HtmlSelect HtmlSelect HtmlSelect HtmlSelect Class

Definition

Allows programmatic access to the HTML <select> element on the server.

public ref class HtmlSelect : System::Web::UI::HtmlControls::HtmlContainerControl, System::Web::UI::IPostBackDataHandler
[System.Web.UI.ValidationProperty("Value")]
public class HtmlSelect : System.Web.UI.HtmlControls.HtmlContainerControl, System.Web.UI.IPostBackDataHandler
type HtmlSelect = class
    inherit HtmlContainerControl
    interface IPostBackDataHandler
    interface IParserAccessor
Public Class HtmlSelect
Inherits HtmlContainerControl
Implements IPostBackDataHandler
Inheritance
Attributes
Implements

Examples

The following code example demonstrates how to create an HtmlSelect control by explicitly declaring the items that appear in the control.


<%@ Page Language="C#" AutoEventWireup="True" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">

    void Button_Click (Object sender, EventArgs e)
    {
        
        Label1.Text = "You selected:";

        for (int i = 0; i <= Select1.Items.Count - 1; i++)
        {
           if (Select1.Items[i].Selected)
              Label1.Text += "<br /> &nbsp;&nbsp; -" + Select1.Items[i].Text;
        }

    }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >

<head>
    <title> HtmlSelect Example </title>
</head>
<body>
<form id="form1" runat="server">
    
    <h3> HtmlSelect Example </h3>

    Select items from the list: <br /><br />

    <select id="Select1" 
            multiple="true"
            runat="server">

        <option value="1" selected="selected"> Item 1 </option>
        <option value="2"> Item 2 </option>
        <option value="3"> Item 3 </option>
        <option value="4"> Item 4 </option>
        <option value="5"> Item 5 </option>
        <option value="6"> Item 6 </option>

    </select>
    <br /><br />

    <button id="Button1"
            onserverclick="Button_Click"
            runat="server">

        Submit

    </button>
    <br /><br />

    <asp:Label id="Label1"
         runat="server"/>

   </form>
</body>
</html>

<%@ Page Language="VB" AutoEventWireup="True" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">

    Sub Button_Click (sender As Object, e As EventArgs)
        
        Dim i As Integer

        Label1.Text = "You selected:"
        For i = 0 to Select1.Items.Count - 1
  
            If Select1.Items(i).Selected Then
               Label1.Text = Label1.Text & "<br /> &nbsp;&nbsp; -" _
                   & Select1.Items(i).Text
            End If         

        Next i

    End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >

<head>
    <title> HtmlSelect Example </title>
</head>
<body>
<form id="form1" runat="server">

    <h3> HtmlSelect Example </h3>

    Select items from the list: <br /><br />

    <select id="Select1" 
            multiple="true"
            runat="server">

        <option value="1" selected="selected"> Item 1 </option>
        <option value="2"> Item 2 </option>
        <option value="3"> Item 3 </option>
        <option value="4"> Item 4 </option>
        <option value="5"> Item 5 </option>
        <option value="6"> Item 6 </option>

    </select>
    <br /><br />

    <button id="Button1"
            onserverclick="Button_Click"
            runat="server">

        Submit

    </button>
    <br /><br />

    <asp:Label id="Label1"
         runat="server"/>

   </form>
</body>
</html>

The following code example demonstrates how to create an HtmlSelect control by binding the control to a data source.

<%@ Page Language="C#" AutoEventWireup="True" %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.SqlClient" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >

<head>
    <title> HtmlSelect Example </title>
<script runat="server">

      void Page_Load (Object sender, EventArgs e)
      {

        // Bind the HtmlSelect control to a data source when the page is initially loaded.
        if (!IsPostBack)
        {
      
           // Open a connection to the database and run the query.
           // Note that the connection string may vary depending on your
           // database server settings. 
           string ConnectString = "server=localhost;database=pubs;integrated security=SSPI";
           string QueryString = "select * from authors";

           SqlConnection myConnection = new SqlConnection(ConnectString);
           SqlDataAdapter myCommand = new SqlDataAdapter(QueryString, myConnection);

           // Create a dataset to store the query results.
           DataSet ds = new DataSet();
           myCommand.Fill(ds, "Authors");

           // Bind the HtmlSelect control to the data source.
           Select1.DataSource = ds;
           Select1.DataTextField = "au_fname";
           Select1.DataValueField = "au_fname";
           Select1.DataBind();
        }

      }

      void Button_Click (Object sender, EventArgs e)
      {
       
         // Display the selected items. 
         Label1.Text = "You selected:";

         for (int i=0; i<=Select1.Items.Count - 1; i++)
         {
            if (Select1.Items[i].Selected)
               Label1.Text += "<br /> &nbsp;&nbsp; - " + Select1.Items[i].Text;
         }

      }

   </script>

</head>

<body>

   <form id="form1" runat="server">

      <h3> HtmlSelect Example </h3>

      Select items from the list. <br />
      Use the Control or Shift key to select multiple items. <br /><br />

      <select id="Select1"
              multiple="true" 
              runat="server"/>

