c# - 在 CurrentCellChanged 上获取 WPF DataGrid 的单元格内容

Question

我有一个 WPF DataGrid。我想在用户编辑后获取 cell 值。 DataGrid 已经填充了数据。用户可以编辑以前的数据。为了保存数据，我想从 event handler

获取 cell 数据

给我一​​个简单的代码来完成它。建议一个事件处理程序。

Answer 1

您可以使用 CellEditEnding 事件在用户编辑单元格时得到通知。

这个简单的程序说明了这一点:

XAML

<Window x:Class="WpfApplication1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:WpfApplication1"
        Title="MainWindow" Height="500" Width="500">
    <Grid>
        <DataGrid x:Name="grid" CellEditEnding="cellEditEnding" />
    </Grid>
</Window>

代码隐藏

public partial class MainWindow : Window
{
    public class MyClass
    {
        public string Prop1 { get; set; }
        public string Prop2 { get; set; }
        public string Prop3 { get; set; }
    }

    public MainWindow()
    {
        InitializeComponent();

        var objects = new[] 
        { 
            new MyClass { Prop1 = "Object1", Prop2 = "Test1", Prop3 = "Hello" },
            new MyClass { Prop1 = "Object2", Prop2 = "Test2", Prop3 = "Goodbye" },
            new MyClass { Prop1 = "Object3", Prop2 = "Test3", Prop3 = "Welcome" }
        };

        grid.ItemsSource = objects;
    }

    private void cellEditEnding(object sender, DataGridCellEditEndingEventArgs e)
    {
        //Only handles cases where the cell contains a TextBox
        var editedTextbox = e.EditingElement as TextBox;

        if (editedTextbox != null)
            MessageBox.Show("Value after edit: " + editedTextbox.Text);
    }
}