ASP.NET

protected override void OnInit(EventArgs e)
{
    base.OnInit(e);


    //get the existing ScriptManager if it exists on the page
    private ScriptManager_AjaxManager = ScriptManager.GetCurrent(this.Page);

    if (_AjaxManager == null)
    {
        //create new ScriptManager and EnablePartialRendering or whatever
        _AjaxManager = new ScriptManager();
        _AjaxManager.EnablePartialRendering = true;
        _AjaxManager.EnableScriptLocalization = true;

        if (this.Page.Form != null)
        {
            //add the ScriptManager as the first control in the Page.Form
            //I don't think this actually matters, but I did it to be consistent with how you are supposed to place the ScriptManager when used declaritevly
            this.Page.Form.Controls.AddAt(0, _AjaxManager);
        }
    }
}

trilokharry wrote:

execute server side code in asp.net while using jquery

[System.Web.Services.WebMethod(EnableSession = true)]
       public static string DemoMethodInCodeBehind(string msg)
       {
         return "OK_" + msg;
       }

function demo()
{
    PageMethods.DemoMethodInCodeBehind('hello',OnGetMessageSuccess, OnGetMessageFailure);
}

  function OnGetMessageSuccess(result, userContext, methodName) 
{  
    alert("Success " + result);
}  

function OnGetMessageFailure(error, userContext, methodName) 
{  
        alert("Failed");
}

trilokharry wrote:

like some login form is opened by using jquery as model popup and how will be executed submit button click event.

<code>
protected void login_click(object sender, EventArgs e){
   .... code to validate credentials ......
   Session["LoggedIn"] = true;
   Response.Redirect("defaultpage.aspx");
}
</code>

<code>
protected void Page_Init(object sender, EventArgs e){
    if (!(bool)Session["LoggedIn"])
        Response.Redirect("login.aspx");
}
</code>

protected void login_clicked(object sender, EventArgs e){
   if (((ArrayList)Application["LoggedInUsers"]).Contains(txtUserName.text))
        // Show log in erorr
   else{
        ArrayList temp = Application["LoggedInUsers"];
        temp.Add(txtUserName.Text);
        Application["LoggedInUsers"] = temp;
        // redirect to default page
   }
}