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在这里插入图片描述

文章目录

1、项目准备
2、功能实现
- 1、分页控件 DataPager 实现
- 2、分页控件数据模型与查询行为
- 3、数据界面实现
3、运行效果
4、源代码获取

1、项目准备

打开项目 Wpf_Examples，新建 PageBarWindow.xaml 界面、PageBarViewModel.cs ,在用户控件库 UserControlLib中创建用户控件 DataPager.xaml 文件。如下所示：
在这里插入图片描述
注意：如果没有 Wpf_Examples 项目，可以参考 WPF+MVVM案例实战（三）- 动态数字卡片效果实现，里面详细说明了整个项目的创建过程和环境包安装。

2、功能实现

1、分页控件 DataPager 实现

DataPager.xaml 页面代码实现如下：

<UserControl x:Class="UserControlLib.DataPager"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:local="clr-namespace:UserControlLib"x:Name="userControl"mc:Ignorable="d"Height="30"  HorizontalContentAlignment="Right" VerticalContentAlignment="Center"><Grid><Grid.Resources><Style x:Key="NormalTextBlockStyle" TargetType="{x:Type TextBlock}"><Setter Property="TextWrapping" Value="NoWrap" /><Setter Property="VerticalAlignment" Value="Center" /><Setter Property="FontSize" Value="14"></Setter><Setter Property="Foreground" Value="#96bfd6" /></Style><ControlTemplate x:Key="PageButtonTemplate" TargetType="{x:Type Button}"><TextBlock x:Name="textBlock" VerticalAlignment="Center" Text="{TemplateBinding Content}" HorizontalAlignment="Stretch" Cursor="Hand" Foreground="#96bfd6" /><ControlTemplate.Triggers><Trigger Property="IsEnabled" Value="False"><Setter Property="Foreground" TargetName="textBlock" Value="#FF554F4F" /><Setter Property="Cursor" Value="None" /><Setter Property="FontSize" Value="14"></Setter></Trigger></ControlTemplate.Triggers></ControlTemplate><Style x:Key="LabelStyle" TargetType="{x:Type Label}"><Setter Property="VerticalAlignment" Value="Center" /><Setter Property="FontSize" Value="14"></Setter><Setter Property="Foreground" Value="#FFABA5A5" /></Style><Style x:Key="TextBoxStyle" TargetType="{x:Type TextBox}"><Setter Property="HorizontalAlignment" Value="Center" /><Setter Property="HorizontalContentAlignment" Value="Center" /><Setter Property="VerticalAlignment" Value="Center" /><Setter Property="VerticalContentAlignment" Value="Center" /><Setter Property="Background" Value="#FFEAEBEC" /><Setter Property="FontSize" Value="14"></Setter><Setter Property="Foreground" Value="#96bfd6" /><Setter Property="BorderBrush" Value="Transparent" /><Setter Property="BorderThickness" Value="0" /><Setter Property="CharacterCasing" Value="Upper" /><Setter Property="InputMethod.IsInputMethodEnabled" Value="False" /></Style></Grid.Resources><StackPanel Orientation="Horizontal" HorizontalAlignment="Right" VerticalAlignment="Center" x:Name="Stack_Main"><TextBlock Style="{DynamicResource NormalTextBlockStyle}" Text="共" /><TextBlock Text="{Binding TotalCount, ElementName=userControl}" Style="{DynamicResource NormalTextBlockStyle}" Margin="4,0" /><TextBlock Style="{DynamicResource NormalTextBlockStyle}" Text="行，每页" /><!--<TextBlock Text="{Binding PageSize, ElementName=userControl}" Style="{DynamicResource NormalTextBlockStyle}" Margin="4,0" />--><ComboBox Grid.Column="0" Height="24" VerticalAlignment="Center" x:Name="cboxPageSize"  Padding="0" VerticalContentAlignment="Center" HorizontalContentAlignment="Center"Width="60" Margin="5,0,0,0" SelectedItem="{Binding PageSize, ElementName=userControl,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" Cursor="Hand" /><TextBlock Text="行，第" Style="{DynamicResource NormalTextBlockStyle}" /><TextBlock Text="{Binding PageIndex, ElementName=userControl}" Style="{DynamicResource NormalTextBlockStyle}" Margin="4,0,2,0" /><TextBlock Text="/" Style="{DynamicResource NormalTextBlockStyle}" /><TextBlock Text="{Binding PageCount, ElementName=userControl, Mode=OneWay}" Style="{DynamicResource NormalTextBlockStyle}" Margin="2,0,4,0" /><TextBlock Text="页" Style="{DynamicResource NormalTextBlockStyle}" /><Button x:Name="btnFirst" Content="首页" FontSize="14" Template="{DynamicResource PageButtonTemplate}" VerticalAlignment="Center" Margin="10,0,0,0" Click="btnFirst_Click" IsEnabled="{Binding CanGoFirstOrPrev, ElementName=userControl}" /><Button x:Name="btnPrev" Content="上一页" FontSize="14" Template="{DynamicResource PageButtonTemplate}" VerticalAlignment="Center" Margin="10,0,0,0" Click="btnPrev_Click" IsEnabled="{Binding CanGoFirstOrPrev, ElementName=userControl}" /><Button x:Name="btnNext" Content="下一页" FontSize="14" VerticalAlignment="Center" Template="{DynamicResource PageButtonTemplate}" Margin="10,0,10,0" Click="btnNext_Click" IsEnabled="{Binding CanGoLastOrNext, ElementName=userControl}" /></StackPanel></Grid>
</UserControl>

