UpdatePanel Constructor
Definition
Important
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Initializes a new instance of the UpdatePanel class.
public:
UpdatePanel();public UpdatePanel ();Public Sub New ()Examples
The following example shows how to dynamically create an UpdatePanel control and add it to a page. When you click the button inside the UpdatePanel control, the message is refreshed with the date and time. Child controls are added by using the ContentTemplateContainer property.
<%@ 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>
Remarks
Use this constructor to initialize a new instance of the UpdatePanel class. To dynamically add an UpdatePanel control to a page, create a new UpdatePanel instance and then add child controls to the control object that is exposed by the instance's ContentTemplateContainer property.
