WPF DataGrid控件的使用

下面以一个例子说明DataGrid控件的使用方法：

一、程序框架
使用了MVVM Light框架

二、主要代码部分（使用MVVM Light框架）：
1.主窗体xaml代码 (MainWindow.xaml)：

<Window x:Class="WpfApp2.MainWindow"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:WpfApp2"mc:Ignorable="d"Title="MainWindow" Height="450" Width="800"><Grid><Grid.RowDefinitions><RowDefinition Height="60"></RowDefinition><RowDefinition></RowDefinition></Grid.RowDefinitions><StackPanel Orientation="Horizontal" Grid.Row="0"><TextBlock Text="搜索条件：" VerticalAlignment="Center" Margin="10 0 0 0"></TextBlock><TextBox Width="200" Height="25" Margin="10 0 0 0" VerticalContentAlignment="Center" Text="{Binding Search}"></TextBox><Button Content="查找" Width="70" Height="25" Margin="10 0 0 0" Command="{Binding QueryCommand}"></Button><Button Content="重置" Width="70" Height="25" Margin="10 0 0 0" Command="{Binding ResetCommand}"></Button><Button Content="新增" Width="70" Height="25" Margin="10 0 0 0" Command="{Binding AddCommand}"></Button></StackPanel><DataGrid Grid.Row="1" ColumnWidth="*" AutoGenerateColumns="False" CanUserAddRows="False" Margin="10" ItemsSource="{Binding GridModelList}"><DataGrid.Columns><DataGridTextColumn Header="序号" Binding="{Binding Id}"/><DataGridTextColumn Header="姓名" Binding="{Binding Name}"/><DataGridTemplateColumn Header="操作"><DataGridTemplateColumn.CellTemplate><DataTemplate><StackPanel Orientation="Horizontal"><Button Content="修改" Width="60" Height="25" Background="White" Foreground="Black" CommandParameter="{Binding Id}" Command="{Binding DataContext.EditCommand,RelativeSource={RelativeSource Mode=FindAncestor,AncestorType=DataGrid}}"></Button><Button Content="删除" Width="60" Height="25" Background="AliceBlue" Foreground="Red" CommandParameter="{Binding Id}" Command="{Binding DataContext.DelCommand,RelativeSource={RelativeSource Mode=FindAncestor,AncestorType=DataGrid}}"></Button></StackPanel></DataTemplate></DataGridTemplateColumn.CellTemplate></DataGridTemplateColumn></DataGrid.Columns></DataGrid></Grid>
</Window>

2.ViewModel类代码（MainViewModel.cs）：

public class MainViewModel : ViewModelBase{public MainViewModel(){mylocalDB = new localDB();QueryCommand = new RelayCommand(Query);ResetCommand = new RelayCommand(()=>{Search = string.Empty;this.Query();});EditCommand = new RelayCommand<int>(t => Edit(t));DelCommand = new RelayCommand<int>(t => Del(t));AddCommand = new RelayCommand(Add);}localDB mylocalDB;private string search = string.Empty;public string Search{get { return search; }set { search = value;RaisePropertyChanged(); }}private ObservableCollection<Student> gridModelList;public ObservableCollection<Student> GridModelList{get { return gridModelList; }set { gridModelList = value;RaisePropertyChanged(); }}#region Commandpublic RelayCommand QueryCommand { get; set; }public RelayCommand ResetCommand { get; set; }public RelayCommand<int> EditCommand { get; set; }public RelayCommand<int> DelCommand { get; set; }public RelayCommand AddCommand { get; set; }#endregionpublic void Query(){var models = mylocalDB.GetStudentsByName(Search);GridModelList = new ObservableCollection<Student>();if(models != null){models.ForEach(arg =>{GridModelList.Add(arg);});}}public void Edit(int id){var model = mylocalDB.GetStudentById(id);if(model != null){UserView view = new UserView(model);var res = view.ShowDialog();if(res.Value){var newModel =GridModelList.FirstOrDefault(t=>t.Id == model.Id);if(newModel != null){newModel.Name = model.Name;}}}}public void Add(){Student stu = new Student();UserView view = new UserView(stu);var res = view.ShowDialog();if (res.Value){stu.Id = gridModelList.Max(t => t.Id) + 1; ;mylocalDB.AddStudent(stu);this.Query();}}public void Del(int id){var model = mylocalDB.GetStudentById(id);if (model != null){var res = MessageBox.Show($"确认删除当前用户:{model.Name}?","操作提示：",MessageBoxButton.OK,MessageBoxImage.Question);if(res == MessageBoxResult.OK){mylocalDB.DelStudent(model.Id);}this.Query();}}}

3.主窗体后台代码（MainWindow.xaml.cs）：

public partial class MainWindow : Window{public MainWindow(){InitializeComponent();MainViewModel viewModel = new MainViewModel();viewModel.Query();this.DataContext = viewModel;}}

4.Student类：

public class Student:ViewModelBase{private int id;private string name;public int Id{get { return id; }set {id = value;RaisePropertyChanged();}}public string Name{get { return name; }set{name = value;RaisePropertyChanged();}}}

5.localDB类（这里充当数据库功能）

public class localDB{public localDB(){Init();}private List<Student> students;private void Init(){students = new List<Student>();for (int i = 0; i < 30; i++){students.Add(new Student(){Id = i,Name = $"Sample{i}"}) ;}}public List<Student> GetStudents(){return students;}//新增public void AddStudent(Student stu){students.Add(stu);}//删除public void DelStudent(int id){var model = students.FirstOrDefault(t => t.Id == id);if(model!=null){students.Remove(model);}}public List<Student> GetStudentsByName(string name){return students.Where(q=>q.Name.Contains(name)).ToList();}public Student GetStudentById(int id){var model = students.FirstOrDefault(t=>t.Id == id);if(model != null){return new Student() { Id = model.Id,Name = model.Name};}return null;}}

三、运行效果：

其他示例一：
如果不用MVVM，DataGrid中的按钮也可以Tag来绑定数据，用事件触发：

 <DataGrid Grid.Row="1" Name="grd" ItemsSource="{Binding FailLists}" Margin="10" HorizontalContentAlignment="Center" AutoGenerateColumns="False" IsReadOnly="True" CanUserAddRows="False" CanUserDeleteRows="False" CanUserSortColumns="False" CanUserResizeColumns="False" CanUserReorderColumns="False" LoadingRow="Grd_LoadingRow" HeadersVisibility ="Column"><DataGrid.Columns><DataGridTemplateColumn Header="No." Width="40"><DataGridTemplateColumn.CellTemplate><DataTemplate><TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" Text="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type DataGridRow}}, Path=Header}" /></DataTemplate></DataGridTemplateColumn.CellTemplate></DataGridTemplateColumn><DataGridTextColumn Header="测试项路径" Width="*" Binding="{Binding FailPath}" ElementStyle="{StaticResource DataGridTextColumnCenterSytle}"/><DataGridTemplateColumn Header="操作" Width="120"><DataGridTemplateColumn.CellTemplate><DataTemplate><StackPanel Orientation="Horizontal"><!--<Button Content="Run" Width="40" Height="20" Margin="5 0 10 0" Background="#3CB371" Foreground="White" CommandParameter="{Binding PrjPath}" Command="{Binding DataContext.EditCommand,RelativeSource={RelativeSource Mode=FindAncestor,AncestorType=DataGrid}}"></Button>--><Button Name="btn_IDERun" Content="IDE运行" Tag="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type DataGridRow}}, Path=Header}"  Width="60" Height="20" Margin="2 0 0 0" Style="{StaticResource btnCheck}" Background="#3CB371" Cursor="Hand" Foreground="White" Click="Btn_IDERun_Click"/><Button Name="btn_ErrView" Content="LOG" Tag="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type DataGridRow}}, Path=Header}"  Width="40" Height="20" Margin="3 0 0 0" Style="{StaticResource btnCheck}" Background="#FF9900" Cursor="Hand" Foreground="White" Click="Btn_ErrView_Click"/></StackPanel></DataTemplate></DataGridTemplateColumn.CellTemplate></DataGridTemplateColumn><DataGridTextColumn Header="结果" Width="50" Binding="{Binding TestResult}" ElementStyle="{StaticResource DataGridTextColumnCenterSytle_1}"/></DataGrid.Columns></DataGrid>

样式资源：

 <Style x:Key="DataGridTextColumnCenterSytle" TargetType="{x:Type TextBlock}"><!--<Setter Property="HorizontalAlignment" Value="Center" />--><Setter Property="VerticalAlignment" Value="Center" /></Style><Style x:Key="DataGridTextColumnCenterSytle_1" TargetType="{x:Type TextBlock}"><Setter Property="HorizontalAlignment" Value="Center" /><Setter Property="VerticalAlignment" Value="Center" /><Setter Property="FontWeight" Value="Bold"/><Style.Triggers><DataTrigger Binding="{Binding TestResult}" Value="Pass"><Setter Property="Foreground"  Value="Green"></Setter></DataTrigger><DataTrigger Binding="{Binding TestResult}" Value="Fail"><Setter Property="Foreground" Value="Red"></Setter></DataTrigger></Style.Triggers></Style>

其他实例二：
（显示部分按钮）

<Grid Grid.Row="2" Margin="10 0 10 10"><DataGrid Name="grd" ItemsSource="{Binding JumpLists}" Margin="0,4" Grid.Row="1" FontSize="12"AutoGenerateColumns="False" IsReadOnly="True" CanUserAddRows="False" CanUserDeleteRows="False" CanUserSortColumns="False" CanUserResizeColumns="False" CanUserReorderColumns="False" HeadersVisibility="Column"><DataGrid.Columns><!--<DataGridTextColumn Header="系列" Width="100" Binding="{Binding Series}" CanUserResize="False" CanUserSort="False"/>--><DataGridTextColumn Header="芯片" Width="100" Binding="{Binding ChipName}"  ElementStyle="{StaticResource DataGridTextColumnCenterSytle}"/><DataGridTextColumn Header="封装" Width="100" Binding="{Binding Package}"  ElementStyle="{StaticResource DataGridTextColumnCenterSytle}"/><DataGridTextColumn Header="跳线方式" Width="170" Binding="{Binding JumpMode}"  ElementStyle="{StaticResource DataGridTextColumnCenterSytle}"/><DataGridTextColumn Header="跳线板短接点" Width="*" Binding="{Binding Jmup7Short}"  ElementStyle="{StaticResource DataGridTextColumnCenterSytle}"/><DataGridTemplateColumn Header="短接图" Width="90"><DataGridTemplateColumn.CellTemplate><DataTemplate><StackPanel Name="sp_Func" Orientation="Horizontal"><Button Name="btn_SV03" Content="SV03" Width="35" Height="20" Margin="5 0 5 0" Style="{StaticResource Select_btn}" CommandParameter="{Binding Jmup7Short}" Command="{Binding DataContext.SV03Command,RelativeSource={RelativeSource Mode=FindAncestor,AncestorType=DataGrid}}" Click="Btn_SV03_Click"></Button><Button Name="btn_SV04" Content="SV04" Width="35" Height="20" Style="{StaticResource Select_btn}" CommandParameter="{Binding Jmup7Short}" Command="{Binding DataContext.SV04Command,RelativeSource={RelativeSource Mode=FindAncestor,AncestorType=DataGrid}}" Click="Btn_SV04_Click"></Button></StackPanel><DataTemplate.Triggers><DataTrigger Binding="{Binding ViewPart}" Value="True"><Setter Property="Visibility" Value="Visible"/></DataTrigger><DataTrigger Binding="{Binding ViewPart}" Value="False"><Setter Property="Visibility" Value="Collapsed"/></DataTrigger></DataTemplate.Triggers></DataTemplate></DataGridTemplateColumn.CellTemplate></DataGridTemplateColumn></DataGrid.Columns></DataGrid></Grid></Grid>