      <br /><br />

      <button id="Button1"
              onserverclick="Button_Click"
              runat="server">

         Submit

      </button>

      <br /><br />

      <asp:Label id="Label1"
           runat="server"/>

   </form>

</body>

</html>
<%@ Page Language="VB" AutoEventWireup="True" %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.SqlClient" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >

<head>
    <title> HtmlSelect Example </title>
<script runat="server">

      Sub Page_Load (sender As Object, e As EventArgs)
  
        ' Bind the HtmlSelect control to a data source when the page is initially loaded.
        If Not IsPostBack Then
        
           ' Open a connection to the database and run the query.
           ' Note that the connection string may vary depending on your
           ' database server settings.
           Dim ConnectString As String = "server=localhost;database=pubs;integrated security=SSPI"
           Dim QueryString As String = "select * from authors"

           Dim myConnection As SqlConnection = New SqlConnection(ConnectString)
           Dim myCommand As SqlDataAdapter = New SqlDataAdapter(QueryString, myConnection)

           ' Create a dataset to store the query results.
           Dim ds As DataSet = New DataSet()
           myCommand.Fill(ds, "Authors")

           ' Bind the HtmlSelect control to the data source.
           Select1.DataSource = ds
           Select1.DataTextField = "au_fname"
           Select1.DataValueField = "au_fname"
           Select1.DataBind()
        
        End If

      End Sub

      Sub Button_Click (sender As Object, e As EventArgs)
        
         Dim i As Integer

         Label1.Text = "You selected:"

         For i = 0 To Select1.Items.Count - 1
         
            If Select1.Items(i).Selected Then
               Label1.Text = Label1.Text & "<br /> &nbsp;&nbsp; - " & Select1.Items(i).Text
            End If

         Next i

      End Sub

   </script>

</head>

<body>

   <form id="form1" runat="server">

      <h3> HtmlSelect Example </h3>

      Select items from the list. <br />
      Use the Control or Shift key to select multiple items. <br /><br />

      <select id="Select1"
              multiple="true" 
              runat="server"/>

      <br /><br />

      <button id="Button1"
              onserverclick="Button_Click"
              runat="server">

         Submit

      </button>

      <br /><br />

      <asp:Label id="Label1"
           runat="server"/>

   </form>

</body>

</html>

The following code example demonstrates how to use the DataSourceID property to specify the data source for an HtmlSelect control. The DataSourceID property is set to the ID property of the SqlDataSource control used to retrieve the data. When the page is loaded, the HtmlSelect control automatically binds to the data source specified by the SqlDataSource control and the data is displayed to the user.

<%@ page language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>HtmlSelect.DataSourceID</title>
</head>
<body>
<form id="Form1" runat="server">
  <div>

    <h3> HtmlSelect.DataSourceID Example </h3>

    <p>Select an item from the list</p>

    <select id="Select1"
      name="Select1"
      datasourceid="SqlDataSource1"
      datatextfield="ProductName"
      runat="server">
    </select>

    <asp:sqldatasource id="SqlDataSource1"          
      connectionstring="workstation id=localhost;integrated security=SSPI;initial catalog=Northwind"
      selectcommand="SELECT * FROM [Products] Where ProductID <= 5"
      runat="server">
    </asp:sqldatasource>

  </div>
</form>
</body>
</html>
<%@ page language="VB" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>HtmlSelect.DataSourceID</title>
</head>
<body>
<form id="Form1" runat="server">
  <div>

    <h3> HtmlSelect.DataSourceID Example </h3>

    <p>Select an item from the list</p>

    <select id="Select1"
      name="Select1"
      datasourceid="SqlDataSource1"
      datatextfield="ProductName"
      runat="server">
    </select>

    <asp:sqldatasource id="SqlDataSource1"          
      connectionstring="workstation id=localhost;integrated security=SSPI;initial catalog=Northwind"
      selectcommand="SELECT * FROM [Products] Where ProductID <= 5"
      runat="server">
    </asp:sqldatasource>

  </div>
</form>
</body>
</html>

Remarks

Use the HtmlSelect control to create a selection box. Specify item listings in the control by placing HTML <option> elements between the opening and closing <select> tags. Each item is represented by a System.Web.UI.WebControls.ListItem object. To specify the text that is displayed for each item in the control, you can set the ListItem.Text property of the item, or simply place text between the opening and closing <option> tags. By setting the ListItem.Value property of the item, you can associate a value with the item that is different from the text. To select an item from the list by default, set the ListItem.Selected property of the item to true.

You can control the appearance and behavior of the HtmlSelect control by setting the Size and Multiple properties. The Size property specifies the height (in rows) of the control. The Multiple property specifies whether more than one item can be concurrently selected in the HtmlSelect control.

By default, the HtmlSelect control is displayed as a drop-down list box. If you allow multiple selections (by setting the Multiple property to true) or specify a height greater than one row (by setting the Size property to a value greater than 1), the control is displayed as a list box.

To determine the selected item in a single-selection HtmlSelect control, use the SelectedIndex property to get the index of the selected item. You can then use this value to retrieve the item from the Items collection.

