SelectExtensions::DropDownList Method
Returns a select element that lets users select one item.
Assembly: System.Web.Mvc (in System.Web.Mvc.dll)
| Name | Description | |
|---|---|---|
  | DropDownList(HtmlHelper^, String^) | Returns a single-selection select element using the specified HTML helper and the name of the form field. |
| DropDownList(HtmlHelper^, String^, IEnumerable<SelectListItem^>^) | Returns a single-selection select element using the specified HTML helper, the name of the form field, and the specified list items. |
| DropDownList(HtmlHelper^, String^, IEnumerable<SelectListItem^>^, IDictionary<String^, Object^>^) | Returns a single-selection select element using the specified HTML helper, the name of the form field, the specified list items, and the specified HTML attributes. |
| DropDownList(HtmlHelper^, String^, IEnumerable<SelectListItem^>^, Object^) | Returns a single-selection select element using the specified HTML helper, the name of the form field, the specified list items, and the specified HTML attributes. |
| DropDownList(HtmlHelper^, String^, IEnumerable<SelectListItem^>^, String^) | Returns a single-selection select element using the specified HTML helper, the name of the form field, the specified list items, and an option label. |
| DropDownList(HtmlHelper^, String^, IEnumerable<SelectListItem^>^, String^, IDictionary<String^, Object^>^) | Returns a single-selection select element using the specified HTML helper, the name of the form field, the specified list items, an option label, and the specified HTML attributes. |
| DropDownList(HtmlHelper^, String^, IEnumerable<SelectListItem^>^, String^, Object^) | Returns a single-selection select element using the specified HTML helper, the name of the form field, the specified list items, an option label, and the specified HTML attributes. |
| DropDownList(HtmlHelper^, String^, String^) | Returns a single-selection select element using the specified HTML helper, the name of the form field, and an option label. |
The DropDownList method renders an element that enables the user to select one item from a drop-down list. Each item in the list is a SelectListItem object.
The difference between calling the DropDownList method and using a select element is that the DropDownList method is designed to make it easy to bind to view data or model data.
SelectExtensions::DropDownList Method (HtmlHelper^, String^)
Returns a single-selection select element using the specified HTML helper and the name of the form field.
public: [ExtensionAttribute] static MvcHtmlString^ DropDownList( HtmlHelper^ htmlHelper, String^ name )
Parameters
- htmlHelper
-
Type:
System.Web.Mvc::HtmlHelper^
The HTML helper instance that this method extends.
- name
-
Type:
System::String^
The name of the form field to return.
| Exception | Condition |
|---|---|
| ArgumentException | The name parameter is null or empty. |
The DropDownList method renders an element that enables the user to select one item from a drop-down list. Each item in the list is a SelectListItem object.
The difference between calling the DropDownList method and using a select element is that the DropDownList method is designed to make it easy to bind to view data or model data.
SelectExtensions::DropDownList Method (HtmlHelper^, String^, IEnumerable<SelectListItem^>^)
Returns a single-selection select element using the specified HTML helper, the name of the form field, and the specified list items.
public: [ExtensionAttribute] static MvcHtmlString^ DropDownList( HtmlHelper^ htmlHelper, String^ name, IEnumerable<SelectListItem^>^ selectList )
Parameters
- htmlHelper
-
Type:
System.Web.Mvc::HtmlHelper^
The HTML helper instance that this method extends.
- name
-
Type:
System::String^
The name of the form field to return.
- selectList
-
Type:
System.Collections.Generic::IEnumerable<SelectListItem^>^
A collection of SelectListItem objects that are used to populate the drop-down list.
Return Value
Type: System.Web.Mvc::MvcHtmlString^An HTML select element with an option subelement for each item in the list.
| Exception | Condition |
|---|---|
| ArgumentException | The name parameter is null or empty. |
The DropDownList method renders an element that enables the user to select one item from a drop-down list. Each item in the list is a SelectListItem object.
The difference between calling the DropDownList method and using a select element is that the DropDownList method is designed to make it easy to bind to view data or model data.
SelectExtensions::DropDownList Method (HtmlHelper^, String^, IEnumerable<SelectListItem^>^, IDictionary<String^, Object^>^)
Returns a single-selection select element using the specified HTML helper, the name of the form field, the specified list items, and the specified HTML attributes.
public: [ExtensionAttribute] static MvcHtmlString^ DropDownList( HtmlHelper^ htmlHelper, String^ name, IEnumerable<SelectListItem^>^ selectList, IDictionary<String^, Object^>^ htmlAttributes )
Parameters
- htmlHelper
-
Type:
System.Web.Mvc::HtmlHelper^
The HTML helper instance that this method extends.
- name
-
Type:
System::String^
The name of the form field to return.
- selectList
-
Type:
System.Collections.Generic::IEnumerable<SelectListItem^>^
A collection of SelectListItem objects that are used to populate the drop-down list.
- htmlAttributes
-
Type:
System.Collections.Generic::IDictionary<String^, Object^>^
An object that contains the HTML attributes to set for the element.
Return Value
Type: System.Web.Mvc::MvcHtmlString^An HTML select element with an option subelement for each item in the list.
| Exception | Condition |
|---|---|
| ArgumentException | The name parameter is null or empty. |
The DropDownList method renders an element that enables the user to select one item from a drop-down list. Each item in the list is a SelectListItem object.
The difference between calling the DropDownList method and using a select element is that the DropDownList method is designed to make it easy to bind to view data or model data.
