WPF DataGrid分页功能实现代码

在Silverlight中DataGrid分页可以结合DataPager控件很容易实现，但是在WPF中没有类似的，需要手动实现这样一个控件：

1、创建一个UserControl，DP.xaml，代码如下，可以直接拷贝使用：

<UserControl x:Class="WFPSys.UserControls.DP"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <UserControl.Resources>

        <!--每页{0}/共{0}条-->
        <Style x:Key="PageTextBlock1" TargetType="{x:Type TextBlock}">
            <Setter Property="VerticalAlignment" Value="Center" />
            <Setter Property="HorizontalAlignment" Value="Left" />
            <Setter Property="FontSize" Value="13" />
            <Setter Property="FontWeight" Value="Bold" />
            <Setter Property="Foreground" Value="#FF333333" />
        </Style>
        <!--首页上一页等-->
        <Style x:Key="PageTextBlock2" TargetType="{x:Type TextBlock}">
            <Setter Property="VerticalAlignment" Value="Center" />
            <Setter Property="HorizontalAlignment" Value="Left" />
            <Setter Property="Margin" Value="0,10,0,0" />
            <Setter Property="Width" Value="40" />
            <Setter Property="Height" Value="23" />
            <Setter Property="FontSize" Value="13" />
            <Setter Property="Cursor" Value="Hand" />
            <Setter Property="Foreground" Value="#FF333333" />
            <Style.Triggers>
                <Trigger Property="IsMouseOver" Value="True">
                    <Setter Property="Foreground" Value="#FF000000" />
                    <Setter Property="FontWeight" Value="Bold" />
                </Trigger>
            </Style.Triggers>
        </Style>
        <!--中间页数-->
        <Style x:Key="PageTextBlock3" TargetType="{x:Type TextBlock}">
            <Setter Property="VerticalAlignment" Value="Center" />
            <Setter Property="HorizontalAlignment" Value="Left" />
            <Setter Property="Margin" Value="0,10,0,0" />
            <Setter Property="Height" Value="23" />
            <Setter Property="Width" Value="30" />
            <Setter Property="FontSize" Value="10" />
            <Setter Property="Cursor" Value="Hand" />
            <Setter Property="Foreground" Value="#FF333333" />
            <Style.Triggers>
                <Trigger Property="IsMouseOver" Value="True">
                    <Setter Property="Foreground" Value="#FF000000" />
                    <Setter Property="FontWeight" Value="Bold" />
                </Trigger>
                <Trigger Property="IsEnabled" Value="False">
                    <Setter Property="Foreground" Value="#FF000000" />
                    <Setter Property="FontWeight" Value="Bold" />
                </Trigger>
            </Style.Triggers>
        </Style>
        <Style x:Key="PageTextBox" TargetType="{x:Type TextBox}">
            <Setter Property="Height" Value="25" />
            <Setter Property="Width" Value="40" />
            <Setter Property="BorderBrush" Value="{x:Null}" />
            <Setter Property="HorizontalAlignment" Value="Left" />
            <Setter Property="VerticalAlignment" Value="Bottom" />
            <Setter Property="Background">
                <Setter.Value>
                    <ImageBrush ImageSource="/WFPSys;component/Images/Page_TextBack.png" ></ImageBrush>
                </Setter.Value>
            </Setter>
            <Style.Triggers>
                <Trigger Property="IsReadOnly" Value="True">
                    <Setter Property="Background" Value="#FFCCCCCC" />
                </Trigger>
            </Style.Triggers>
        </Style>
        <Style x:Key="PageButton" TargetType="{x:Type Button}">
            <Setter Property="Height" Value="25" />
            <Setter Property="Width" Value="30" />
            <Setter Property="HorizontalAlignment" Value="Left" />
            <Setter Property="VerticalAlignment" Value="Bottom" />
        </Style>

