AjaxExtensions.BeginForm Method (AjaxHelper, String, RouteValueDictionary, AjaxOptions)

Writes an opening <form> tag to the response.

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


<ExtensionAttribute> _
Public Shared Function BeginForm ( _
    ajaxHelper As AjaxHelper, _
    actionName As String, _
    routeValues As RouteValueDictionary, _
    ajaxOptions As AjaxOptions _
) As MvcForm
public static MvcForm BeginForm(
    this AjaxHelper ajaxHelper,
    string actionName,
    RouteValueDictionary routeValues,
    AjaxOptions ajaxOptions
static MvcForm^ BeginForm(
    AjaxHelper^ ajaxHelper, 
    String^ actionName, 
    RouteValueDictionary^ routeValues, 
    AjaxOptions^ ajaxOptions


  • actionName
    Type: System.String
    The name of the action method that will handle the request.

Return Value

Type: System.Web.Mvc.Html.MvcForm
An opening <form> tag.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type AjaxHelper. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).


You can use this method in a using block. In that case, the method renders the closing </form> tag at the end of the using block. The form is submitted asynchronously by using JavaScript.

See Also


AjaxExtensions Class

BeginForm Overload

System.Web.Mvc.Ajax Namespace