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SelectExtensions.DropDownListFor<TModel, TProperty> Method (HtmlHelper<TModel>, Expression<Func<TModel, TProperty>>, IEnumerable<SelectListItem>, String, IDictionary<String, Object>)

.NET Framework 4

Returns an HTML select element for each property in the object that is represented by the specified expression using the specified list items, option label, and HTML attributes.

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

public static MvcHtmlString DropDownListFor<TModel, TProperty>(
	this HtmlHelper<TModel> htmlHelper,
	Expression<Func<TModel, TProperty>> expression,
	IEnumerable<SelectListItem> selectList,
	string optionLabel,
	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.
selectList
Type: System.Collections.Generic.IEnumerable<SelectListItem>
A collection of SelectListItem objects that are used to populate the drop-down list.
optionLabel
Type: System.String
The text for a default empty item. This parameter can be null.
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 select element for each property in the object that is represented by the expression.

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).

ExceptionCondition
ArgumentNullException

The expression parameter is null.

The htmlAttributes parameter consists of an object that contains name/value pairs. The attributes that are specified in the name/value pairs depend on the HTML element that is being rendered. For example, for a select element, you might provide the following anonymous object:

new { id = "select1", size="8" }

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