ListControl 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 ListControl 類別的新執行個體。
public:
ListControl();public ListControl ();Public Sub New ()範例
下列程式碼範例示範如何以程式設計方式
建立 ListBox 控制項。 此範例會使用 PlaceHolder 控制項作為 的 ListBox 容器。
<!-- The following example demonstrates how to programmatically
create a ListBox. The example uses a PlaceHolder control as
a container for the ListBox. -->
<%@ 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" >
<head runat="server">
<title>ListBox Example</title>
<script runat="server">
void SubmitBtn_Click(Object sender, EventArgs e)
{
// Create a new ListBox.
ListBox listbox1 = new ListBox();
// Create ListItems to populate the ListBox.
ListItem listItem1 = new ListItem("Item 1","Value 1");
ListItem listItem2 = new ListItem("Item 2","Value 2");
// Add the ListItems to the ListBox.
listbox1.Items.Add(listItem1);
listbox1.Items.Add(listItem2);
// Add the ListBox to the Controls collection of the PlaceHolder control.
Place.Controls.Add(listbox1);
}
</script>
</head>
<body>
<h3>ListBox Example</h3>
<br />
<form id="form1" runat="server">
<asp:button id="Button1"
Text="Click to create a two item ListBox"
OnClick="SubmitBtn_Click"
runat="server" />
<br /><br />
<asp:PlaceHolder id="Place" runat="server"/>
</form>
</body>
</html>
<!-- The following example demonstrates how to programmatically
create a ListBox. The example uses a PlaceHolder control as
a container for the ListBox. -->
<%@ 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" >
<head runat="server">
<title>ListBox Example</title>
<script runat="server">
Sub SubmitBtn_Click(sender As Object, e As EventArgs)
' Create a new ListBox.
Dim listbox1 As New ListBox()
' Create ListItems to populate the ListBox.
Dim listItem1 As New ListItem("Item 1","Value 1")
Dim listItem2 As New ListItem("Item 2","Value 2")
' Add the ListItems to the ListBox.
listbox1.Items.Add(listItem1)
listbox1.Items.Add(listItem2)
' Add the ListBox to the Controls collection of the PlaceHolder control.
Place.Controls.Add(listbox1)
End Sub
</script>
</head>
<body>
<h3>ListBox Example</h3>
<br />
<form id="form1" runat="server">
<asp:button id="Button1"
Text="Click to create a two-item ListBox"
OnClick="SubmitBtn_Click"
runat="server" />
<br /><br />
<asp:PlaceHolder id="Place" runat="server"/>
</form>
</body>
</html>