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:
SelectExtensions::DropDownList Method (HtmlHelper^, String^, IEnumerable<SelectListItem^>^, Object^)
Returns a single-selection select element using the specified HTML helper, the name of the form field, the specified list items, and the specified HTML attributes.
public: [ExtensionAttribute] static MvcHtmlString^ DropDownList( HtmlHelper^ htmlHelper, String^ name, IEnumerable<SelectListItem^>^ selectList, Object^ htmlAttributes )
Parameters
- htmlHelper
-
Type:
System.Web.Mvc::HtmlHelper^
The HTML helper instance that this method extends.
- name
-
Type:
System::String^
The name of the form field to return.
- selectList
-
Type:
System.Collections.Generic::IEnumerable<SelectListItem^>^
A collection of SelectListItem objects that are used to populate the drop-down list.
- htmlAttributes
-
Type:
System::Object^
An object that contains the HTML attributes to set for the element.
Return Value
Type: System.Web.Mvc::MvcHtmlString^An HTML select element with an option subelement for each item in the list.
| Exception | Condition |
|---|---|
| ArgumentException | The name parameter is null or empty. |
The DropDownList method renders an element that enables the user to select one item from a drop-down list. Each item in the list is a SelectListItem object.
The difference between calling the DropDownList method and using a select element is that the DropDownList method is designed to make it easy to bind to view data or model data.
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:
SelectExtensions::DropDownList Method (HtmlHelper^, String^, IEnumerable<SelectListItem^>^, String^)
Returns a single-selection select element using the specified HTML helper, the name of the form field, the specified list items, and an option label.
public: [ExtensionAttribute] static MvcHtmlString^ DropDownList( HtmlHelper^ htmlHelper, String^ name, IEnumerable<SelectListItem^>^ selectList, String^ optionLabel )
Parameters
- htmlHelper
-
Type:
System.Web.Mvc::HtmlHelper^
The HTML helper instance that this method extends.
- name
-
Type:
System::String^
The name of the form field to return.
- 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.
Return Value
Type: System.Web.Mvc::MvcHtmlString^An HTML select element with an option subelement for each item in the list.
| Exception | Condition |
|---|---|
| ArgumentException | The name parameter is null or empty. |
The DropDownList method renders an element that enables the user to select one item from a drop-down list. Each item in the list is a SelectListItem object.
The difference between calling the DropDownList method and using a select element is that the DropDownList method is designed to make it easy to bind to view data or model data.
SelectExtensions::DropDownList Method (HtmlHelper^, String^, IEnumerable<SelectListItem^>^, String^, IDictionary<String^, Object^>^)
Returns a single-selection select element using the specified HTML helper, the name of the form field, the specified list items, an option label, and the specified HTML attributes.
public: [ExtensionAttribute] static MvcHtmlString^ DropDownList( HtmlHelper^ htmlHelper, String^ name, IEnumerable<SelectListItem^>^ selectList, String^ optionLabel, IDictionary<String^, Object^>^ htmlAttributes )
Parameters
- htmlHelper
-
Type:
System.Web.Mvc::HtmlHelper^
The HTML helper instance that this method extends.
- name
-
Type:
System::String^
The name of the form field to return.
- 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^>^
An object that contains the HTML attributes to set for the element.
Return Value
Type: System.Web.Mvc::MvcHtmlString^An HTML select element with an option subelement for each item in the list.
| Exception | Condition |
|---|---|
| ArgumentException | The name parameter is null or empty. |
The DropDownList method renders an element that enables the user to select one item from a drop-down list. Each item in the list is a SelectListItem object.
The difference between calling the DropDownList method and using a select element is that the DropDownList method is designed to make it easy to bind to view data or model data.
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:
SelectExtensions::DropDownList Method (HtmlHelper^, String^, IEnumerable<SelectListItem^>^, String^, Object^)
Returns a single-selection select element using the specified HTML helper, the name of the form field, the specified list items, an option label, and the specified HTML attributes.
public: [ExtensionAttribute] static MvcHtmlString^ DropDownList( HtmlHelper^ htmlHelper, String^ name, IEnumerable<SelectListItem^>^ selectList, String^ optionLabel, Object^ htmlAttributes )
Parameters
- htmlHelper
-
Type:
System.Web.Mvc::HtmlHelper^
The HTML helper instance that this method extends.
- name
-
Type:
System::String^
The name of the form field to return.
- 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::Object^
An object that contains the HTML attributes to set for the element.
Return Value
Type: System.Web.Mvc::MvcHtmlString^An HTML select element with an option subelement for each item in the list.
| Exception | Condition |
|---|---|
| ArgumentException | The name parameter is null or empty. |
The DropDownList method renders an element that enables the user to select one item from a drop-down list. Each item in the list is a SelectListItem object.
The difference between calling the DropDownList method and using a select element is that the DropDownList method is designed to make it easy to bind to view data or model data.
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:
SelectExtensions::DropDownList Method (HtmlHelper^, String^, String^)
Returns a single-selection select element using the specified HTML helper, the name of the form field, and an option label.
public: [ExtensionAttribute] static MvcHtmlString^ DropDownList( HtmlHelper^ htmlHelper, String^ name, String^ optionLabel )
Parameters
- htmlHelper
-
Type:
System.Web.Mvc::HtmlHelper^
The HTML helper instance that this method extends.
- name
-
Type:
System::String^
The name of the form field to return.
- optionLabel
-
Type:
System::String^
The text for a default empty item. This parameter can be null.
Return Value
Type: System.Web.Mvc::MvcHtmlString^An HTML select element with an option subelement for each item in the list.
| Exception | Condition |
|---|---|
| ArgumentException | The name parameter is null or empty. |
The DropDownList method renders an element that enables the user to select one item from a drop-down list. Each item in the list is a SelectListItem object.
The difference between calling the DropDownList method and using a select element is that the DropDownList method is designed to make it easy to bind to view data or model data.