WPF里DataGrid分页控件

1.主要代码：

using System;
using System.Collections.ObjectModel;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using GalaSoft.MvvmLight.Command;

namespace PaggingDataGrid.CustomCtrl
{
    /// <summary>按照步骤 1a 或 1b 操作，然后执行步骤 2 以在 XAML 文件中使用此自定义控件。 步骤 1a) 在当前项目中存在的 XAML 文件中使用该自定义控件。 将此 XmlNamespace 特性添加到要使用该特性的标记文件的根 元素中: xmlns:MyNamespace="clr-namespace:PaggingDataGrid" 步骤 1b) 在其他项目中存在的 XAML 文件中使用该自定义控件。 将此 XmlNamespace 特性添加到要使用该特性的标记文件的根 元素中: xmlns:MyNamespace="clr-namespace:PaggingDataGrid;assembly=PaggingDataGrid" 您还需要添加一个从 XAML 文件所在的项目到此项目的项目引用， 并重新生成以避免编译错误: 在解决方案资源管理器中右击目标项目，然后依次单击 “添加引用”->“项目”->[浏览查找并选择此项目] 步骤 2) 继续操作并在 XAML 文件中使用控件。
    /// <MyNamespace:PaggingControl />
    /// </summary>
    public class PaggingControl : Control
    {
        // Using a DependencyProperty as the backing store for TotalPages.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty TotalPagesProperty =
            DependencyProperty.Register("TotalPages", typeof (uint), typeof (PaggingControl),
                                        new PropertyMetadata(1u, TotalPagesPropertyChangeCallback));

        // Using a DependencyProperty as the backing store for CurrentPage.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty CurrentPageProperty =
            DependencyProperty.Register("CurrentPage", typeof (uint), typeof (PaggingControl),
                                        new PropertyMetadata(1u, CurrentPagePropertyChangeCallback));

        // Using a DependencyProperty as the backing store for PageSize.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty PageSizeProperty =
            DependencyProperty.Register("PageSize", typeof (uint), typeof (PaggingControl),
                                        new PropertyMetadata(10u, PageSizePropertyChangecallback));

        // Using a DependencyProperty as the backing store for PageSizeList.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty PageSizeListProperty =
            DependencyProperty.Register("PageSizeList", typeof (ObservableCollection<uint>), typeof (PaggingControl),
                                        new PropertyMetadata(new ObservableCollection<uint> {10u, 20u, 50u, 100u}));

        // Using a DependencyProperty as the backing store for ItemsCount.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty ItemsCountProperty =
            DependencyProperty.Register("ItemsCount", typeof (uint), typeof (PaggingControl),
                                        new PropertyMetadata(1u, ItemsCountPropertyChangeCallback));

        // Using a DependencyProperty as the backing store for PageRefreshCommand.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty PageRefreshCommandProperty =
            DependencyProperty.Register("PageRefreshCommand", typeof (ICommand), typeof (PaggingControl),
                                        new PropertyMetadata(null));

        static PaggingControl()
        {
            DefaultStyleKeyProperty.OverrideMetadata(typeof (PaggingControl),
                                                     new FrameworkPropertyMetadata(typeof (PaggingControl)));
        }

        public PaggingControl()
        {
            //第一次时候 刷新一下列表
            Loaded += delegate { RaisePageRefreshEvent(); };
        }

        /// <summary>总页数</summary>
        public uint TotalPages
        {
            get { return (uint) GetValue(TotalPagesProperty); }
            set { SetValue(TotalPagesProperty, value); }
        }

        /// <summary>当前页</summary>
        public uint CurrentPage
        {
            get { return (uint) GetValue(CurrentPageProperty); }
            set { SetValue(CurrentPageProperty, value); }
        }

        /// <summary>每页的大小</summary>
        public uint PageSize
        {
            get { return (uint) GetValue(PageSizeProperty); }
            set { SetValue(PageSizeProperty, value); }
        }