DataPager.cs 后台代码实现如下：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
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 UserControlLib
{/// <summary>/// DataPager.xaml 的交互逻辑/// </summary>public partial class DataPager : UserControl, INotifyPropertyChanged{/// <summary>/// 分页前处理的事件,如果设置e.IsCancel=True将取消分页/// </summary>//public event PageChangingRouteEventHandler PageChanging;/ <summary>/ 分页后处理的事件/ </summary>//public event PageChangedRouteEventHandler Closed;public static readonly RoutedEvent PageChangedEvent = EventManager.RegisterRoutedEvent("PageChangedEvent", RoutingStrategy.Bubble,typeof(EventHandler<PageChangedEventArgs>), typeof(DataPager));public delegate void PageChangedRouteEventHandler(object sender, PageChangedEventArgs e);public event RoutedEventHandler PageChanged{add { this.AddHandler(PageChangedEvent, value); }remove { this.RemoveHandler(PageChangedEvent, value); }}//public event Action Closed;public DataPager(){InitializeComponent();BindComBox();}#region 依赖属性--------------------------------------/// <summary>/// 当前页/// </summary>public int PageIndex{get { return (int)GetValue(PageIndexProperty); }set { SetValue(PageIndexProperty, value); }}// Using a DependencyProperty as the backing store for CurrentPage.  This enables animation, styling, binding, etc...public static readonly DependencyProperty PageIndexProperty =DependencyProperty.Register("PageIndex", typeof(int), typeof(DataPager), new UIPropertyMetadata(1, (sender, e) =>{var dp = sender as DataPager;dp.ChangeNavigationButtonState();}));/// <summary>/// 每页显示数据大小/// </summary>public int PageSize{get { return (int)GetValue(PageSizeProperty); }set { SetValue(PageSizeProperty, value); }}// Using a DependencyProperty as the backing store for PageSize.  This enables animation, styling, binding, etc...public static readonly DependencyProperty PageSizeProperty =DependencyProperty.Register("PageSize", typeof(int), typeof(DataPager), new UIPropertyMetadata(20, (sender, e) =>{var dp = sender as DataPager;if (dp == null) return;dp.InitData();dp.OnPageChanging(1);dp.ChangeNavigationButtonState();}));/// <summary>/// 记录数量/// </summary>public int TotalCount{get { return (int)GetValue(TotalCountProperty); }set{SetValue(TotalCountProperty, value);}}// Using a DependencyProperty as the backing store for TotalCount.  This enables animation, styling, binding, etc...public static readonly DependencyProperty TotalCountProperty =DependencyProperty.Register("TotalCount", typeof(int), typeof(DataPager), new UIPropertyMetadata(0, (sender, e) =>{var dp = sender as DataPager;if (dp == null) return;dp.InitData();dp.ChangeNavigationButtonState();}));/// <summary>/// 总页数/// </summary>public int PageCount{get { return (int)GetValue(PageCountProperty); }private set { SetValue(PageCountProperty, value); }}// Using a DependencyProperty as the backing store for PageCount.  