InputExtensions.RadioButton Method (HtmlHelper, String, Object, Boolean)

Returns a radio button input element that is used to present mutually exclusive options.

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


<ExtensionAttribute> _
Public Shared Function RadioButton ( _
    htmlHelper As HtmlHelper, _
    name As String, _
    value As Object, _
    isChecked As Boolean _
) As MvcHtmlString
public static MvcHtmlString RadioButton(
    this HtmlHelper htmlHelper,
    string name,
    Object value,
    bool isChecked
static MvcHtmlString^ RadioButton(
    HtmlHelper^ htmlHelper, 
    String^ name, 
    Object^ value, 
    bool isChecked


  • value
    Type: System.Object
    If this radio button is selected, the value of the radio button that is submitted when the form is posted. If the value of the selected radio button in the ViewDataDictionary or the ModelStateDictionary object matches this value, this radio button is selected.
  • isChecked
    Type: System.Boolean
    true to select the radio button; otherwise, false.

Return Value

Type: System.Web.Mvc.MvcHtmlString
An input element whose type attribute is set to "radio".

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type HtmlHelper. 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).


Exception Condition

The name parameter is null reference (Nothing in Visual Basic) or empty.


The value parameter is null reference (Nothing in Visual Basic).


The difference between calling the RadioButton method and using an input element is that the RadioButton method is designed to make it easy to bind to view data or model data.

See Also


InputExtensions Class

RadioButton Overload

System.Web.Mvc.Html Namespace