    </UserControl.Resources>
    <Grid>
        <Border CornerRadius="3" Background="Transparent" BorderBrush="{x:Null}">
            <Grid HorizontalAlignment="Stretch" Margin="5 0 5 0" VerticalAlignment="Top" Width="Auto" Height="30">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="150"/>
                    <ColumnDefinition Width="500" MinWidth="500"/>
                </Grid.ColumnDefinitions>
                <TextBlock Name="tbkRecords" Grid.Column="0" Style="{StaticResource PageTextBlock1}" />
                <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" Grid.Column="1">
                    <Grid>
                        <Grid.RowDefinitions >
                            <RowDefinition Height="30"></RowDefinition>
                        </Grid.RowDefinitions>
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="50"/>
                            <ColumnDefinition Width="50"/>
                            <ColumnDefinition Width="*"/>
                            <ColumnDefinition Width="50"/>
                            <ColumnDefinition Width="50"/>
                            <ColumnDefinition Width="50"/>
                            <ColumnDefinition Width="30"/>
                        </Grid.ColumnDefinitions>
                        <TextBlock Grid.Column="0" Name="btnFirst" Text="首页" IsEnabled="False" Style="{StaticResource PageTextBlock2}" />
                        <TextBlock Grid.Column="1" Name="btnPrev" Text="上一页" IsEnabled="False" Style="{StaticResource PageTextBlock2}" />
                        <Grid Grid.Column="2" Name="grid" >
                            <Grid.RowDefinitions>
                                <RowDefinition Height="30" ></RowDefinition>
                            </Grid.RowDefinitions>
                        </Grid>
                        <TextBlock Grid.Column="3" x:Name="btnNext" Text="下一页" IsEnabled="False" Style="{StaticResource PageTextBlock2}" />
                        <TextBlock Grid.Column="4" x:Name="btnLast" Text="未页" IsEnabled="False" Style="{StaticResource PageTextBlock2}"/>
                        <TextBox Grid.Column="5" x:Name="pageGo" MaxLength="6" IsReadOnly="True" Style="{StaticResource PageTextBox}" />
                        <Button Grid.Column="6" x:Name="btnGo" Content="GO" IsEnabled="False" Style="{StaticResource PageButton}" />
                    </Grid>
                </StackPanel>
            </Grid>
        </Border>
    </Grid>
</UserControl>

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;
using System.Data;
using System.Text.RegularExpressions;

namespace WFPSys.UserControls
{
    /// <summary>
    /// DP.xaml 的交互逻辑
    /// </summary>
    public partial class DP : UserControl
    {
        public DP()
        {
            InitializeComponent();
            this.Loaded += delegate
            {
                //首页
                this.btnFirst.MouseLeftButtonUp += new MouseButtonEventHandler(btnFirst_Click);
                this.btnFirst.MouseLeftButtonDown += new MouseButtonEventHandler(btnFirst_MouseLeftButtonDown);
                //上一页
                this.btnPrev.MouseLeftButtonUp += new MouseButtonEventHandler(btnPrev_Click);
                this.btnPrev.MouseLeftButtonDown += new MouseButtonEventHandler(btnPrev_MouseLeftButtonDown);
                //下一页
                this.btnNext.MouseLeftButtonUp += new MouseButtonEventHandler(btnNext_Click);
                this.btnNext.MouseLeftButtonDown += new MouseButtonEventHandler(btnNext_MouseLeftButtonDown);
                //末页
                this.btnLast.MouseLeftButtonUp += new MouseButtonEventHandler(btnLast_Click);
                this.btnLast.MouseLeftButtonDown += new MouseButtonEventHandler(btnLast_MouseLeftButtonDown);
                this.btnGo.Click += new RoutedEventHandler(btnGo_Click);
            };
        }

        private DataTable _dt = new DataTable();
        //每页显示多少条
        private int pageNum = 10;
        //当前是第几页
        private int pIndex = 1;
        //对象
        private DataGrid grdList;
        //最大页数
        private int MaxIndex = 1;
        //一共多少条
        private int allNum = 0;