This enables animation, styling, binding, etc...public static readonly DependencyProperty PageCountProperty =DependencyProperty.Register("PageCount", typeof(int), typeof(DataPager), new UIPropertyMetadata(1));/// <summary>/// 是否可以点击首页和上一页按钮/// </summary>public bool CanGoFirstOrPrev{get{if (PageIndex <= 1) return false;return true;}}/// <summary>/// 是否可以点击最后页和下一页按钮/// </summary>public bool CanGoLastOrNext{get{if (PageIndex >= PageCount) return false;return true;}}#endregion 依赖属性--------------------------------------#region 下拉列表数据绑定-------------------------public void BindComBox(){List<string> pageSizeList = new List<string> { "20", "50", "100" };cboxPageSize.ItemsSource = pageSizeList;cboxPageSize.SelectedIndex = 0;}#endregion 下拉列表数据绑定-------------------------/// <summary>/// 初始化数据/// </summary>void InitData(){if (this.TotalCount == 0){this.PageCount = 1;}else{this.PageCount = this.TotalCount % this.PageSize > 0 ? (this.TotalCount / this.PageSize) + 1 : this.TotalCount / this.PageSize;}if (this.PageIndex < 1){this.PageIndex = 1;}if (this.PageIndex > this.PageCount){this.PageIndex = this.PageCount;}if (this.PageSize < 1){this.PageSize = 20;}}/// <summary>/// 点击首页按钮/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void btnFirst_Click(object sender, RoutedEventArgs e){OnPageChanging(1);}/// <summary>/// 点击上一页按钮/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void btnPrev_Click(object sender, RoutedEventArgs e){OnPageChanging(this.PageIndex - 1);}/// <summary>/// 点击下一页按钮/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void btnNext_Click(object sender, RoutedEventArgs e){OnPageChanging(this.PageIndex + 1);}/// <summary>/// 点击末页按钮/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void btnLast_Click(object sender, RoutedEventArgs e){OnPageChanging(this.PageCount);}/// <summary>/// 点击跳转按钮/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void btnGoTo_Click(object sender, RoutedEventArgs e){int pageIndex = 1;try{//pageIndex = Convert.ToInt32(txtPageIndex.Text);}catch{}finally{OnPageChanging(pageIndex);}}/// <summary>/// 页码更改/// </summary>/// <param name="pageIndex"></param>internal void OnPageChanging(int pageIndex){if (pageIndex < 1) pageIndex = 1;if (pageIndex > this.PageCount) pageIndex = this.PageCount;var newPageIndex = pageIndex;//var eventArgs = new PageChangingEventArgs() { OldPageIndex = oldPageIndex, NewPageIndex = newPageIndex };var eventArgs = new PageChangedEventArgs(PageChangedEvent, this);this.PageIndex = newPageIndex;RaiseEvent(eventArgs);//if (this.Closed != null)//{//    this.Closed();//}//if (!eventArgs.IsCancel)//{//    if (this.Closed != null)//    {//        this.Closed.Invoke();//    }//}}/// <summary>/// 通知导航按钮(首页,上一页,下一页,末页)状态的更改/// </summary>void ChangeNavigationButtonState(){this.NotifyPropertyChanged("CanGoFirstOrPrev");this.NotifyPropertyChanged("CanGoLastOrNext");}#region INotifyPropertyChanged成员public event PropertyChangedEventHandler PropertyChanged;public void NotifyPropertyChanged(string propertyName){if (this.PropertyChanged != null){this.PropertyChanged.Invoke(this, new PropertyChangedEventArgs(propertyName));}}#endregion INotifyPropertyChanged成员private void cboxPageSize_SelectionChanged(object sender, SelectionChangedEventArgs e){this.PageSize = ((System.Collections.Generic.KeyValuePair<int, string>)(cboxPageSize.SelectedItem)).Key;var param = new PageChangedEventArgs(PageChangedEvent, this);RaiseEvent(param);//if (Closed != null)//{//    this.Closed.Invoke();//}}private void TxtPageIndex_PreviewTextInput(object sender, TextCompositionEventArgs e){Regex re = new Regex("[^0-9]+");e.Handled = re.IsMatch(e.Text);}}public class PageChangedEventArgs : RoutedEventArgs{public PageChangedEventArgs(RoutedEvent routedEvent, object source) : base(routedEvent, source) { }public DataPager dataPager { get; set; }}
}

