InputExtensions.RadioButtonFor<TModel, TProperty> Method (HtmlHelper<TModel>, Expression<Func<TModel, TProperty>>, Object, IDictionary<String, Object>)

项目
02/21/2011

Returns a radio button input element for each property in the object that is represented by the specified expression, using the specified HTML attributes.

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

Syntax

'Declaration
<ExtensionAttribute> _
Public Shared Function RadioButtonFor(Of TModel, TProperty) ( _
    htmlHelper As HtmlHelper(Of TModel), _
    expression As Expression(Of Func(Of TModel, TProperty)), _
    value As Object, _
    htmlAttributes As IDictionary(Of String, Object) _
) As MvcHtmlString

public static MvcHtmlString RadioButtonFor<TModel, TProperty>(
    this HtmlHelper<TModel> htmlHelper,
    Expression<Func<TModel, TProperty>> expression,
    Object value,
    IDictionary<string, Object> htmlAttributes
)

[ExtensionAttribute]
public:
generic<typename TModel, typename TProperty>
static MvcHtmlString^ RadioButtonFor(
    HtmlHelper<TModel>^ htmlHelper, 
    Expression<Func<TModel, TProperty>^>^ expression, 
    Object^ value, 
    IDictionary<String^, Object^>^ htmlAttributes
)

Type Parameters

TModel
The type of the model.

TProperty
The type of the value.

Parameters

htmlHelper
Type: System.Web.Mvc.HtmlHelper<TModel>
The HTML helper instance that this method extends.

expression
Type: System.Linq.Expressions.Expression<Func<TModel, TProperty>>
An expression that identifies the object that contains the properties to render.

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.

htmlAttributes
Type: System.Collections.Generic.IDictionary<String, Object>
A dictionary that contains the HTML attributes to set for the element.

Return Value

Type: System.Web.Mvc.MvcHtmlString
An HTML input element whose type attribute is set to "radio" for each property in the object that is represented by the specified expression, using the specified HTML attributes.

Usage Note

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

Exceptions

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

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