To determine the selected items from an HtmlSelect control that allows multiple selections, iterate through the Items collection and test the ListItem.Selected property of each item.

The HtmlSelect class provides two properties to support data binding. To bind data to any object that implements the System.Collections.IEnumerable interface (such as System.Data.DataView, System.Collections.ArrayList, and System.Collections.Generic.List<T>), or the IListSource interface, use the DataSource property to specify the data source to bind to. When you set the DataSource property, you must manually write the code to perform the data binding. To automatically bind an HtmlSelect control to a data source represented by a data source control, use the DataSourceID property and set its value to the ID property of the data source control to use. When you set the DataSourceID property, the HtmlSelect control automatically binds to the specified data source control. Therefore, you do not need to explicitly call the DataBind method.

You can also specify which fields in the data source bind to the ListItem.Text and ListItem.Value properties of an item in the control by setting the DataTextField and DataValueField properties, respectively. If the data source contains multiple sources of data, use the DataMember property to specify the specific source to bind to the control. For example, if you have a System.Data.DataSet object with multiple tables, you must specify which table to bind to the control with the DataMember property.

For a list of initial property values for an instance of HtmlSelect, see the HtmlSelect constructor.

Constructors

HtmlSelect() HtmlSelect() HtmlSelect() HtmlSelect()

Initializes a new instance of the HtmlSelect class.

Properties

Adapter Adapter Adapter Adapter

Gets the browser-specific adapter for the control.

(Inherited from Control)
AppRelativeTemplateSourceDirectory AppRelativeTemplateSourceDirectory AppRelativeTemplateSourceDirectory AppRelativeTemplateSourceDirectory

Gets or sets the application-relative virtual directory of the Page or UserControl object that contains this control.

(Inherited from Control)
Attributes Attributes Attributes Attributes

Gets a collection of all attribute name and value pairs expressed on a server control tag within the ASP.NET page.

(Inherited from HtmlControl)
BindingContainer BindingContainer BindingContainer BindingContainer

Gets the control that contains this control's data binding.

(Inherited from Control)
ChildControlsCreated ChildControlsCreated ChildControlsCreated ChildControlsCreated

Gets a value that indicates whether the server control's child controls have been created.

(Inherited from Control)
ClientID ClientID ClientID ClientID

Gets the control ID for HTML markup that is generated by ASP.NET.

(Inherited from Control)
ClientIDMode ClientIDMode ClientIDMode ClientIDMode

Gets or sets the algorithm that is used to generate the value of the ClientID property.

(Inherited from Control)
ClientIDSeparator ClientIDSeparator ClientIDSeparator ClientIDSeparator

Gets a character value representing the separator character used in the ClientID property.

(Inherited from Control)
Context Context Context Context

Gets the HttpContext object associated with the server control for the current Web request.

(Inherited from Control)
Controls Controls Controls Controls

Gets a ControlCollection object that represents the child controls for a specified server control in the UI hierarchy.

(Inherited from Control)
DataItemContainer DataItemContainer DataItemContainer DataItemContainer

Gets a reference to the naming container if the naming container implements IDataItemContainer.

(Inherited from Control)
DataKeysContainer DataKeysContainer DataKeysContainer DataKeysContainer

Gets a reference to the naming container if the naming container implements IDataKeysControl.

(Inherited from Control)
DataMember DataMember DataMember DataMember

Gets or sets the set of data to bind to the HtmlSelect control from a DataSource property with multiple sets of data.

DataSource DataSource DataSource DataSource

Gets or sets the source of information to bind to the HtmlSelect control.

DataSourceID DataSourceID DataSourceID DataSourceID

Gets or sets the ID property of the data source control that the HtmlSelect control should use to retrieve its data source.

DataTextField DataTextField DataTextField DataTextField

Gets or sets the field from the data source to bind to the Text property of each item in the HtmlSelect control.

DataValueField DataValueField DataValueField DataValueField

Gets or sets the field from the data source to bind to the Value property of each item in the HtmlSelect control.

DesignMode DesignMode DesignMode DesignMode

Gets a value indicating whether a control is being used on a design surface.

(Inherited from Control)
Disabled Disabled Disabled Disabled

Gets or sets a value indicating whether the HTML server control is disabled.

(Inherited from HtmlControl)
EnableTheming EnableTheming EnableTheming EnableTheming

Gets or sets a value indicating whether themes apply to this control.

(Inherited from Control)
EnableViewState EnableViewState EnableViewState EnableViewState

Gets or sets a value indicating whether the server control persists its view state, and the view state of any child controls it contains, to the requesting client.

(Inherited from Control)
Events Events Events Events

Gets a list of event handler delegates for the control. This property is read-only.

(Inherited from Control)
HasChildViewState HasChildViewState HasChildViewState HasChildViewState

Gets a value indicating whether the current server control's child controls have any saved view-state settings.

(Inherited from Control)
IControlBuilderAccessor.ControlBuilder IControlBuilderAccessor.ControlBuilder IControlBuilderAccessor.ControlBuilder IControlBuilderAccessor.ControlBuilder

For a description of this member, see ControlBuilder.

