PlaceHolder Control

Definition and Usage

The PlaceHolder control is used to reserve space for controls added by code.

Note: The PlaceHolder control does not produce any visible output (it only acts as a container for other controls on the Web page).

Properties

Property	Description
id	A unique id for the control
runat	Specifies that the control is a server control. Must be set to "server"

Example 1

In the following example we declare one PlaceHolder control in an .aspx file. Then we add some Web server controls to the PlaceHolder control in the Page_Load event:

<script runat="server">
  Sub Page_Load(Sender As Object, e As EventArgs)
    dim b As HtmlButton=New HtmlButton()
    b.InnerText="1"
    pholder.Controls.Add(b)
    b=New HtmlButton()
    b.InnerText="2"
    pholder.Controls.Add(b)
  End Sub
</script>

<html>
<body>
<form runat="Server">
<asp:PlaceHolder id="pholder" runat="server"/>
</form>
</body>
</html>

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