使用HandyControl实现多选的DataGrid

本文在MVVM模式先实现了基于HandyControl的DataGrid多选，同时展示了为DataGrid单元格显示不同颜色的方法，开发环境为：WPF + Prism + HandyControl。

  1、添加多选列

"Auto">
    
        
    
    
        
            "{Binding IsSelected, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
                      HorizontalAlignment="Center" VerticalAlignment="Center"/>
        
    

2、为Model添加IsSelected属性

public class Student : BindableBase
{
    public string Name { get; set; }
    public int Score { get; set; }
    public Brush ScoreBrush => Score >= 60 ? PassedBrush : NotPassedBrush;

    public bool IsSelected
    {
        get => _isSelected;
        set => SetProperty(ref _isSelected, value);
    }

    private bool _isSelected;

    private static readonly Brush PassedBrush = new SolidColorBrush(Colors.Green);
    private static readonly Brush NotPassedBrush = new SolidColorBrush(Colors.Red);
}

3、为ViewModel添加全选响应代码

public class StudentWindowViewModel : BindableBase
{
    public ObservableCollection StudentList { get; }

    public bool CheckAll
    {
        get => _checkAll;
        set
        {
            SetProperty(ref _checkAll, value);
            foreach (var item in StudentList)
            {
                item.IsSelected = value;
            }
        }
    }

    private bool _checkAll; //全选

    public StudentWindowViewModel()
    {
        StudentList = new ObservableCollection()
        {
            new Student() {Name = "Student1", Score = 80},
            new Student() {Name = "Student2", Score = 60},
            new Student() {Name = "Student3", Score = 57}
        };
    }
}

4、DataGrid完整代码

"{Binding StudentList}"
          Background="Transparent" BorderThickness="1"
          hc:DataGridAttach.CanUnselectAllWithBlankArea="True" 
          hc:DataGridAttach.ShowRowNumber="True"
          HeadersVisibility="All" RowHeaderWidth="40" AutoGenerateColumns="False" 
          SelectionMode="Single" SelectionUnit="FullRow">
    
        "Auto">
            
                
            
            
                
                    "{Binding IsSelected, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
                              HorizontalAlignment="Center" VerticalAlignment="Center"/>
                
            
        
        "True" CanUserSort="False" Binding="{Binding Name}" Header="姓名"/>
        
        "True" CanUserSort="False" Header="分数">
            
                
                    "{Binding Score}" Foreground="{Binding ScoreBrush}"/>