(Inherited from Control)
IControlDesignerAccessor.UserData IControlDesignerAccessor.UserData IControlDesignerAccessor.UserData IControlDesignerAccessor.UserData

For a description of this member, see UserData.

(Inherited from Control)
ID ID ID ID

Gets or sets the programmatic identifier assigned to the server control.

(Inherited from Control)
IDataBindingsAccessor.DataBindings IDataBindingsAccessor.DataBindings IDataBindingsAccessor.DataBindings IDataBindingsAccessor.DataBindings

For a description of this member, see DataBindings.

(Inherited from Control)
IDataBindingsAccessor.HasDataBindings IDataBindingsAccessor.HasDataBindings IDataBindingsAccessor.HasDataBindings IDataBindingsAccessor.HasDataBindings

For a description of this member, see HasDataBindings.

(Inherited from Control)
IdSeparator IdSeparator IdSeparator IdSeparator

Gets the character used to separate control identifiers.

(Inherited from Control)
IExpressionsAccessor.Expressions IExpressionsAccessor.Expressions IExpressionsAccessor.Expressions IExpressionsAccessor.Expressions

For a description of this member, see Expressions.

(Inherited from Control)
IExpressionsAccessor.HasExpressions IExpressionsAccessor.HasExpressions IExpressionsAccessor.HasExpressions IExpressionsAccessor.HasExpressions

For a description of this member, see HasExpressions.

(Inherited from Control)
InnerHtml InnerHtml InnerHtml InnerHtml

Gets or sets the content between the opening and closing tags of the control without automatically converting special characters to their equivalent HTML entities. This property is not supported for this control.

InnerText InnerText InnerText InnerText

Gets or sets the content between the opening and closing tags of the control with automatic conversion of special characters to their equivalent HTML entities. This property is not supported for this control.

IsBoundUsingDataSourceID IsBoundUsingDataSourceID IsBoundUsingDataSourceID IsBoundUsingDataSourceID

Gets a value indicating whether a DataSourceID property is defined for the HtmlSelect control.

IsChildControlStateCleared IsChildControlStateCleared IsChildControlStateCleared IsChildControlStateCleared

Gets a value indicating whether controls contained within this control have control state.

(Inherited from Control)
IsTrackingViewState IsTrackingViewState IsTrackingViewState IsTrackingViewState

Gets a value that indicates whether the server control is saving changes to its view state.

(Inherited from Control)
IsViewStateEnabled IsViewStateEnabled IsViewStateEnabled IsViewStateEnabled

Gets a value indicating whether view state is enabled for this control.

(Inherited from Control)
Items Items Items Items

Gets a collection that contains the items listed in an HtmlSelect control.

LoadViewStateByID LoadViewStateByID LoadViewStateByID LoadViewStateByID

Gets a value indicating whether the control participates in loading its view state by ID instead of index.

(Inherited from Control)
Multiple Multiple Multiple Multiple

Gets or sets a value indicating whether multiple items can be selected concurrently in the HtmlSelect control.

Name Name Name Name

Gets or sets the unique identifier name associated with the HtmlSelect control.

NamingContainer NamingContainer NamingContainer NamingContainer

Gets a reference to the server control's naming container, which creates a unique namespace for differentiating between server controls with the same ID property value.

(Inherited from Control)
Page Page Page Page

Gets a reference to the Page instance that contains the server control.

(Inherited from Control)
Parent Parent Parent Parent

Gets a reference to the server control's parent control in the page control hierarchy.

(Inherited from Control)
RenderingCompatibility RenderingCompatibility RenderingCompatibility RenderingCompatibility

Gets a value that specifies the ASP.NET version that rendered HTML will be compatible with.

(Inherited from Control)
RequiresDataBinding RequiresDataBinding RequiresDataBinding RequiresDataBinding

Gets or sets a value indicating whether the HtmlSelect control needs to bind to its specified data source.

SelectedIndex SelectedIndex SelectedIndex SelectedIndex

Gets or sets the ordinal index of the selected item in an HtmlSelect control.

SelectedIndices SelectedIndices SelectedIndices SelectedIndices

Gets a collection that contains the zero-based indexes of all currently selected items in the HtmlSelect control.

Site Site Site Site

Gets information about the container that hosts the current control when rendered on a design surface.

(Inherited from Control)
Size Size Size Size

Gets or sets the height (in rows) of the HtmlSelect control.

SkinID SkinID SkinID SkinID

Gets or sets the skin to apply to the control.

(Inherited from Control)
Style Style Style Style

Gets a collection of all cascading style sheet (CSS) properties applied to a specified HTML server control in the ASP.NET file.

(Inherited from HtmlControl)
TagName TagName TagName TagName

Gets the element name of a tag that contains a runat=server attribute and value pair.

(Inherited from HtmlControl)
TemplateControl TemplateControl TemplateControl TemplateControl

Gets or sets a reference to the template that contains this control.

(Inherited from Control)
TemplateSourceDirectory TemplateSourceDirectory TemplateSourceDirectory TemplateSourceDirectory

Gets the virtual directory of the Page or UserControl that contains the current server control.

