Changing the ImageUrl property dynamicaly in ASP.NET

The Image server control enables you to work with the images that appears on your Web Page
from the server side code .It's a simple server control,but it can giv you the power to determine
how your images are displayed on the browser screen.A typical image control is constructed in the following manner.
<asp:Image ID="Image1" Runat="server" ImageUrl="~/MyImage1.gif" />
The following example shows how to change the ImageUrl property of the image control dynamicaly.
VB
<script runat="server">
   Protected Sub Button1_Click(ByVal sender As Object ,ByVal e As System.EventArgs)
                Image1.ImageUrl="~/MyImage2.gif"
   End Sub
</script>
C#
protected void Button1_Click(object sender , EventArgs e)
{
        Image1.ImageUrl = "~/MyImage2.gif ";
}