C#中ListView分页操作

为了完成ListView分页操作，本文会封装一个负责“分页操作”的泛型类PageInfo，该泛型类不仅适用于WPF中ListView的分页，还适用于WPF及WinForms中其他需要分页操作的控件。 
下面是PageInfo类的完整代码（包含枚举类型JumpOperation的定义）。

public class PageInfo
    {
        public List dataSource;
        int pageSize;
        int pagecount;
        int currentIndex;

        public PageInfo()
        {
            currentIndex = 1;
        }

        public PageInfo(List dataSource, int pageSize)
            : this()
        {
            this.dataSource = dataSource;
            this.pageSize = pageSize;
            this.pagecount = dataSource.Count / pageSize;
            this.pagecount += (dataSource.Count % pageSize) != 0 ? 1 : 0;
        }

        public List GetPageData(JumpOperation jo)
        {
            switch (jo)
            {
                case JumpOperation.GoHome:
                    currentIndex = 1;
                    break;
                case JumpOperation.GoPrePrevious:
                    if (currentIndex > 1)
                    {
                        currentIndex -= 1;
                    }
                    break;
                case JumpOperation.GoNext:
                    if (currentIndex < pagecount)
                    {
                        currentIndex += 1;
                    }
                    break;
                case JumpOperation.GoEnd:
                    currentIndex = pagecount;
                    break;
            }
            List listPageData = new List();
            try
            {
                int pageCountTo = pageSize;
                if (pagecount == currentIndex && dataSource.Count % pageSize > 0)
                {
                    pageCountTo = dataSource.Count % pageSize;
                }
                if (null != dataSource)
                {
                    for (int i = 0; i < pageCountTo; i++)
                    {
                        if ((currentIndex - 1) * pageSize + i < dataSource.Count)
                        {
                            listPageData.Add(dataSource[(currentIndex - 1) * pageSize + i]);
                        }
                        else
                        {
                            break;
                        }
                    }
                }
                return listPageData;
            }
            catch
            {
                return listPageData;
            }
        }
    }
    public enum JumpOperation
    {
        GoHome = 0,
        GoPrePrevious = 1,
        GoNext = 2,
        GoEnd =3
    }

实例化PageInfo类时，传入ListView需要的数据源及每页显示的记录数，进而计算出总页数，并将当前页设置为1。 
PageInfo类提供的GetPageData方法可以用来获取第一页，最后一页，前一页及后一页的数据源。 
下面来演示PageInfo类的使用方法。 
（1）前端页面代码
 

（2）前端页面的逻辑代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace ListViewSplitPages
{
    /// 

    /// MainWindow.xaml 的交互逻辑
    /// 
    public partial class MainWindow : Window
    {
        List studentList;
        PageInfo pageStudentList;
        public MainWindow()
        {
            InitializeComponent();
            studentList = new List() { 
                new Student(){ID="00000001",Name ="zsd",Class="1",Age="17"},
                new Student(){ID="00000002",Name ="fds",Class="3",Age="15"},
                new Student(){ID="00000003",Name ="ds",Class="1",Age="17"},
                new Student(){ID="00000004",Name ="fd",Class="3",Age="16"},
                new Student(){ID="00000005",Name ="rw",Class="1",Age="17"},
                new Student(){ID="00000006",Name ="hg",Class="1",Age="15"},
                new Student(){ID="00000007",Name ="dfd",Class="2",Age="16"},
                new Student(){ID="00000008",Name ="dfd",Class="2",Age="17"},
                new Student(){ID="00000009",Name ="gdf",Class="2",Age="17"},
                new Student(){ID="00000010",Name ="jh",Class="1",Age="15"},
                new Student(){ID="00000011",Name ="fdd",Class="2",Age="17"},
                new Student(){ID="00000012",Name ="rer",Class="1",Age="17"},
                new Student(){ID="00000013",Name ="vvv",Class="1",Age="15"},
                new Student(){ID="00000014",Name ="qww",Class="3",Age="16"},
                new Student(){ID="00000015",Name ="sds",Class="3",Age="18"},
                new Student(){ID="00000016",Name ="lk",Class="1",Age="17"},
                new Student(){ID="00000017",Name ="ui",Class="2",Age="16"},
                new Student(){ID="00000018",Name ="jkj",Class="1",Age="17"},
            };
            pageStudentList = new PageInfo(studentList, 5);
        }

        private void Window_Loaded_1(object sender, RoutedEventArgs e)
        {
            this.ListView_Students.ItemsSource = pageStudentList.GetPageData(JumpOperation.GoHome);
        }

        private void Button_Home_Click(object sender, RoutedEventArgs e)
        {
            this.ListView_Students.ItemsSource = pageStudentList.GetPageData(JumpOperation.GoHome);
        }

        private void Button_Previous_Click(object sender, RoutedEventArgs e)
        {
            this.ListView_Students.ItemsSource = pageStudentList.GetPageData(JumpOperation.GoPrePrevious);
        }

        private void Button_Next_Click(object sender, RoutedEventArgs e)
        {
            this.ListView_Students.ItemsSource = pageStudentList.GetPageData(JumpOperation.GoNext);
        }

        private void Button_End_Click(object sender, RoutedEventArgs e)
        {
            this.ListView_Students.ItemsSource = pageStudentList.GetPageData(JumpOperation.GoEnd);
        }
    }

    public class Student
    {
        public string ID { get; set; }
        public string Name { get; set; }
        public string Class { get; set; }
        public string Age { get; set; }
    }
}

代码中，使用学生集合作为测试数据源，所以泛型类PageInfo的类型参数T被设置为Student，很显然，T还可以是其他的任何类型。 
当点击画面中的“首页”、“前一页”、“下一页”、“尾页”便会调用PageInfo类型的GetPageData方法来获取数据源。 
下面是程序运行后的画面

小编为了学习，加深印象而复制别人的文章过来，这是原来作者的文章链接：https://blog.csdn.net/yl2isoft/article/details/51228290