(Inherited from Control)
UniqueID UniqueID UniqueID UniqueID

Gets the unique, hierarchically qualified identifier for the server control.

(Inherited from Control)
ValidateRequestMode ValidateRequestMode ValidateRequestMode ValidateRequestMode

Gets or sets a value that indicates whether the control checks client input from the browser for potentially dangerous values.

(Inherited from Control)
Value Value Value Value

Gets the value of the selected item in the HtmlSelect control or sets the SelectedIndex property of the control to the index of the first item in the list with the specified value.

ViewState ViewState ViewState ViewState

Gets a dictionary of state information that allows you to save and restore the view state of a server control across multiple requests for the same page.

(Inherited from Control)
ViewStateIgnoresCase ViewStateIgnoresCase ViewStateIgnoresCase ViewStateIgnoresCase

Gets a value that indicates whether the HtmlControl view state is case-sensitive.

(Inherited from HtmlControl)
ViewStateMode ViewStateMode ViewStateMode ViewStateMode

Gets or sets the view-state mode of this control.

(Inherited from Control)
Visible Visible Visible Visible

Gets or sets a value that indicates whether a server control is rendered as UI on the page.

(Inherited from Control)

Methods

AddedControl(Control, Int32) AddedControl(Control, Int32) AddedControl(Control, Int32) AddedControl(Control, Int32)

Called after a child control is added to the Controls collection of the Control object.

(Inherited from Control)
AddParsedSubObject(Object) AddParsedSubObject(Object) AddParsedSubObject(Object) AddParsedSubObject(Object)

Adds a parsed child control to the HtmlSelect control.

ApplyStyleSheetSkin(Page) ApplyStyleSheetSkin(Page) ApplyStyleSheetSkin(Page) ApplyStyleSheetSkin(Page)

Applies the style properties defined in the page style sheet to the control.

(Inherited from Control)
BeginRenderTracing(TextWriter, Object) BeginRenderTracing(TextWriter, Object) BeginRenderTracing(TextWriter, Object) BeginRenderTracing(TextWriter, Object)

Begins design-time tracing of rendering data.

(Inherited from Control)
BuildProfileTree(String, Boolean) BuildProfileTree(String, Boolean) BuildProfileTree(String, Boolean) BuildProfileTree(String, Boolean)

Gathers information about the server control and delivers it to the Trace property to be displayed when tracing is enabled for the page.

(Inherited from Control)
ClearCachedClientID() ClearCachedClientID() ClearCachedClientID() ClearCachedClientID()

Sets the cached ClientID value to null.

(Inherited from Control)
ClearChildControlState() ClearChildControlState() ClearChildControlState() ClearChildControlState()

Deletes the control-state information for the server control's child controls.

(Inherited from Control)
ClearChildState() ClearChildState() ClearChildState() ClearChildState()

Deletes the view-state and control-state information for all the server control's child controls.

(Inherited from Control)
ClearChildViewState() ClearChildViewState() ClearChildViewState() ClearChildViewState()

Deletes the view-state information for all the server control's child controls.

(Inherited from Control)
ClearEffectiveClientIDMode() ClearEffectiveClientIDMode() ClearEffectiveClientIDMode() ClearEffectiveClientIDMode()

Sets the ClientIDMode property of the current control instance and of any child controls to Inherit.

(Inherited from Control)
ClearSelection() ClearSelection() ClearSelection() ClearSelection()

Clears the list selection of the HtmlSelect control and sets the Selected property of all items to false.

CreateChildControls() CreateChildControls() CreateChildControls() CreateChildControls()

Called by the ASP.NET page framework to notify server controls that use composition-based implementation to create any child controls they contain in preparation for posting back or rendering.

(Inherited from Control)
CreateControlCollection() CreateControlCollection() CreateControlCollection() CreateControlCollection()

Creates an EmptyControlCollection object for the HtmlSelect control.

DataBind() DataBind() DataBind() DataBind()

Binds a data source to the invoked server control and all its child controls.

(Inherited from Control)
DataBind(Boolean) DataBind(Boolean) DataBind(Boolean) DataBind(Boolean)

Binds a data source to the invoked server control and all its child controls with an option to raise the DataBinding event.

(Inherited from Control)
DataBindChildren() DataBindChildren() DataBindChildren() DataBindChildren()

Binds a data source to the server control's child controls.

(Inherited from Control)
Dispose() Dispose() Dispose() Dispose()

Enables a server control to perform final clean up before it is released from memory.

(Inherited from Control)
EndRenderTracing(TextWriter, Object) EndRenderTracing(TextWriter, Object) EndRenderTracing(TextWriter, Object) EndRenderTracing(TextWriter, Object)

Ends design-time tracing of rendering data.

(Inherited from Control)
EnsureChildControls() EnsureChildControls() EnsureChildControls() EnsureChildControls()

Determines whether the server control contains child controls. If it does not, it creates child controls.

(Inherited from Control)
EnsureDataBound() EnsureDataBound() EnsureDataBound() EnsureDataBound()

Verifies that the HtmlSelect control requires data binding and that a valid data source control is specified before calling the DataBind() method.

