private void detach_UsrUsers(UsrUser entity)
		{
			this.SendPropertyChanging();
			entity.UsrUser1 = null;
		}
		private void attach_UsrUsers(UsrUser entity)
		{
			this.SendPropertyChanging();
			entity.UsrUser1 = this;
		}
 partial void UpdateUsrUser(UsrUser instance);
 partial void DeleteUsrUser(UsrUser instance);
 partial void InsertUsrUser(UsrUser instance);