2、分页控件数据模型与查询行为

在这里插入图片描述 PageBarAction.cs 代码实现如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using UserControlLib.Models;namespace UserControlLib.Actions
{public class PageBarAction{public static bool GetDataByPage<T>(int pageSize, int pageIndex, List<T> list, T obj) where T : DataModel{var temp = list.FirstOrDefault(t => t.Key == obj.Key);if (temp == null) return false;int index = list.IndexOf(temp);if (index >= pageSize * (pageIndex - 1) && index < pageSize * pageIndex){return true;}else{return false;}}}
}

DataModel.cs 数据模型如下：

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Controls;
using System.Windows;
using CommunityToolkit.Mvvm.ComponentModel;namespace UserControlLib.Models
{[Serializable]public class DataModel : ObservableObject{private string key = Guid.NewGuid().ToString();/// <summary>/// Key/// </summary>public string Key{get => key;set => SetProperty(ref key, value);}private int order = 0;/// <summary>/// 序号/// </summary>public int Order{get => order;set => SetProperty(ref order, value);}private bool isSelected = false;/// <summary>/// 是否选中/// </summary>public bool IsSelected{get => isSelected;set => SetProperty(ref isSelected, value);}private bool changedEnabled = false;/// <summary>/// 修改使能/// </summary>public bool ChangedEnabled{get => changedEnabled;set => SetProperty(ref changedEnabled, value);}private List<string> errors = new List<string>();/// <summary>/// 错误提示集合/// </summary>public List<string> Errors{get { return errors; }set { errors = value; }}private string error = string.Empty;/// <summary>/// 错误提示,未使用/// </summary>public string Error{get { return error; }set { error = value; }}public string this[string columnName]{get{var vc = new ValidationContext(this, null, null);vc.MemberName = columnName;var res = new List<System.ComponentModel.DataAnnotations.ValidationResult>();var result = this.GetType().GetProperty(columnName).GetValue(this, null);if (res.Count > 0){return string.Join(Environment.NewLine, res.Select(r => r.ErrorMessage).ToArray());}return string.Empty;}}public string GetHashKey(){return Guid.NewGuid().GetHashCode().ToString();}}}

