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HtmlSelect.Name Properti

  • Referensi

Definisi

Ruang nama:
System.Web.UI.HtmlControls
Rakitan:
System.Web.dll

Mendapatkan atau mengatur nama pengidentifikasi unik yang terkait dengan HtmlSelect kontrol.

public:
 property System::String ^ Name { System::String ^ get(); void set(System::String ^ value); };
public string Name { get; set; }
member this.Name : string with get, set
Public Property Name As String

Nilai Properti

String

Nama pengidentifikasi unik yang HtmlSelect terkait dengan kontrol.

Contoh

Contoh kode berikut menunjukkan cara menggunakan Name properti HtmlSelect kontrol untuk memilih item tertentu dalam Items daftar.

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

<!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" >
   <script runat="server" >
  
      void Page_Load(Object sender, EventArgs e)
      {

         // Bind a data source to the Repeater control. 
         Repeater1.DataSource = CreateRepeaterSource();
         Repeater1.DataBind();

      }

      void Item_Bound(Object sender, RepeaterItemEventArgs e)
      {

         // Each item in the Repeater control contains an HtmlSelect 
         // control. This method binds a data source to the HtmlSelect
         // control as each item in the Repeater control is being
         // bound to data.
 
         // The ItemDataBound event is raised when data is bound to an 
         // item in the Repeater control. Items can include the Header, 
         // Footer, and so on. Use the following logic only if the item 
         // being bound is an Item or AlternatingItem.
         if (e.Item.ItemType == ListItemType.Item || 
             e.Item.ItemType == ListItemType.AlternatingItem)
         {

            // Bind a data source to the HtmlSelect control.
            HtmlSelect selectControl = 
                (HtmlSelect)e.Item.FindControl("Select1");
            selectControl.DataSource = CreateHtmlSelectSource();
            selectControl.DataBind();

            // The runtime automatically generates a unique identifier 
            // for each control embedded in a list control, such as the 
            // Repeater. The Name property of the HtmlSelect control 
            // contains this unique identifier and is commonly used 
            // to identify a specific control.
           

            // Select the last item in the HtmlSelect control if the Name
            // property contains the value "Repeater1:_ctl3:Select1".
            if(selectControl.Name == "Repeater1:_ctl3:Select1") 
            {

               selectControl.SelectedIndex = selectControl.Items.Count - 1;

            }

         }

      }

      DataView CreateHtmlSelectSource()
      {

         // Create a DataTable that contains sample data for the 
         // HtmlSelect controls.
         DataTable dt = new DataTable();
         DataRow dr;
 
         dt.Columns.Add(new DataColumn("Text", typeof(String)));
         dt.Columns.Add(new DataColumn("Value", typeof(String)));
 
         // Populate the DataTable with sample values.
         for (int i = 0; i < 5; i++) 
         {
            dr = dt.NewRow();
 
            dr[0] = "Item " + i.ToString();
            dr[1] = i.ToString();
 
            dt.Rows.Add(dr);
         }
 
         // Create a DataView from the DataTable.
         DataView dv = new DataView(dt);
         return dv;

      }

      DataView CreateRepeaterSource()
      {

         // Create a DataTable that contains sample data for the 
         // Repeater control.
         DataTable dt = new DataTable();
         DataRow dr;
 
         dt.Columns.Add(new DataColumn("Category", typeof(String)));
 
         // Populate the DataTable with sample values.
         for (int i = 0; i < 5; i++) 
         {
            dr = dt.NewRow();
 
            dr[0] = "Category " + i.ToString();

            dt.Rows.Add(dr);
         }
 
         // Create a DataView from the DataTable.
         DataView dv = new DataView(dt);
         return dv;

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

   <form id="form1" runat="server">
  
      <h3> HtmlSelect Name Example </h3>

      Notice that Category 3 has a different item selected by default. <br /> 
  
      <asp:Repeater id="Repeater1"
           OnItemDataBound="Item_Bound"
           runat="server">

         <ItemTemplate>

            <h4><%# DataBinder.Eval(Container.DataItem, "Category") %></h4>

            Select Item:

            <br />

            <select id="Select1"
                    datatextfield="Text"
                    datavaluefield="Value"
                    runat="server"/> 

            <br /><br />

            <hr />

         </ItemTemplate>

      </asp:Repeater>
  
   </form>

</body>
</html>

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

<!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" >
   <script runat="server" >
  
      Sub Page_Load(sender as Object, e As EventArgs)

         ' Bind a data source to the Repeater control. 
         Repeater1.DataSource = CreateRepeaterSource()
         Repeater1.DataBind()

      End Sub

      Sub Item_Bound(sender As Object, e As RepeaterItemEventArgs)

         ' Each item in the Repeater control contains an HtmlSelect 
         ' control. This method binds a data source to the HtmlSelect
         ' control as each item in the Repeater control is being
         ' bound to data.
 
