AjaxOptions.OnBegin Property

Gets or sets the name of the JavaScript function to call immediately before the page is updated.

Namespace: System.Web.Mvc.Ajax
Assembly: System.Web.Mvc (in System.Web.Mvc.dll)

Syntax

public string OnBegin { get; set; }

public:
property String^ OnBegin {
    String^ get();
    void set(String^ value);
}

member OnBegin : string with get, set

Public Property OnBegin As String

The name of the JavaScript function to call before the page is updated.

The JavaScript function is called by ASP.NET MVC after the HttpRequest object is instantiated but before it is invoked.