自定义控件样式如下
在这里插入图片描述

3、数据界面实现

这里我们使用 DataGrid 显示数据，用 DataPager 分页控件实现分页控制。

PageBarWindow.xaml 界面代码如下：

<Window x:Class="Wpf_Examples.Views.PageBarWindow"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:d="http://schemas.microsoft.com/expression/blend/2008"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"xmlns:local="clr-namespace:Wpf_Examples.Views"xmlns:uc="clr-namespace:UserControlLib;assembly=UserControlLib"DataContext="{Binding Source={StaticResource Locator},Path=PageBar}"mc:Ignorable="d"Title="PageBarWindow" Height="450" Width="800"><Window.Resources><!--DataGrid样式--><Style TargetType="DataGrid" ><!--网格线颜色--><Setter Property="IsReadOnly" Value="True" /><Setter Property="FontSize" Value="16" /><Setter Property="CanUserResizeColumns" Value="False"/><Setter Property="CanUserResizeRows" Value="False"/><Setter Property="AutoGenerateColumns" Value="False" /><Setter Property="CanUserAddRows" Value="False" /><Setter Property="BorderBrush" Value="#FFF5F7F5" /></Style><!--标题栏样式--><Style TargetType="DataGridColumnHeader" ><Setter Property="SnapsToDevicePixels" Value="True" /><Setter Property="MinWidth" Value="0" /><Setter Property="MinHeight" Value="28" /><Setter Property="FontSize" Value="16" /><Setter Property="Cursor" Value="Hand" /><Setter Property="Template"><Setter.Value><ControlTemplate TargetType="DataGridColumnHeader"><Border x:Name="BackgroundBorder" BorderThickness="0,1,0,1" Width="Auto"><Grid ><Grid.ColumnDefinitions><ColumnDefinition Width="*" /></Grid.ColumnDefinitions><ContentPresenter  Margin="0,0,0,0" VerticalAlignment="Center" HorizontalAlignment="Center"/><Path x:Name="SortArrow" Visibility="Collapsed" Data="M0,0 L1,0 0.5,1 z" Stretch="Fill"  Grid.Column="2" Width="8" Height="6" Fill="White" Margin="0,0,50,0" VerticalAlignment="Center" RenderTransformOrigin="1,1" /><Rectangle Width="1" Fill="#d6c79b" HorizontalAlignment="Right" Grid.ColumnSpan="1" /></Grid></Border></ControlTemplate></Setter.Value></Setter><Setter Property="Height" Value="25"/></Style><!--行样式触发--><!--背景色改变必须先设置cellStyle 因为cellStyle会覆盖rowStyle样式--><Style  TargetType="DataGridRow"><Setter Property="Background" Value="#F2F2F2" /><Setter Property="Height" Value="25"/><Setter Property="Foreground" Value="Black" /><Style.Triggers><!--隔行换色--><Trigger Property="AlternationIndex" Value="0" ><Setter Property="Background" Value="#e7e7e7" /></Trigger><Trigger Property="AlternationIndex" Value="1" ><Setter Property="Background" Value="#f2f2f2" /></Trigger><Trigger Property="IsMouseOver" Value="True"><Setter Property="Background" Value="LightGray"/><!--<Setter Property="Foreground" Value="White"/>--></Trigger><Trigger Property="IsSelected" Value="True"><Setter Property="Foreground" Value="Black"/></Trigger></Style.Triggers></Style><!--单元格样式触发--><Style TargetType="DataGridCell"><Setter Property="Template"><Setter.Value><ControlTemplate TargetType="DataGridCell"><TextBlock TextAlignment="Center" VerticalAlignment="Center"  ><ContentPresenter /></TextBlock></ControlTemplate></Setter.Value></Setter><Style.Triggers><Trigger Property="IsSelected" Value="True"><Setter Property="Foreground" Value="Black"/></Trigger></Style.Triggers></Style><Style TargetType="DataGrid" x:Key="DataGridStyle1"><!--  网格线颜色  --><Setter Property="RowHeaderWidth" Value="0" /><Setter Property="BorderThickness" Value="{StaticResource DataGrid.BorderThickness}" /><Setter Property="HeadersVisibility" Value="Column" /><Setter Property="Background" Value="{StaticResource ColumnHeader.Background}" /><Setter Property="BorderBrush" Value="{StaticResource DataGrid.BorderBrush}" /><Setter Property="HorizontalGridLinesBrush" Value="#00E9ECF1" /><Setter Property="VerticalGridLinesBrush" Value="#00E9ECF1" /><Setter Property="UseLayoutRounding" Value="True" /><Setter Property="SnapsToDevicePixels" Value="True" /><Setter Property="AutoGenerateColumns" Value="False" /><Setter Property="CanUserAddRows" Value="False" /><Setter Property="CanUserReorderColumns" Value="False" /><Setter Property="CanUserResizeColumns" Value="False" /><Setter Property="CanUserResizeRows" Value="False" /><Setter Property="CanUserSortColumns" Value="False" /><Setter Property="GridLinesVisibility" Value="None" /><Setter Property="IsReadOnly" Value="True" /><Setter Property="RowHeight" Value="{StaticResource DataGridRow.Height}" /><Setter Property="SelectionMode" Value="Single" /></Style></Window.Resources><Grid><!--当前托盘采集数据列表分页显示面板--><Border Grid.Row="3" BorderThickness="1"
BorderBrush="Gray"
CornerRadius="5" Margin="8"
Background="Transparent"><Grid Margin="5"><Grid.RowDefinitions><RowDefinition Height="*"/><RowDefinition Height="30"/></Grid.RowDefinitions><DataGrid Background="Transparent" HorizontalScrollBarVisibility="Disabled" ItemsSource="{Binding ViewSource}" AutoGenerateColumns="false" Margin="2" Style="{StaticResource DataGridStyle1}"><DataGrid.Columns><DataGridTextColumn Binding="{Binding Id}" Header="序号" Width="80"/><DataGridTextColumn Binding="{Binding Name}" Header="姓名" Width="100"/><DataGridTextColumn Binding="{Binding Gender}" Header="性别" Width="80"/><DataGridTextColumn Binding="{Binding Age}" Header="年龄" Width="80"/><DataGridTextColumn Binding="{Binding Email}" Header="邮箱" Width="*"/><DataGridTextColumn Binding="{Binding Phone}" Header="手机号" Width="*"/></DataGrid.Columns></DataGrid><uc:DataPager Grid.Row="1" HorizontalAlignment="Right"  PageIndex="{Binding PageIndex, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" PageSize="{Binding PageSize, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" TotalCount="{Binding TotalCount, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/></Grid></Border></Grid>
</Window>