        #region 初始化数据

        /// <summary>
        /// 初始化数据
        /// </summary>
        /// <param name="grd"></param>
        /// <param name="dtt"></param>
        /// <param name="Num"></param>
        public void ShowPages(DataGrid grd, DataTable ds, int Num)
        {
            if (ds == null || ds.Rows.Count == 0)
                return;
            if (ds.Rows.Count == 0)
                return;
            DataTable dt = ds;
            this._dt = dt.Clone();
            this.grdList = grd;
            this.pageNum = Num;
            this.pIndex = 1;
            foreach (DataRow r in dt.Rows)
                this._dt.ImportRow(r);
            SetMaxIndex();
            ReadDataTable();
            if (this.MaxIndex > 1)
            {
                this.pageGo.IsReadOnly = false;
                this.btnGo.IsEnabled = true;
            }
        }

        #endregion

        #region 画数据

        /// <summary>
        /// 画数据
        /// </summary>
        private void ReadDataTable()
        {
            try
            {
                DataTable tmpTable = new DataTable();
                tmpTable = this._dt.Clone();
                int first = this.pageNum * (this.pIndex - 1);
                first = (first > 0) ? first : 0;
                //如果总数量大于每页显示数量
                if (this._dt.Rows.Count >= this.pageNum * this.pIndex)
                {
                    for (int i = first; i < pageNum * this.pIndex; i++)
                        tmpTable.ImportRow(this._dt.Rows[i]);
                }
                else
                {
                    for (int i = first; i < this._dt.Rows.Count; i++)
                        tmpTable.ImportRow(this._dt.Rows[i]);
                }
                this.grdList.ItemsSource = tmpTable.DefaultView;
                tmpTable.Dispose();
            }
            catch
            {
                MessageBox.Show("错误");
            }
            finally
            {
                DisplayPagingInfo();
            }
        }

        #endregion

        #region 画每页显示等数据

        /// <summary>
        /// 画每页显示等数据
        /// </summary>
        private void DisplayPagingInfo()
        {
            if (this.pIndex == 1)
            {
                this.btnPrev.IsEnabled = false;
                this.btnFirst.IsEnabled = false;
            }
            else
            {
                this.btnPrev.IsEnabled = true;
                this.btnFirst.IsEnabled = true;
            }
            if (this.pIndex == this.MaxIndex)
            {
                this.btnNext.IsEnabled = false;
                this.btnLast.IsEnabled = false;
            }
            else
            {
                this.btnNext.IsEnabled = true;
                this.btnLast.IsEnabled = true;
            }
            this.tbkRecords.Text = string.Format("每页{0}条/共{1}条", this.pageNum, this.allNum);
            int first = (this.pIndex - 4) > 0 ? (this.pIndex - 4) : 1;
            int last = (first + 9) > this.MaxIndex ? this.MaxIndex : (first + 9);
            this.grid.Children.Clear();
            for (int i = first; i <= last; i++)
            {
                ColumnDefinition cdf = new ColumnDefinition();
                this.grid.ColumnDefinitions.Add(cdf);
                TextBlock tbl = new TextBlock();
                tbl.Text = i.ToString();
                tbl.Style = FindResource("PageTextBlock3") as Style;
                tbl.MouseLeftButtonUp += new MouseButtonEventHandler(tbl_MouseLeftButtonUp);
                tbl.MouseLeftButtonDown += new MouseButtonEventHandler(tbl_MouseLeftButtonDown);
                if (i == this.pIndex)
                    tbl.IsEnabled = false;
                Grid.SetColumn(tbl, this.grid.ColumnDefinitions.Count - 1);
                Grid.SetRow(tbl, 0);
                this.grid.Children.Add(tbl);
            }
        }

        #endregion

        #region 首页

        /// <summary>
        /// 首页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnFirst_Click(object sender, System.EventArgs e)
        {
            this.pIndex = 1;
            ReadDataTable();
        }

        /// <summary>
        /// 首页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnFirst_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            e.Handled = true;
        }

        #endregion

        #region 上一页
        /// <summary>
        /// 上一页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnPrev_Click(object sender, System.EventArgs e)
        {
            if (this.pIndex <= 1)
                return;
            this.pIndex--;
            ReadDataTable();
        }

