HtmlHelper.RadioButton Method
Definition
Important
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Returns an <input> element of type "radio" for the specified expression
.
Adds a "value" attribute to the element containing the first non-null
value found in:
the value
parameter, or
the htmlAttributes
dictionary entry with key "value".
Adds a "checked" attribute to the element if value
matches the first non-null
value found in:
the htmlAttributes
dictionary entry with key "checked",
the ModelState entry with full name,
the ViewData entry with full name, or
the expression
evaluated against Model.
If isChecked
is non-null
, instead uses the first non-null
value found in:
the ModelState entry with full name, or
the isChecked
parameter.
See Name(String) for more information about a "full name".
public:
virtual Microsoft::AspNetCore::Html::IHtmlContent ^ RadioButton(System::String ^ expression, System::Object ^ value, Nullable<bool> isChecked, System::Object ^ htmlAttributes);
public Microsoft.AspNetCore.Html.IHtmlContent RadioButton (string expression, object value, bool? isChecked, object htmlAttributes);
abstract member RadioButton : string * obj * Nullable<bool> * obj -> Microsoft.AspNetCore.Html.IHtmlContent
override this.RadioButton : string * obj * Nullable<bool> * obj -> Microsoft.AspNetCore.Html.IHtmlContent
Public Function RadioButton (expression As String, value As Object, isChecked As Nullable(Of Boolean), htmlAttributes As Object) As IHtmlContent
Parameters
- expression
- String
Expression name, relative to the current model.
- value
- Object
If non-null
, value to include in the element. Must not be null
if
isChecked
is also null
and no "checked" entry exists in
htmlAttributes
.
If true
, radio button is initially selected. Must not be null
if
value
is also null
and no "checked" entry exists in
htmlAttributes
.
- htmlAttributes
- Object
An Object that contains the HTML attributes for the element. Alternatively, an IDictionary<TKey,TValue> instance containing the HTML attributes.
Returns
A new IHtmlContent containing the <input> element.