HtmlHelperSelectExtensions.DropDownListFor Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Overloads
| DropDownListFor<TModel,TResult>(IHtmlHelper<TModel>, Expression<Func<TModel,TResult>>, IEnumerable<SelectListItem>) |
Returns a single-selection HTML <select> element for the |
| DropDownListFor<TModel,TResult>(IHtmlHelper<TModel>, Expression<Func<TModel,TResult>>, IEnumerable<SelectListItem>, Object) |
Returns a single-selection HTML <select> element for the |
| DropDownListFor<TModel,TResult>(IHtmlHelper<TModel>, Expression<Func<TModel,TResult>>, IEnumerable<SelectListItem>, String) |
Returns a single-selection HTML <select> element for the |
DropDownListFor<TModel,TResult>(IHtmlHelper<TModel>, Expression<Func<TModel,TResult>>, IEnumerable<SelectListItem>)
Returns a single-selection HTML <select> element for the expression. Adds
<option> elements based on selectList. Adds a "selected" attribute to an
<option> if its Value (if non-null) or
Text matches the first non-null value found in:
the ModelState entry with full name, or
the expression evaluated against Model.
See NameFor<TResult>(Expression<Func<TModel,TResult>>) for more information about a "full name".
public:
generic <typename TModel, typename TResult>
[System::Runtime::CompilerServices::Extension]
static Microsoft::AspNetCore::Html::IHtmlContent ^ DropDownListFor(Microsoft::AspNetCore::Mvc::Rendering::IHtmlHelper<TModel> ^ htmlHelper, System::Linq::Expressions::Expression<Func<TModel, TResult> ^> ^ expression, System::Collections::Generic::IEnumerable<Microsoft::AspNetCore::Mvc::Rendering::SelectListItem ^> ^ selectList);public static Microsoft.AspNetCore.Html.IHtmlContent DropDownListFor<TModel,TResult> (this Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel> htmlHelper, System.Linq.Expressions.Expression<Func<TModel,TResult>> expression, System.Collections.Generic.IEnumerable<Microsoft.AspNetCore.Mvc.Rendering.SelectListItem> selectList);static member DropDownListFor : Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<'Model> * System.Linq.Expressions.Expression<Func<'Model, 'Result>> * seq<Microsoft.AspNetCore.Mvc.Rendering.SelectListItem> -> Microsoft.AspNetCore.Html.IHtmlContent<Extension()>
Public Function DropDownListFor(Of TModel, TResult) (htmlHelper As IHtmlHelper(Of TModel), expression As Expression(Of Func(Of TModel, TResult)), selectList As IEnumerable(Of SelectListItem)) As IHtmlContentType Parameters
- TModel
The type of the model.
- TResult
The type of the expression result.
Parameters
- htmlHelper
- IHtmlHelper<TModel>
The IHtmlHelper<TModel> instance this method extends.
- expression
- Expression<Func<TModel,TResult>>
An expression to be evaluated against the current model.
- selectList
- IEnumerable<SelectListItem>
A collection of SelectListItem objects used to populate the <select> element with
<optgroup> and <option> elements. If null, uses the ViewData
entry with full name and that entry must be a collection of SelectListItem objects.
Returns
A new IHtmlContent containing the <select> element.
Remarks
Combines HtmlFieldPrefix and the string representation of the expression to set <select> element's "name" attribute. Sanitizes the string representation of the expression to set element's "id" attribute.
Applies to
DropDownListFor<TModel,TResult>(IHtmlHelper<TModel>, Expression<Func<TModel,TResult>>, IEnumerable<SelectListItem>, Object)
Returns a single-selection HTML <select> element for the expression. Adds
<option> elements based on selectList. Adds a "selected" attribute to an
<option> if its Value (if non-null) or
Text matches the first non-null value found in:
the ModelState entry with full name, or
the expression evaluated against Model.
See NameFor<TResult>(Expression<Func<TModel,TResult>>) for more information about a "full name".
