private void UpdateToolboxItem(IDesignerHost host)
{
if (host == null)
{
throw new ArgumentNullException();
}
// Now get a hold of the toolbox service and add an icon for our user control. The
// toolbox service will automatically maintain this icon as long as our file lives.
//
IToolboxService tbx = (IToolboxService)GetService(typeof(IToolboxService));
if (tbx != null)
{
fullClassName = host.RootComponentClassName;
if (this.toolboxItem != null)
{
tbx.RemoveToolboxItem(this.toolboxItem);
}
this.toolboxItem = new UserControlToolboxItem(fullClassName);
try {
tbx.AddLinkedToolboxItem(toolboxItem, SR.GetString(SR.UserControlTab), host);
}
catch (Exception ex) {
Debug.Fail("Failed to add toolbox item", ex.ToString());
}
}
}