How to dynamically load User Controls

Create a User Control

<P>
<asp:Button id='Button1' runat='server' Text='Button'></asp:Button></P>
<P>
<asp:Label id='Label1' runat='server'></asp:Label></P>

On button Click
VB.NET

Label1.Text = 'Hello'

C#

Label1.Text = 'Hello' ;

Create a Webform to use a UserControl

<asp:Panel id='Panel1' runat='server'></asp:Panel>

VB.NET

Dim myControl As Control = CType(Page.LoadControl('UC1.ascx'), Control)
Panel1.Controls.Add(myControl)

C#

Control myControl   =(Control)Page.LoadControl('UC1.ascx');
Panel1.Controls.Add(myControl);