         ' The ItemDataBound event is raised when data is bound to an
         ' item in the Repeater control. Items can include the Header,
         ' Footer, and so on. Use the following logic only if the item 
         ' being bound is an Item or AlternatingItem.
         If (e.Item.ItemType = ListItemType.Item) Or _
            (e.Item.ItemType = ListItemType.AlternatingItem) Then

            ' Bind a data source to the HtmlSelect control.
            Dim selectControl As HtmlSelect = _
                CType(e.Item.FindControl("Select1"), HtmlSelect)
            selectControl.DataSource = CreateHtmlSelectSource()
            selectControl.DataBind()

            ' The runtime automatically generates a unique identifier 
            ' for each control embedded in a list control, such as the 
            ' Repeater. The Name property of the HtmlSelect control 
            ' contains this unique identifier and is commonly used 
            ' to identify a specific control.

            ' Select the last item in the HtmlSelect control if the Name 
            ' property contains the value "Repeater1:_ctl3:Select1".
            If selectControl.Name = "Repeater1:_ctl3:Select1" Then 

               selectControl.SelectedIndex = selectControl.Items.Count - 1

            End If

         End If

      End Sub

      Function CreateHtmlSelectSource() As DataView 

         ' Create a DataTable that contains sample data for the 
         ' HtmlSelect controls.
         Dim dt As DataTable = New DataTable()
         Dim dr As DataRow
 
         dt.Columns.Add(New DataColumn("Text", GetType(String)))
         dt.Columns.Add(New DataColumn("Value", GetType(String)))
 
         ' Populate the DataTable with sample values.
         Dim i As Integer
         
         For i = 0 To 4 
     
            dr = dt.NewRow()
 
            dr(0) = "Item " & i.ToString()
            dr(1) = i.ToString()
 
            dt.Rows.Add(dr)
         
         Next i
 
         ' Create a DataView from the DataTable.
         Dim dv As DataView = New DataView(dt)
         Return dv

      End Function

      Function CreateRepeaterSource() As DataView 

         ' Create a DataTable that contains sample data for the 
         ' Repeater control.
         Dim dt As DataTable = New DataTable()
         Dim dr As DataRow
 
         dt.Columns.Add(new DataColumn("Category", GetType(String)))
 
         ' Populate the DataTable with sample values.
         Dim i As Integer

         For i = 0 To 4  

            dr = dt.NewRow()
 
            dr(0) = "Category " & i.ToString()

            dt.Rows.Add(dr)

         Next i
 
         ' Create a DataView from the DataTable.
         Dim dv As DataView = new DataView(dt)
         return dv

      End Function
  
   </script>
  
<head runat="server">
    <title> HtmlSelect Name Example </title>
</head>
<body>

   <form id="form1" runat="server">
  
      <h3> HtmlSelect Name Example </h3>

      Notice that Category 3 has a different item selected by default. <br /> 
  
      <asp:Repeater id="Repeater1"
           OnItemDataBound="Item_Bound"
           runat="server">

         <ItemTemplate>

            <h4><%# DataBinder.Eval(Container.DataItem, "Category") %></h4>

            Select Item:

            <br />

            <select id="Select1"
                    datatextfield="Text"
                    datavaluefield="Value"
                    runat="server"/> 

            <br /><br />

            <hr />

         </ItemTemplate>

      </asp:Repeater>
  
   </form>

</body>
</html>

Keterangan

Name Gunakan properti untuk menentukan nama pengidentifikasi unik untuk HtmlSelect kontrol. Dalam implementasi ini, pengaktor get mengembalikan nilai Control.UniqueID properti . Namun, pengaktor set tidak menetapkan nilai ke properti ini.

Catatan

Pengaktor set tidak menetapkan nilai ke properti ini karena Name properti harus memiliki nilai Control.UniqueID yang sama dengan properti agar HtmlSelect kontrol berfungsi dengan baik.

Berlaku untuk

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