EnsureID() EnsureID() EnsureID() EnsureID()

Creates an identifier for controls that do not have an identifier assigned.

(Inherited from Control)
Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Determines whether the specified object is equal to the current object.

(Inherited from Object)
FindControl(String) FindControl(String) FindControl(String) FindControl(String)

Searches the current naming container for a server control with the specified id parameter.

(Inherited from Control)
FindControl(String, Int32) FindControl(String, Int32) FindControl(String, Int32) FindControl(String, Int32)

Searches the current naming container for a server control with the specified id and an integer, specified in the pathOffset parameter, which aids in the search. You should not override this version of the FindControl method.

(Inherited from Control)
Focus() Focus() Focus() Focus()

Sets input focus to a control.

(Inherited from Control)
GetAttribute(String) GetAttribute(String) GetAttribute(String) GetAttribute(String)

Gets the value of the named attribute on the HtmlControl control.

(Inherited from HtmlControl)
GetData() GetData() GetData() GetData()

Gets an IEnumerable object that represents the data source that is bound to the HtmlSelect control.

GetDesignModeState() GetDesignModeState() GetDesignModeState() GetDesignModeState()

Gets design-time data for a control.

(Inherited from Control)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Serves as the default hash function.

(Inherited from Object)
GetRouteUrl(Object) GetRouteUrl(Object) GetRouteUrl(Object) GetRouteUrl(Object)

Gets the URL that corresponds to a set of route parameters.

(Inherited from Control)
GetRouteUrl(RouteValueDictionary) GetRouteUrl(RouteValueDictionary) GetRouteUrl(RouteValueDictionary) GetRouteUrl(RouteValueDictionary)

Gets the URL that corresponds to a set of route parameters.

(Inherited from Control)
GetRouteUrl(String, Object) GetRouteUrl(String, Object) GetRouteUrl(String, Object) GetRouteUrl(String, Object)

Gets the URL that corresponds to a set of route parameters and a route name.

(Inherited from Control)
GetRouteUrl(String, RouteValueDictionary) GetRouteUrl(String, RouteValueDictionary) GetRouteUrl(String, RouteValueDictionary) GetRouteUrl(String, RouteValueDictionary)

Gets the URL that corresponds to a set of route parameters and a route name.

(Inherited from Control)
GetType() GetType() GetType() GetType()

Gets the Type of the current instance.

(Inherited from Object)
GetUniqueIDRelativeTo(Control) GetUniqueIDRelativeTo(Control) GetUniqueIDRelativeTo(Control) GetUniqueIDRelativeTo(Control)

Returns the prefixed portion of the UniqueID property of the specified control.

(Inherited from Control)
HasControls() HasControls() HasControls() HasControls()

Determines if the server control contains any child controls.

(Inherited from Control)
HasEvents() HasEvents() HasEvents() HasEvents()

Returns a value indicating whether events are registered for the control or any child controls.

(Inherited from Control)
IsLiteralContent() IsLiteralContent() IsLiteralContent() IsLiteralContent()

Determines if the server control holds only literal content.

(Inherited from Control)
LoadControlState(Object) LoadControlState(Object) LoadControlState(Object) LoadControlState(Object)

Restores control-state information from a previous page request that was saved by the SaveControlState() method.

(Inherited from Control)
LoadPostData(String, NameValueCollection) LoadPostData(String, NameValueCollection) LoadPostData(String, NameValueCollection) LoadPostData(String, NameValueCollection)

Processes the postback data for the HtmlSelect control.

LoadViewState(Object) LoadViewState(Object) LoadViewState(Object) LoadViewState(Object)

Restores the HtmlSelect control's view state information from a previous page request that was saved by the SaveViewState() method.

MapPathSecure(String) MapPathSecure(String) MapPathSecure(String) MapPathSecure(String)

Retrieves the physical path that a virtual path, either absolute or relative, maps to.

(Inherited from Control)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
OnBubbleEvent(Object, EventArgs) OnBubbleEvent(Object, EventArgs) OnBubbleEvent(Object, EventArgs) OnBubbleEvent(Object, EventArgs)

Determines whether the event for the server control is passed up the page's UI server control hierarchy.

(Inherited from Control)
OnDataBinding(EventArgs) OnDataBinding(EventArgs) OnDataBinding(EventArgs) OnDataBinding(EventArgs)

Raises the DataBinding event of an HtmlSelect control.

OnDataPropertyChanged() OnDataPropertyChanged() OnDataPropertyChanged() OnDataPropertyChanged()

Invoked when the DataSource, DataMember, or DataSourceID property is changed.

OnDataSourceViewChanged(Object, EventArgs) OnDataSourceViewChanged(Object, EventArgs) OnDataSourceViewChanged(Object, EventArgs) OnDataSourceViewChanged(Object, EventArgs)

Invoked when the DataSource, DataMember, or DataSourceID property is changed.

OnInit(EventArgs) OnInit(EventArgs) OnInit(EventArgs) OnInit(EventArgs)

Raises the Init event for the HtmlSelect control.