        /// <summary>
        /// 上一页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnPrev_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            e.Handled = true;
        }

        #endregion

        #region 下一页

        /// <summary>
        /// 下一页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnNext_Click(object sender, System.EventArgs e)
        {
            if (this.pIndex >= this.MaxIndex)
                return;
            this.pIndex++;
            ReadDataTable();
        }

        /// <summary>
        /// 下一页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnNext_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            e.Handled = true;
        }

        #endregion

        #region 未页

        /// <summary>
        /// 未页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnLast_Click(object sender, System.EventArgs e)
        {
            this.pIndex = this.MaxIndex;
            ReadDataTable();
        }

        /// <summary>
        /// 未页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnLast_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            e.Handled = true;
        }

        #endregion

        #region 设置最多大页面

        /// <summary>
        /// 设置最多大页面
        /// </summary>
        private void SetMaxIndex()
        {
            //多少页
            int Pages = this._dt.Rows.Count / pageNum;
            if (this._dt.Rows.Count != (Pages * pageNum))
            {
                if (_dt.Rows.Count < (Pages * pageNum))
                    Pages--;
                else
                    Pages++;
            }
            this.MaxIndex = Pages;
            this.allNum = this._dt.Rows.Count;
        }

        #endregion

        #region 跳转到多少页

        /// <summary>
        /// 跳转到多少页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnGo_Click(object sender, RoutedEventArgs e)
        {
            if (IsNumber(this.pageGo.Text))
            {
                int pageNum = int.Parse(this.pageGo.Text);
                if (pageNum > 0 && pageNum <= this.MaxIndex)
                {
                    this.pIndex = pageNum;
                    ReadDataTable();
                }
                else if (pageNum > this.MaxIndex)
                {
                    this.pIndex = this.MaxIndex;
                    ReadDataTable();
                }
            }
            this.pageGo.Text = "";
        }

        #endregion

        #region 分页数字的点击触发事件

        private void tbl_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            TextBlock tbl = sender as TextBlock;
            if (tbl == null)
                return;
            int index = int.Parse(tbl.Text.ToString());
            this.pIndex = index;
            if (index > this.MaxIndex)
                this.pIndex = this.MaxIndex;
            if (index < 1)
                this.pIndex = 1;
            ReadDataTable();
        }

        void tbl_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            e.Handled = true;
        }

        #endregion

        private static Regex RegNumber = new Regex("^[0-9]+$");

        #region 判断是否是数字
        /// <summary>
        /// 判断是否是数字
        /// </summary>
        /// <param name="valString"></param>
        /// <returns></returns>
        public static bool IsNumber(string valString)
        {
            Match m = RegNumber.Match(valString);
            return m.Success;
        }
        #endregion
    }
}

