UpdatePanel 建構函式

  • 參考

定義

命名空間:
System.Web.UI
組件:
System.Web.Extensions.dll

初始化 UpdatePanel 類別的新執行個體。

public:
 UpdatePanel();
public UpdatePanel ();
Public Sub New ()

範例

下列範例示範如何動態建立 UpdatePanel 控制項，並將其新增至頁面。 當您按一下 控制項內的按鈕時 UpdatePanel ，訊息會以日期和時間重新整理。 子控制項是使用 ContentTemplateContainer 屬性來新增的。


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

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

<script runat="server">

    protected void Page_Load(object sender, EventArgs e)
    {
        UpdatePanel up1 = new UpdatePanel();
        up1.ID = "UpdatePanel1";
        up1.UpdateMode = UpdatePanelUpdateMode.Conditional;
        Button button1 = new Button();
        button1.ID = "Button1";
        button1.Text = "Submit";
        button1.Click += new EventHandler(Button_Click);
        Label label1 = new Label();
        label1.ID = "Label1";
        label1.Text = "A full page postback occurred.";
        up1.ContentTemplateContainer.Controls.Add(button1);
        up1.ContentTemplateContainer.Controls.Add(label1);
        Page.Form.Controls.Add(up1);
    }
    protected void Button_Click(object sender, EventArgs e)
    {
        ((Label)Page.FindControl("Label1")).Text = "Panel refreshed at " +
            DateTime.Now.ToString();
    }

</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>UpdatePanel Constructor Example</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <asp:ScriptManager ID="ScriptManager1"
                               runat="server" />
        </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">

<script runat="server">

    Protected Sub Button_Click(ByVal sender As Object, ByVal e As System.EventArgs)
        Dim lbl As Label
        lbl = Page.FindControl("Label1")
        lbl.Text = "Panel refreshed at " & DateTime.Now.ToString()
    End Sub

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
        Dim up1 As UpdatePanel
        up1 = New UpdatePanel()
        up1.ID = "UpdatePanel1"
        Dim button1 As Button
        button1 = New Button()
        button1.ID = "Button1"
        button1.Text = "Submit"
        AddHandler button1.Click, AddressOf Button_Click
        Dim label1 As Label
        label1 = New Label()
        label1.ID = "Label1"
        label1.Text = "A full page postback occurred."
        up1.ContentTemplateContainer.Controls.Add(button1)
        up1.ContentTemplateContainer.Controls.Add(label1)
        Page.Form.Controls.Add(up1)
    End Sub
</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>UpdatePanel Constructor Example</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <asp:ScriptManager ID="ScriptManager1" 
                               runat="server" />
        </div>
    </form>
</body>
</html>

備註

使用此建構函式來初始化 類別的新實例 UpdatePanel 。 若要動態新增 UpdatePanel 控制項至頁面，請建立新的 UpdatePanel 實例，然後將子控制項加入實例屬性所公開的 ContentTemplateContainer 控制項物件。

適用於

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