GetScriptReferences does not get called

Question

I have written a Custom Control that contains the following:

[assembly: System.Web.UI.WebResource("InSysControls.AssignmentLists.AssignmentLists.js", "text/javascript")]
namespace InSysControls
{
    [ToolboxData("<{0}:AssignmentLists ID='AssignmentListsID' runat=\"server\"> </{0}:AssignmentLists>"), ParseChildren(true, "Items")]
    public class AssignmentLists : CompositeDataBoundControl, IScriptControl, INamingContainer
    {
     #region IScriptControl Members

     public IEnumerable<ScriptDescriptor> GetScriptDescriptors() {
      ScriptControlDescriptor descriptor = new ScriptControlDescriptor(this.GetType().FullName, this.ClientID);
      yield return descriptor;
     }

     public IEnumerable<ScriptReference> GetScriptReferences() {
      yield return new ScriptReference("InSysControls.AssignmentLists.AssignmentLists.js", "InSysControls");
     }

     #endregion
    }
}

Does anyone know of a reason why neither GetScriptDescriptors or GetScriptReferences shouldn't get called? The other parts of the Control works just fine.

Answer 1

You need to register the control as a ScriptControl:

protected override void OnPreRender(EventArgs e)
{

    if (!this.DesignMode)
    {

        // Link the script up with the script manager
        ScriptManager scriptManager = ScriptManager.GetCurrent(this.Page);
        if (scriptManager != null)
        {
            scriptManager.RegisterScriptControl(this);
        }

    }

    base.OnPreRender(e);

}

protected override void Render(HtmlTextWriter writer)
{
    if (!this.DesignMode)
    {
        ScriptManager.GetCurrent(this.Page).RegisterScriptDescriptors(this);
    }
    base.Render(writer);
}