        /// <summary>每页大小列表，即页面大小选择框的数据源</summary>
        public ObservableCollection<uint> PageSizeList
        {
            get { return (ObservableCollection<uint>) GetValue(PageSizeListProperty); }
            set { SetValue(PageSizeListProperty, value); }
        }

        /// <summary>转到首页</summary>
        public ICommand FirstPageCmd
        {
            get
            {
                return new RelayCommand(() => { CurrentPage = 1; }
                                        , () => CurrentPage != 1);
            }
        }

        /// <summary>上一页</summary>
        public ICommand PreviousPageCmd
        {
            get { return new RelayCommand(() => { CurrentPage -= 1; }, () => CurrentPage > 1); }
        }

        /// <summary>下一页</summary>
        public ICommand NextPageCmd
        {
            get { return new RelayCommand(() => { CurrentPage += 1; }, () => CurrentPage < TotalPages); }
        }

        /// <summary>尾页</summary>
        public ICommand LastPageCmd
        {
            get { return new RelayCommand(() => { CurrentPage = TotalPages; }, () => CurrentPage != TotalPages); }
        }

        /// <summary>转到某一页</summary>
        public ICommand TurnToPageCmd
        {
            get { return new RelayCommand(RaisePageRefreshEvent); }
        }

        /// <summary>数据总大小</summary>
        public uint ItemsCount
        {
            get { return (uint) GetValue(ItemsCountProperty); }
            set { SetValue(ItemsCountProperty, value); }
        }

        /// <summary>参数 选择Tuple(uint, uint)代表页数 和页大小，即index和length</summary>
        public ICommand PageRefreshCommand
        {
            get { return (ICommand) GetValue(PageRefreshCommandProperty); }
            set { SetValue(PageRefreshCommandProperty, value); }
        }

        private static void TotalPagesPropertyChangeCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            var ctrl = d as PaggingControl;
            if (ctrl != null)
            {
                if (ctrl.CurrentPage > ctrl.TotalPages)
                {
                    ctrl.CurrentPage = ctrl.TotalPages;
                }
                else if (ctrl.CurrentPage <= 1)
                {
                    ctrl.CurrentPage = 1;
                }
                ctrl.RaisePageRefreshEvent();
            }
        }


        private static void CurrentPagePropertyChangeCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            var ctrl = d as PaggingControl;
            if (ctrl != null)
            {
                if (ctrl.CurrentPage > ctrl.TotalPages)
                {
                    ctrl.CurrentPage = ctrl.TotalPages;
                }
                else if (ctrl.CurrentPage <= 1)
                {
                    ctrl.CurrentPage = 1;
                }
                ctrl.RaisePageRefreshEvent();
            }
        }

        private static void PageSizePropertyChangecallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            var ctrl = d as PaggingControl;
            if (ctrl != null)
            {
                ctrl.TotalPages = ctrl.ItemsCount/ctrl.PageSize + (ctrl.ItemsCount%ctrl.PageSize == 0 ? 0 : 1u);
                ctrl.RaisePageRefreshEvent();
            }
        }

        private static void ItemsCountPropertyChangeCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            var ctrl = d as PaggingControl;
            if (ctrl != null)
            {
                ctrl.TotalPages = ctrl.ItemsCount/ctrl.PageSize + (ctrl.ItemsCount%ctrl.PageSize == 0 ? 0 : 1u);
            }
        }

        private void RaisePageRefreshEvent()
        {
            if (PageRefreshCommand != null)
            {
                PageRefreshCommand.Execute(Tuple.Create(CurrentPage, PageSize));
            }
        }
    }
}

2.效果图：

外部接口最少，只需要外部两个接口即可实现分页的所有功能。

3.参考网页：

 https://www.codeproject.com/Articles/350447/WPF-Paging-in-DataGrid-ListBox

将其代码进行了改进，忽略了不需要的部分，加入了一些简单的特性。更符合MVVM思想。

4.源码下载

https://files.cnblogs.com/files/chlm/PaggingDataGrid.rar