在WPF窗体中添加该用户控件，如下：

<UserControl x:Class="WFPSys.JCZL.BigClass"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
        xmlns:my="clr-namespace:WFPSys.UserControls" 
        mc:Ignorable="d" Loaded="UserControl_Loaded" d:DesignHeight="448" d:DesignWidth="734">
    <Grid Name="gdMainPanel">
        <Grid.Background>
            <ImageBrush ImageSource="/WFPSys;component/Images/public/navigation.png" />
        </Grid.Background>
        <Canvas x:Name="cplButtonPanel" Margin="0" Width="734" Height="44" HorizontalAlignment="Left" VerticalAlignment="Top" FlowDirection="RightToLeft">
            <Canvas.Background>
                <ImageBrush ImageSource="/WFPSys;component/Images/public/navigation.png" />
            </Canvas.Background>
            <Button Content="　　添加" Height="29" Name="btnAdd" Width="60" Margin="80,7.5,0,0" Style="{StaticResource ButtonFunction}" Click="btnAdd_Click">
                <Button.Background>
                    <ImageBrush ImageSource="/WFPSys;component/Images/function/add.png" />
                </Button.Background>
            </Button>
            <Button Content="　　刷新" Height="29" Name="btnReload" Width="60" Margin="10,7.5,0,0" Style="{StaticResource ButtonFunction}" Click="btnReload_Click">
                <Button.Background>
                    <ImageBrush ImageSource="/WFPSys;component/Images/function/reload.png" />
                </Button.Background>
            </Button>
        </Canvas>
        <DockPanel Name="dplDataPanel" Margin="0,44,0,0" Width="734" Height="404" HorizontalAlignment="Left" VerticalAlignment="Top">
            <Grid>
                <Grid.RowDefinitions>
                    <RowDefinition Height="0.9*"></RowDefinition>
                    <RowDefinition Height="0.1*"></RowDefinition>
                </Grid.RowDefinitions>
                <DataGrid Name="dgDataSource" ItemsSource="{Binding }" IsReadOnly="True" Grid.Row="0">
                    <DataGrid.Columns>
                        <DataGridTextColumn Width="50" Header="编号" Binding="{Binding ID}" />
                        <DataGridTextColumn Width="250" Header="类别名称" Binding="{Binding TypeName}" />
                        <DataGridTextColumn Width="*" Header="类别描述" Binding="{Binding Description}" />
                    </DataGrid.Columns>
                    <DataGrid.ContextMenu>
                        <ContextMenu>
                            <!--<Separator />-->
                            <MenuItem x:Name="mitmDelete" Header="删除项目" Click="mitmDelete_Click">
                                <MenuItem.Icon>
                                    <Image Source="/WFPSys;component/Icons/Error.ico" />
                                </MenuItem.Icon>
                            </MenuItem>
                            <!--<Separator />-->
                        </ContextMenu>
                    </DataGrid.ContextMenu>
                </DataGrid>
                <my:DP x:Name="page"  Grid.Row="1" />  <!--分页用户控件声明-->
            </Grid>
        </DockPanel>
    </Grid>
</UserControl>

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.Shapes;
using System.Collections.ObjectModel;
using Syit.Models;
using System.Data;
using Syit.BLLs;

namespace WFPSys.JCZL
{
    /// <summary>
    /// BigClass.xaml 的交互逻辑
    /// </summary>
    public partial class BigClass : UserControl
    {
        public BigClass()
        {
            InitializeComponent();
        }

        #region 功能按钮事件

        /// <summary>
        /// 添加数据
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnAdd_Click(object sender, RoutedEventArgs e)
        {

        }
        /// <summary>
        /// 刷新数据
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnReload_Click(object sender, RoutedEventArgs e)
        {

        }
        /// <summary>
        /// 删除收支项目数据
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void mitmDelete_Click(object sender, RoutedEventArgs e)
        {
            if (true)
            {
                MessageBoxResult boxResult = MessageBox.Show(string.Format("您确定要删除数据【{0}】所包含的信息吗？", ""), "询问：", MessageBoxButton.YesNo, MessageBoxImage.Question, MessageBoxResult.No);
                if (boxResult == MessageBoxResult.Yes)
                {

                    MessageBox.Show("数据删除成功！", "提示：", MessageBoxButton.OK, MessageBoxImage.Information, MessageBoxResult.OK);
                }
            }
        }
        #endregion

        #region 页面加载事件

        private void UserControl_Loaded(object sender, RoutedEventArgs e)
        {
            tb_BigTypesBLL bll = new tb_BigTypesBLL();
            ObservableCollection<tb_BigTypes> list = new ObservableCollection<tb_BigTypes>();
            foreach (DataRowView drv in bll.GetData().DefaultView)
            {
                tb_BigTypes item = new tb_BigTypes();
                item.ID = int.Parse(drv["ID"].ToString());
                item.TypeName = drv["TypeName"].ToString();
                item.Description = drv["Description"].ToString();
                item.IsDelete = int.Parse(drv["IsDelete"].ToString());
                list.Add(item);
            }
            this.dgDataSource.DataContext = list; // 为DataGrid绑定数据源
            this.page.ShowPages(this.dgDataSource, bll.GetData(), 5); //这里是调用设置分页的函数
        }

        #endregion

    }
}