another web page. The method passes a single string parameter which is the URL to navigate to.

  • C#
  • VB.NET

  CopyC#

  RadAjaxManager1.Redirect("http://www.telerik.com");

  CopyVB.NET

  RadAjaxManager1.Redirect("http://www.telerik.com")