This is a workaround to do a redirect while using ASP.NET AJAX Framework. The traditional Response.Redirect method can not be used since it is not compatible with the .NET AJAX framework. StringBuilder sb = new StringBuilder(); sb.Append(“<script language=\”javascript\”>\n”); sb.Append(“function Redirect()\n”); sb.Append(“{\n”); sb.Append(” window.parent.location.href = \”" + ResolveUrl(myURL) + “\”;\n”); sb.Append(“}\n”); sb.Append(“</script>\n”); Page.ClientScript.RegisterClientScriptBlock(this.GetType(), “Redirect”, sb.ToString()); myBtn.Attributes.Add(“onclick”, [...]