Question

我在WPF中有一个数据网格，我想在你可以运行一个事件时失去焦点。我尝试了一些事件，但离开单元格或结束一行被激活，我想要的是，当它完全被datagrid激活时，无法找到适合的事件。

Answer 1

在DataGrid和DataGridCell上尝试LostFocus事件，检查下面的代码并在事件DataGrid_LostFocus，OnCellLostFocus和OnCellGotFocus中保留断点，单击一个单元格然后单击另一个单元格，看看事件是这样执行的，OnCellLostFocus - - ＆gt; OnCellGotFocus - - ＆gt; DataGrid_LostFocus 也许这可以帮助你试试......

更新的答案：

DataGrid上的LostFocus事件就足够了，请查看下面的修改后的答案

<Window x:Class="WpfApplication1.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:WpfApplication1"
        mc:Ignorable="d"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition/>
            <ColumnDefinition/>
        </Grid.ColumnDefinitions>
        <DataGrid x:Name="MyDataGrid"
                  LostFocus="DataGrid_LostFocus" 
                  ItemsSource="{Binding Persons}">
            <DataGrid.Columns>
                <DataGridTextColumn Header="FirstName" Width="*"/>
                <DataGridTextColumn Header="LastName" Width="*"/>
            </DataGrid.Columns>
        </DataGrid>

        <TextBox Grid.Column="1"/>
    </Grid>
</Window>

namespace WpfApplication1
{
    using System.Collections.Generic;
    using System.Windows;

    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public List<Person> Persons { get; set; }

        public MainWindow()
        {
            InitializeComponent();
            DataContext = this;
            Persons = new List<Person>
            {
                new Person { FirstName = "First", LastName = "Last" },
                new Person { FirstName = "First", LastName = "Last" }
            };
        }

        private void DataGrid_LostFocus(object sender, RoutedEventArgs e)
        {
            if (!MyDataGrid.IsKeyboardFocusWithin)
            {
                MessageBox.Show("DataGrid LostFocus called");
            }
        }
    }

    public class Person
    {
        public string FirstName { get; set; }

        public string LastName { get; set; }
    }
}

有没有办法验证这不使用数据网格？或者这完全失去了焦点？

1 个答案: