Wpf工具包datagrid DataGridCheckBoxColumn on_click事件：

Question

我想獲取選定的行，但selecteditems只有一行。我想得到所有檢查的項目。我想我需要添加事件處理程序時，複選框被清除，然後收集所有。我如何以最佳方式做到這一點？

Answer 1

您是否使用數據綁定來填充您的DataGrid？如果是這樣，將列的選中值綁定到您的支持對象中的布爾值可能是「最好的」（如在：最佳實踐）方式來做到這一點。下面是一些示例代碼：

<Window x:Class="CheckGridSample.Window1" 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    xmlns:tk="clr-namespace:Microsoft.Windows.Controls;assembly=WPFToolkit" 
    Title="Window1" Height="300" Width="300"> 
    <StackPanel> 
     <tk:DataGrid ItemsSource="{Binding}" AutoGenerateColumns="False"> 
      <tk:DataGrid.Columns> 
       <tk:DataGridTextColumn Header="Name" Binding="{Binding Name}" /> 
       <tk:DataGridCheckBoxColumn Header="Selected" Binding="{Binding IsChecked}" /> 
      </tk:DataGrid.Columns> 
     </tk:DataGrid> 
     <Button Content="Which Items Are Checked?" Click="Button_Click" /> 
    </StackPanel> 
</Window> 

---

using System; 
using System.Linq; 
using System.Text; 
using System.Windows; 

namespace CheckGridSample 
{ 
    public partial class Window1 
    { 
     public Window1() 
     { 
      InitializeComponent(); 
      DataContext = new[] 
       { 
        new MyModel {Name = "Able"}, 
        new MyModel {Name = "Baker", IsChecked = true}, 
        new MyModel {Name = "Charlie"} 
       }; 
     } 

     private void Button_Click(object sender, RoutedEventArgs e) 
     { 
      var builder = new StringBuilder(); 
      foreach (var item in ((MyModel[]) DataContext).Where(m => m.IsChecked)) 
       builder.Append(Environment.NewLine + item.Name); 
      MessageBox.Show("Checked:" + builder); 
     } 
    } 

    public class MyModel 
    { 
     public string Name { get; set; } 
     public bool IsChecked { get; set; } 
    } 
}