本文把DataGrid 的属性参数提取出来放在全局配置中。如下所示：

 <Application.Resources><ResourceDictionary><!--界面边框--><SolidColorBrush x:Key="Border.BorderBrush" Color="#50F150" /><sys:Double x:Key="DataGridRow.Height">33</sys:Double><!--  表格外边框线粗细，一般不修改  --><Thickness x:Key="DataGrid.BorderThickness" Bottom="1" Left="1" Right="1" Top="1"/><!--  行边框粗细，一般不修改  --><Thickness x:Key="DataGridRow.BorderThickness" Bottom="0" Left="0" Right="0" Top="1"/><!--  表格外边框颜色  --><SolidColorBrush x:Key="DataGrid.BorderBrush" Color="#E9ECF1" /><!--  列头背景色  --><SolidColorBrush x:Key="ColumnHeader.Background" Color="#F6F7FB" /><!--  列头边框颜色  --><SolidColorBrush x:Key="ColumnHeader.BorderBrush" Color="#E9ECF1" /><vm:ViewModelLocator xmlns:vm="clr-namespace:Wpf_Examples.ViewModels" x:Key="Locator"></vm:ViewModelLocator></ResourceDictionary></Application.Resources>

PageBarViewModel.cs 代码实现如下：

using CommunityToolkit.Mvvm.ComponentModel;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Data;
using Wpf_Examples.Models;namespace Wpf_Examples.ViewModels
{public class PageBarViewModel:ObservableObject{#region 字段public ICollectionView ViewSource { set; get; }int showDataCount = 0;#endregion#region 属性/// <summary>/// 分页页序号/// </summary>private int pageIndex = 1;public int PageIndex{get { return pageIndex; }set { SetProperty(ref pageIndex, value); RefreshView(); }}/// <summary>/// 分页每页显示数据条数/// </summary>private int pageSize;public int PageSize{get { return pageSize; }set { SetProperty(ref pageSize, value); RefreshView(); }}/// <summary>/// 总显示数据条数/// </summary>private int totalCount = 0;public int TotalCount{get { return totalCount; }set { SetProperty(ref totalCount, value); }}/// <summary>/// 需要显示的数据集合/// </summary>private ObservableCollection<DataInfoListModel> dataInfoList = new ObservableCollection<DataInfoListModel>();public ObservableCollection<DataInfoListModel> DataInfoList{get { return dataInfoList; }set { SetProperty(ref dataInfoList, value); }}#endregionpublic PageBarViewModel(){Random random = new Random();for (int i = 0; i < 30; i++){DataInfoListModel dataInfoListModel = new DataInfoListModel();dataInfoListModel.Order = (i + 1);dataInfoListModel.Id = (i + 1); dataInfoListModel.Name = "测试"+(i+1)+"号";dataInfoListModel.Gender = "男";dataInfoListModel.Age = random.Next(10,80);dataInfoListModel.Phone = "17455861459";dataInfoListModel.Email = "1453849257@qq.com";DataInfoList.Add(dataInfoListModel);}TotalCount = DataInfoList.Count;ViewSource = CollectionViewSource.GetDefaultView(DataInfoList);ViewSource.Filter = new Predicate<object>(OnFilterMovie);}private void RefreshView(){showDataCount = 0;ViewSource.Refresh();}/// <summary>/// 数据过滤器/// </summary>/// <param name="obj"></param>/// <returns></returns>private bool OnFilterMovie(object obj){if (DataInfoList.Count == 0) return false;if (showDataCount >= pageSize) return false;if (!(obj is DataInfoListModel info)) return false;bool flag = UserControlLib.Actions.PageBarAction.GetDataByPage(pageSize, PageIndex, DataInfoList.ToList(), info);if (flag) showDataCount++;return flag;}}
}

3、运行效果