OnLoad(EventArgs) OnLoad(EventArgs) OnLoad(EventArgs) OnLoad(EventArgs)

Raises the Load event for the HtmlSelect control.

OnPreRender(EventArgs) OnPreRender(EventArgs) OnPreRender(EventArgs) OnPreRender(EventArgs)

Raises the PreRender event for the HtmlSelect control.

OnServerChange(EventArgs) OnServerChange(EventArgs) OnServerChange(EventArgs) OnServerChange(EventArgs)

Raises the ServerChange event of the HtmlSelect control. This allows you to provide a custom handler for the event.

OnUnload(EventArgs) OnUnload(EventArgs) OnUnload(EventArgs) OnUnload(EventArgs)

Raises the Unload event.

(Inherited from Control)
OpenFile(String) OpenFile(String) OpenFile(String) OpenFile(String)

Gets a Stream used to read a file.

(Inherited from Control)
RaiseBubbleEvent(Object, EventArgs) RaiseBubbleEvent(Object, EventArgs) RaiseBubbleEvent(Object, EventArgs) RaiseBubbleEvent(Object, EventArgs)

Assigns any sources of the event and its information to the control's parent.

(Inherited from Control)
RaisePostDataChangedEvent() RaisePostDataChangedEvent() RaisePostDataChangedEvent() RaisePostDataChangedEvent()

Calls the OnServerChange(EventArgs) method to signal the HtmlSelect control that the state of the control has changed.

RemovedControl(Control) RemovedControl(Control) RemovedControl(Control) RemovedControl(Control)

Called after a child control is removed from the Controls collection of the Control object.

(Inherited from Control)
Render(HtmlTextWriter) Render(HtmlTextWriter) Render(HtmlTextWriter) Render(HtmlTextWriter)

Renders the HtmlContainerControl control to the specified HtmlTextWriter object.

(Inherited from HtmlContainerControl)
RenderAttributes(HtmlTextWriter) RenderAttributes(HtmlTextWriter) RenderAttributes(HtmlTextWriter) RenderAttributes(HtmlTextWriter)

Renders the HtmlSelect control's attributes to the specified HtmlTextWriter object.

RenderBeginTag(HtmlTextWriter) RenderBeginTag(HtmlTextWriter) RenderBeginTag(HtmlTextWriter) RenderBeginTag(HtmlTextWriter)

Renders the opening HTML tag of the control into the specified HtmlTextWriter object.

(Inherited from HtmlControl)
RenderChildren(HtmlTextWriter) RenderChildren(HtmlTextWriter) RenderChildren(HtmlTextWriter) RenderChildren(HtmlTextWriter)

Renders the HtmlSelect control's child controls to the specified HtmlTextWriter object.

RenderControl(HtmlTextWriter) RenderControl(HtmlTextWriter) RenderControl(HtmlTextWriter) RenderControl(HtmlTextWriter)

Outputs server control content to a provided HtmlTextWriter object and stores tracing information about the control if tracing is enabled.

(Inherited from Control)
RenderControl(HtmlTextWriter, ControlAdapter) RenderControl(HtmlTextWriter, ControlAdapter) RenderControl(HtmlTextWriter, ControlAdapter) RenderControl(HtmlTextWriter, ControlAdapter)

Outputs server control content to a provided HtmlTextWriter object using a provided ControlAdapter object.

(Inherited from Control)
RenderEndTag(HtmlTextWriter) RenderEndTag(HtmlTextWriter) RenderEndTag(HtmlTextWriter) RenderEndTag(HtmlTextWriter)

Renders the closing tag for the HtmlContainerControl control to the specified HtmlTextWriter object.

(Inherited from HtmlContainerControl)
ResolveAdapter() ResolveAdapter() ResolveAdapter() ResolveAdapter()

Gets the control adapter responsible for rendering the specified control.

(Inherited from Control)
ResolveClientUrl(String) ResolveClientUrl(String) ResolveClientUrl(String) ResolveClientUrl(String)

Gets a URL that can be used by the browser.

(Inherited from Control)
ResolveUrl(String) ResolveUrl(String) ResolveUrl(String) ResolveUrl(String)

Converts a URL into one that is usable on the requesting client.

(Inherited from Control)
SaveControlState() SaveControlState() SaveControlState() SaveControlState()

Saves any server control state changes that have occurred since the time the page was posted back to the server.

(Inherited from Control)
SaveViewState() SaveViewState() SaveViewState() SaveViewState()

Saves any HtmlSelect control view state changes that have occurred since the page was posted back to the server.

Select(Int32[]) Select(Int32[]) Select(Int32[]) Select(Int32[])

Selects multiple items of the HtmlSelect control's Items collection.

SetAttribute(String, String) SetAttribute(String, String) SetAttribute(String, String) SetAttribute(String, String)

Sets the value of the named attribute on the HtmlControl control.

(Inherited from HtmlControl)
SetDesignModeState(IDictionary) SetDesignModeState(IDictionary) SetDesignModeState(IDictionary) SetDesignModeState(IDictionary)

Sets design-time data for a control.

