HtmlSelect 建構函式
定義
重要
部分資訊涉及發行前產品,在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊,不做任何明確或隱含的瑕疵擔保。
初始化 HtmlSelect 類別的新執行個體。
public:
HtmlSelect();
public HtmlSelect ();
Public Sub New ()
範例
下列程式碼範例示範如何動態建立 控制項的 HtmlSelect 實例,並將其放在網頁上。
<%@ 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">
<html xmlns="http://www.w3.org/1999/xhtml" >
<script runat="server" >
void Page_Load(Object sender, EventArgs e)
{
// Create an HtmlSelect control.
HtmlSelect selectlist = new HtmlSelect();
// Populate the HtmlSelect control.
for(int i=0; i<5; i++)
{
ListItem item =
new ListItem("Item " + i.ToString(), i.ToString());
selectlist.Items.Add(item);
}
// Add the control to the Controls collection of the
// PlaceHolder control.
Place.Controls.Clear();
Place.Controls.Add(selectlist);
}
</script>
<head runat="server">
<title> HtmlSelect Constructor Example </title>
</head>
<body>
<form id="form1" runat="server">
<h3> HtmlSelect Constructor Example </h3>
<asp:PlaceHolder id="Place" 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">
<html xmlns="http://www.w3.org/1999/xhtml" >
<script runat="server" >
Sub Page_Load(sender As Object, e As EventArgs)
' Create an HtmlSelect control.
Dim selectlist As HtmlSelect = New HtmlSelect()
' Populate the HtmlSelect control.
Dim i As Integer
For i=0 to 4
Dim item As ListItem = _
New ListItem("Item " + i.ToString(), i.ToString())
selectlist.Items.Add(item)
Next i
' Add the control to the Controls collection of the
' PlaceHolder control.
Place.Controls.Clear()
Place.Controls.Add(selectlist)
End Sub
</script>
<head runat="server">
<title> HtmlSelect Constructor Example </title>
</head>
<body>
<form id="form1" runat="server">
<h3> HtmlSelect Constructor Example </h3>
<asp:PlaceHolder id="Place" runat="server"/>
</form>
</body>
</html>
備註
使用此建構函式來建立和初始化 類別的新實例 HtmlSelect 。
下表顯示 實例 HtmlSelect 的初始屬性值。
屬性 | 初始值 |
---|---|
TagName | 「select」 常值字串。 |