/// <summary>
        /// 编辑信息
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnEdit_Click(object sender, RoutedEventArgs e)
        {
            //获取鼠标选择的索引
            int num = dgUsers.SelectedIndex;

            if (num < 0)
            {
                MessageBox.Show("请选择要修改的行!");
            }
            else
            {
                //获取选中行
                PayData user = (PayData)dgUsers.SelectedValue;
                //打开编辑窗口
                EditPayPage editRecord = new EditPayPage();
                editRecord.isAdd = false;
                //设置编号不能编辑
                editRecord.txtID.IsReadOnly = true;
                //绑定数据
                editRecord.gridUser.DataContext = user;

                //显示窗口
                editRecord.ShowDialog();
                LoadData();
            }
        }
        // 添加信息
        private void btnAdd_Click(object sender, RoutedEventArgs e)
        {
            //  DispatcherTimer timer = new DispatcherTimer();
            EditPayPage editUser = new EditPayPage();

            editUser.isAdd = true;
            editUser.ShowDialog();
            //加载数据
            LoadData();
        }