(Inherited from Control)
SetRenderMethodDelegate(RenderMethod) SetRenderMethodDelegate(RenderMethod) SetRenderMethodDelegate(RenderMethod) SetRenderMethodDelegate(RenderMethod)

Assigns an event handler delegate to render the server control and its content into its parent control.

(Inherited from Control)
SetTraceData(Object, Object) SetTraceData(Object, Object) SetTraceData(Object, Object) SetTraceData(Object, Object)

Sets trace data for design-time tracing of rendering data, using the trace data key and the trace data value.

(Inherited from Control)
SetTraceData(Object, Object, Object) SetTraceData(Object, Object, Object) SetTraceData(Object, Object, Object) SetTraceData(Object, Object, Object)

Sets trace data for design-time tracing of rendering data, using the traced object, the trace data key, and the trace data value.

(Inherited from Control)
ToString() ToString() ToString() ToString()

Returns a string that represents the current object.

(Inherited from Object)
TrackViewState() TrackViewState() TrackViewState() TrackViewState()

Tracks view state changes to the HtmlSelect control so the changes can be stored in the control's StateBag object. This object is accessible through the ViewState property.

Events

DataBinding DataBinding DataBinding DataBinding

Occurs when the server control binds to a data source.

(Inherited from Control)
Disposed Disposed Disposed Disposed

Occurs when a server control is released from memory, which is the last stage of the server control lifecycle when an ASP.NET page is requested.

(Inherited from Control)
Init Init Init Init

Occurs when the server control is initialized, which is the first step in its lifecycle.

(Inherited from Control)
Load Load Load Load

Occurs when the server control is loaded into the Page object.

(Inherited from Control)
PreRender PreRender PreRender PreRender

Occurs after the Control object is loaded but prior to rendering.

(Inherited from Control)
ServerChange ServerChange ServerChange ServerChange

Occurs when the selected items in the HtmlSelect control change between posts to the server.

Unload Unload Unload Unload

Occurs when the server control is unloaded from memory.

(Inherited from Control)

Explicit Interface Implementations

IAttributeAccessor.GetAttribute(String) IAttributeAccessor.GetAttribute(String) IAttributeAccessor.GetAttribute(String) IAttributeAccessor.GetAttribute(String)

For a description of this member, see GetAttribute(String).

(Inherited from HtmlControl)
IAttributeAccessor.SetAttribute(String, String) IAttributeAccessor.SetAttribute(String, String) IAttributeAccessor.SetAttribute(String, String) IAttributeAccessor.SetAttribute(String, String)

For a description of this member, see SetAttribute(String, String).

(Inherited from HtmlControl)
IControlDesignerAccessor.GetDesignModeState() IControlDesignerAccessor.GetDesignModeState() IControlDesignerAccessor.GetDesignModeState() IControlDesignerAccessor.GetDesignModeState()

For a description of this member, see GetDesignModeState().

(Inherited from Control)
IControlDesignerAccessor.SetDesignModeState(IDictionary) IControlDesignerAccessor.SetDesignModeState(IDictionary) IControlDesignerAccessor.SetDesignModeState(IDictionary) IControlDesignerAccessor.SetDesignModeState(IDictionary)

For a description of this member, see SetDesignModeState(IDictionary).

(Inherited from Control)
IControlDesignerAccessor.SetOwnerControl(Control) IControlDesignerAccessor.SetOwnerControl(Control) IControlDesignerAccessor.SetOwnerControl(Control) IControlDesignerAccessor.SetOwnerControl(Control)

For a description of this member, see SetOwnerControl(Control).

(Inherited from Control)
IParserAccessor.AddParsedSubObject(Object) IParserAccessor.AddParsedSubObject(Object) IParserAccessor.AddParsedSubObject(Object) IParserAccessor.AddParsedSubObject(Object)

For a description of this member, see AddParsedSubObject(Object).

(Inherited from Control)
IPostBackDataHandler.LoadPostData(String, NameValueCollection) IPostBackDataHandler.LoadPostData(String, NameValueCollection) IPostBackDataHandler.LoadPostData(String, NameValueCollection) IPostBackDataHandler.LoadPostData(String, NameValueCollection)

For a description of this member, see LoadPostData(String, NameValueCollection).

IPostBackDataHandler.RaisePostDataChangedEvent() IPostBackDataHandler.RaisePostDataChangedEvent() IPostBackDataHandler.RaisePostDataChangedEvent() IPostBackDataHandler.RaisePostDataChangedEvent()

For a description of this member, see RaisePostDataChangedEvent().

Extension Methods

FindDataSourceControl(Control) FindDataSourceControl(Control) FindDataSourceControl(Control) FindDataSourceControl(Control)

Returns the data source that is associated with the data control for the specified control.

FindFieldTemplate(Control, String) FindFieldTemplate(Control, String) FindFieldTemplate(Control, String) FindFieldTemplate(Control, String)

Returns the field template for the specified column in the specified control's naming container.

FindMetaTable(Control) FindMetaTable(Control) FindMetaTable(Control) FindMetaTable(Control)

Returns the metatable object for the containing data control.

Applies to

See Also