分页功能

1.变量

     /// <summary>
        /// 每页记录数
        /// </summary>
        public int pageSize = Global.UserPageSize;
        /// <summary>
        /// 表中记录总数
        /// </summary>
        private int recordsum = 0;
        /// <summary>
        /// 总页数
        /// </summary>
        private int PageSum = 0;
        /// <summary>
        /// 当前页
        /// </summary>
        private int CurrentPage = 1;
        /// <summary>
        /// 当前显示记录集合
        /// </summary>
        private List<User> CurrentList;

2.初始化分页的总记录数、总页数

  /// <summary>
        /// 初始化分页 页数
        /// </summary>
        /// <param name="userName"></param>
        /// <param name="userType"></param>
        private void InitPage()
        {
            right = this.permission.SelectedItem as UserRight;
            if (right != null && !string.IsNullOrEmpty(right.Value))
            {
                //pageIndex 当前页的序号
                recordsum = UserManager.getCount(SearchName, right.Value);
            }
            else
            {
                recordsum = UserManager.getCount(SearchName);
            }

            //判断总页数
            if (recordsum % pageSize == 0)
                PageSum = recordsum / pageSize;
            else
                PageSum = recordsum / pageSize + 1;
        }

3.初始化分页集合

 private void DataGridBind(int pageIndex)
        {
            if (pageIndex > 0)
            {
                right = this.permission.SelectedItem as UserRight;
                if (right != null && !string.IsNullOrEmpty(right.Value))
                {
                    CurrentList = UserManager.getList((pageIndex - 1) * pageSize, pageSize, SearchName, right.Value);
                }
                else
                    CurrentList = UserManager.getList((pageIndex - 1) * pageSize, pageSize, SearchName);
                this.grid.ItemsSource = CurrentList;
                CurrentPage = pageIndex;
                label1.Content = CurrentPage;
                label2.Content = PageSum;
                total.Content = recordsum;
            }
        }

4.跳转页

   /// <summary>
        /// 上一页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void PreviousPage(object sender, RoutedEventArgs e)
        {
            if (CurrentPage > 1)
                DataGridBind(CurrentPage - 1);
        }
        /// <summary>
        /// 下一页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void NextPage(object sender, RoutedEventArgs e)
        {
            if (CurrentPage < PageSum)
                DataGridBind(CurrentPage + 1);
        }
        /// <summary>
        /// 跳转页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void JumpPage(object sender, RoutedEventArgs e)
        {
            int page = 0;
            if (int.TryParse(textBox1.Text, out page))
            {
                if (page <= PageSum)
                    DataGridBind(page);
                else
                {
                    MessageBox.Show("对不起，您输入的页面超过当前最大页数", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
                    this.textBox1.Clear();
                }
            }

        }

5.调用