private void detach_MaterialUploads(MaterialUpload entity)
		{
			this.SendPropertyChanging();
			entity.User = null;
		}
		private void attach_MaterialUploads(MaterialUpload entity)
		{
			this.SendPropertyChanging();
			entity.Course = this;
		}
 partial void UpdateMaterialUpload(MaterialUpload instance);
 partial void DeleteMaterialUpload(MaterialUpload instance);
 partial void InsertMaterialUpload(MaterialUpload instance);