其他实例三：

<DataGrid ItemsSource="{Binding ProductsList}" AutoGenerateColumns="False" CanUserAddRows="False" CanUserSortColumns="False"CanUserResizeColumns="False" CanUserReorderColumns="False" HeadersVisibility="Column" AlternationCount="2" IsReadOnly="True"><DataGrid.ColumnHeaderStyle><Style TargetType="DataGridColumnHeader"><Setter Property="HorizontalContentAlignment" Value="Center"/><Setter Property="BorderThickness" Value="1"></Setter><Setter Property="Background" Value="#FFE699"></Setter><Setter Property="FontSize" Value="16"/><Setter Property="Height" Value="30"/><!--设置边框笔刷（BorderBrush）--><Setter Property="BorderBrush"><!--值--><Setter.Value><!--色刷，Opacity：透明度--><SolidColorBrush Color="#333" Opacity="0.1"></SolidColorBrush></Setter.Value></Setter></Style></DataGrid.ColumnHeaderStyle><DataGrid.RowStyle><Style TargetType="{x:Type DataGridRow}"><Style.Triggers><Trigger Property="ItemsControl.AlternationIndex"Value="0"><Setter Property="Background" Value="#FFFFFFFF" /></Trigger><Trigger Property="ItemsControl.AlternationIndex"Value="1"><Setter Property="Background" Value="#FFC5E0B3" /></Trigger></Style.Triggers></Style></DataGrid.RowStyle><DataGrid.Columns><DataGridTextColumn Width="120" Header="产品名称" Binding="{Binding Name}" ElementStyle="{StaticResource DataGridTextColumnCenterSytle}"/><DataGridTextColumn Width="90" Header="触控通道" Binding="{Binding Pins}" ElementStyle="{StaticResource DataGridTextColumnCenterSytle}"/><DataGridTextColumn Width="90" Header="输出型态" Binding="{Binding Out}" ElementStyle="{StaticResource DataGridTextColumnCenterSytle}"/><DataGridTextColumn Width="100" Header="封装" Binding="{Binding Package}" ElementStyle="{StaticResource DataGridTextColumnCenterSytle}"/><DataGridTextColumn Width="*" Header="功能描述" Binding="{Binding Describe}" ElementStyle="{StaticResource DataGridTextColumnCenterSytle}"/><DataGridTextColumn Width="100" Header="校验码" Binding="{Binding Checksum}" ElementStyle="{StaticResource DataGridTextColumnCenterSytle}"/><DataGridTemplateColumn Header="文档下载" Width="80"><DataGridTemplateColumn.CellTemplate><DataTemplate><Grid><Button Name="bt_downPDK" Style="{StaticResource down_btn}" Width="20" Height="20" Cursor="Hand" Tag="{Binding Name}" Click="Bt_downPDK_Click" ><Button.Background><ImageBrush ImageSource="Images/download.png"/></Button.Background></Button><TextBlock Name="tb_line" Text="-" FontSize="14" HorizontalAlignment="Center" VerticalAlignment="Center"/></Grid><DataTemplate.Triggers><DataTrigger Binding="{Binding Download}" Value="true"><Setter TargetName="bt_downPDK" Property="Visibility" Value="Visible"/><Setter TargetName="tb_line" Property="Visibility" Value="Collapsed"/></DataTrigger><DataTrigger Binding="{Binding Download}" Value="false"><Setter TargetName="bt_downPDK" Property="Visibility" Value="Collapsed"/><Setter TargetName="tb_line" Property="Visibility" Value="Visible"/></DataTrigger></DataTemplate.Triggers></DataTemplate></DataGridTemplateColumn.CellTemplate></DataGridTemplateColumn></DataGrid.Columns></DataGrid>

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