public:
generic <typename TModel, typename TResult>
[System::Runtime::CompilerServices::Extension]
static Microsoft::AspNetCore::Html::IHtmlContent ^ DropDownListFor(Microsoft::AspNetCore::Mvc::Rendering::IHtmlHelper<TModel> ^ htmlHelper, System::Linq::Expressions::Expression<Func<TModel, TResult> ^> ^ expression, System::Collections::Generic::IEnumerable<Microsoft::AspNetCore::Mvc::Rendering::SelectListItem ^> ^ selectList, System::Object ^ htmlAttributes);public static Microsoft.AspNetCore.Html.IHtmlContent DropDownListFor<TModel,TResult> (this Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel> htmlHelper, System.Linq.Expressions.Expression<Func<TModel,TResult>> expression, System.Collections.Generic.IEnumerable<Microsoft.AspNetCore.Mvc.Rendering.SelectListItem> selectList, object htmlAttributes);static member DropDownListFor : Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<'Model> * System.Linq.Expressions.Expression<Func<'Model, 'Result>> * seq<Microsoft.AspNetCore.Mvc.Rendering.SelectListItem> * obj -> Microsoft.AspNetCore.Html.IHtmlContent<Extension()>
Public Function DropDownListFor(Of TModel, TResult) (htmlHelper As IHtmlHelper(Of TModel), expression As Expression(Of Func(Of TModel, TResult)), selectList As IEnumerable(Of SelectListItem), htmlAttributes As Object) As IHtmlContentType Parameters
- TModel
The type of the model.
- TResult
The type of the expression result.
Parameters
- htmlHelper
- IHtmlHelper<TModel>
The IHtmlHelper<TModel> instance this method extends.
- expression
- Expression<Func<TModel,TResult>>
An expression to be evaluated against the current model.
- selectList
- IEnumerable<SelectListItem>
A collection of SelectListItem objects used to populate the <select> element with
<optgroup> and <option> elements. If null, uses the ViewData
entry with full name and that entry must be a collection of SelectListItem objects.
- htmlAttributes
- Object
An Object that contains the HTML attributes for the <select> element. Alternatively, an IDictionary<TKey,TValue> instance containing the HTML attributes.
Returns
A new IHtmlContent containing the <select> element.
Remarks
Combines HtmlFieldPrefix and the string representation of the expression to set <select> element's "name" attribute. Sanitizes the string representation of the expression to set element's "id" attribute.
Applies to
DropDownListFor<TModel,TResult>(IHtmlHelper<TModel>, Expression<Func<TModel,TResult>>, IEnumerable<SelectListItem>, String)
Returns a single-selection HTML <select> element for the expression. Adds
<option> elements based on optionLabel and selectList. Adds a
"selected" attribute to an <option> if its Value (if non-null) or
Text matches the first non-null value found in:
the ModelState entry with full name, or
the expression evaluated against Model.
See NameFor<TResult>(Expression<Func<TModel,TResult>>) for more information about a "full name".
public:
generic <typename TModel, typename TResult>
[System::Runtime::CompilerServices::Extension]
static Microsoft::AspNetCore::Html::IHtmlContent ^ DropDownListFor(Microsoft::AspNetCore::Mvc::Rendering::IHtmlHelper<TModel> ^ htmlHelper, System::Linq::Expressions::Expression<Func<TModel, TResult> ^> ^ expression, System::Collections::Generic::IEnumerable<Microsoft::AspNetCore::Mvc::Rendering::SelectListItem ^> ^ selectList, System::String ^ optionLabel);public static Microsoft.AspNetCore.Html.IHtmlContent DropDownListFor<TModel,TResult> (this Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel> htmlHelper, System.Linq.Expressions.Expression<Func<TModel,TResult>> expression, System.Collections.Generic.IEnumerable<Microsoft.AspNetCore.Mvc.Rendering.SelectListItem> selectList, string optionLabel);static member DropDownListFor : Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<'Model> * System.Linq.Expressions.Expression<Func<'Model, 'Result>> * seq<Microsoft.AspNetCore.Mvc.Rendering.SelectListItem> * string -> Microsoft.AspNetCore.Html.IHtmlContent<Extension()>
Public Function DropDownListFor(Of TModel, TResult) (htmlHelper As IHtmlHelper(Of TModel), expression As Expression(Of Func(Of TModel, TResult)), selectList As IEnumerable(Of SelectListItem), optionLabel As String) As IHtmlContentType Parameters
- TModel
The type of the model.
- TResult
The type of the expression result.
Parameters
- htmlHelper
- IHtmlHelper<TModel>
The IHtmlHelper<TModel> instance this method extends.
- expression
- Expression<Func<TModel,TResult>>
An expression to be evaluated against the current model.
- selectList
- IEnumerable<SelectListItem>
A collection of SelectListItem objects used to populate the <select> element with
<optgroup> and <option> elements. If null, uses the ViewData
entry with full name and that entry must be a collection of SelectListItem objects.
- optionLabel
- String
The text for a default empty item. Does not include such an item if argument is null.
Returns
A new IHtmlContent containing the <select> element.
Remarks
Combines HtmlFieldPrefix and the string representation of the expression to set <select> element's "name" attribute. Sanitizes the string representation of the expression to set element's "id" attribute.