Add C# code in transformation.html
<%@ Import Namespace="CMS.DocumentEngine" %>
<script runat="server">
protected override void OnInit(EventArgs e)
{
base.OnInit(e);
}
</script>
protected override void OnPreRender(EventArgs e)
{
base.OnPreRender(e);
}
public override void OnContentLoaded()
{
base.OnContentLoaded();
SetupControl();
}
protected void SetupControl()
{
}