WPF Datagrid删除一行

private void btnDel_Click(object sender, RoutedEventArgs e)
        {
            if (DGUser.SelectedItem != null)
            {
                DataRowView DRV = (DataRowView)DGUser.SelectedItem;
                string Name = DRV.Row[0].ToString();//获取选中行的name列内容
                if (Name == UserName)//UserName为当前的登陆者
                {
                    MessageBox.Show("不允许删除自己，请周知！");
                }
                else
                {
                    MessageBoxResult result = MessageBox.Show("确定要删除用户？", "提示", MessageBoxButton.YesNo);//弹出删除对话框
                    switch (result)
                    {
                        case MessageBoxResult.Yes:
                            DelUserData(Name);//调用函数，删除数据库
                            DRV.Delete();//删除行
                            MessageBox.Show("删除成功！");
                            break;
                        case MessageBoxResult.No:
                            break;
                    }                    
                }
            }
        }