在 WPF DataGrid 中未检测到 CTRL + C
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CTRL + C is not detected in WPF DataGrid
提问by Mc_Topaz
I have a WPF applicaiton where the MainWindow class have <Window.CommandBindings>and <Window.InputBindings>so I can detect CTRL+ X, CTRL+ Cand CTRL+ Vcommands.
我有一个 WPF 应用程序，其中 MainWindow 类具有<Window.CommandBindings>，<Window.InputBindings>因此我可以检测CTRL+ X、CTRL+C和CTRL+V命令。
The MainWindow contains a DataGrid where I want to select a row and copy the data in the row with the CTRL+ Ccommand. When a row is selected in the DataGrid the CTRL+ Ccommand is no longer detected in the MainWindow. CTRL+ Xand CTRL+ Vare still detected.
MainWindow 包含一个 DataGrid，我想在其中选择一行并使用CTRL+C命令复制该行中的数据。当在 DataGrid 中选择一行时，MainWindow 中不再检测到CTRL+C命令。CTRL+X和CTRL+V仍然被检测到。
I have managed to reproduce this problem with a very simple example. Just copy and paste the code below, it should compile and run on the go. Then do the following:
我设法用一个非常简单的例子重现了这个问题。只需复制并粘贴下面的代码，它就会编译并运行。然后执行以下操作：
- Press either CTRL+ X, CTRL+ Cor CTRL+ V: A popup window will say what command was activated.
- Select a row in the DataGrid and then press CTRL+ C: Nothing will happen.
- CTRL+ Xor CTRL+ Vwill still be detected.
- 按CTRL+ X、CTRL+C或CTRL+ V：弹出窗口将显示激活的命令。
- 在 DataGrid 中选择一行，然后按CTRL+ C：什么都不会发生。
- CTRL+X或CTRL+V仍会被检测到。
MainWindow.XAML code
MainWindow.XAML 代码
<!-- Commands for hot keys -->
<Window.CommandBindings>
<!-- Source -->
<!-- http://stackoverflow.com/questions/4682915/defining-menuitem-shortcuts -->
<CommandBinding Command="Cut" Executed="btnCut_Click" />
<CommandBinding Command="Copy" Executed="btnCopy_Click" />
<CommandBinding Command="Paste" Executed="btnPaste_Click" />
</Window.CommandBindings>
<!-- Hot keys -->
<Window.InputBindings>
<KeyBinding Key="X" Modifiers="Control" Command="Cut" />
<KeyBinding Key="C" Modifiers="Control" Command="Copy" />
<KeyBinding Key="V" Modifiers="Control" Command="Paste" />
</Window.InputBindings>
<Grid>
<DataGrid Name="dgPersons" HorizontalScrollBarVisibility="Auto" AutoGenerateColumns="False" IsReadOnly="True" SelectionMode="Extended" GridLinesVisibility="None" Background="White" Margin="75,59,35,104">
<DataGrid.CellStyle>
<Style TargetType="DataGridCell">
<Setter Property="BorderThickness" Value="0" />
<Setter Property="FocusVisualStyle" Value="{x:Null}" />
</Style>
</DataGrid.CellStyle>
<DataGrid.Columns>
<!-- Name -->
<DataGridTextColumn Header="Name" Width="100" Binding="{Binding Name, Mode=OneTime}" />
</DataGrid.Columns>
</DataGrid>
</Grid>
MainWindow.cs code
MainWindow.cs 代码
public partial class MainWindow : Window
{
ObservableCollection<Person> persons = new ObservableCollection<Person>();
public MainWindow()
{
InitializeComponent();
Person person1 = new Person("Person1");
Person person2 = new Person("Person2");
Person person3 = new Person("Person3");
persons.Add(person1);
persons.Add(person2);
persons.Add(person3);
dgPersons.ItemsSource = persons;
}
private void btnCut_Click(object sender, ExecutedRoutedEventArgs e)
{
MessageBox.Show("CUT command activated");
}
private void btnCopy_Click(object sender, ExecutedRoutedEventArgs e)
{
MessageBox.Show("COPY command activated");
}
private void btnPaste_Click(object sender, ExecutedRoutedEventArgs e)
{
MessageBox.Show("PASTE command activated");
}
}
public class Person
{
string name;
public Person(string name)
{
this.name = name;
}
public string Name
{
get { return name; }
}
}
How do I get CTRL+ Cworking when a row is selected in the DataGrid?
在 DataGrid 中选择一行时，我如何获得CTRL+C工作？
回答by Mc_Topaz
I solved it by including Command and Input Bindings in the DataGrid itself:
我通过在 DataGrid 本身中包含命令和输入绑定来解决它：
<DataGrid>
<!-- This is required to handle CTRL + C when something is selected in the DataGrid -->
<DataGrid.CommandBindings>
<CommandBinding Command="Copy" Executed="CopyCommand" />
</DataGrid.CommandBindings>
<!-- This is required to handle CTRL + C when something is selected in the DataGrid -->
<DataGrid.InputBindings>
<KeyBinding Key="C" Modifiers="Control" Command="Copy" />
</DataGrid.InputBindings>
</DataGrid>
Then a callback in the code to handle the event from CTRL+ C.
然后是代码中的回调来处理来自CTRL+的事件C。
/// <summary>
/// Handle CTRL + C callback
/// </summary>
private void CopyCommand(object sender, ExecutedRoutedEventArgs e)
{
// Do copy here
}
回答by Name Collision
I had this same problem, found this article, and it helped me a lot. For anyone who has this problem, you may be able to do without the InputBindingpart of this for Copy / Ctrl+C. However, you'll need both the CommandBindingand the InputBindingfor Ctrl+A (typically Select All) if you want to do that kind of thing. I wouldn't be surprised if other common key combos require InputBindingsas well.
我遇到了同样的问题，找到了这篇文章，它对我帮助很大。对于遇到此问题的任何人，您可以不用InputBinding复制/Ctrl+C 的部分。但是，如果您想执行此类操作，则需要同时使用CommandBinding和InputBindingCtrl+A（通常为全选）。如果其他常用键组合也需要InputBindings，我不会感到惊讶。
For some reason, though, Ctrl+X (Cut) is just fine without a CommandBindingor InputBinding. Wacky. There are some bugs or at least inconsistencies like this in WPF that Microsoft has just never gotten around to fixing.
但是，出于某种原因，Ctrl+X（剪切）在没有CommandBinding或 的情况下也很好InputBinding。古怪。在 WPF 中存在一些错误或至少是这样的不一致，Microsoft 从未解决过这些问题。
In any case, the event handler mentioned is always necessary as part of the command syntax pattern used in WPF, and there should normally be a matching CanExecuteCopyCommand(object sender, CanExecuteRoutedEventArgs e) { }as well.
在任何情况下，提到的事件处理程序始终是 WPF 中使用的命令语法模式的一部分，通常也应该有一个匹配项CanExecuteCopyCommand(object sender, CanExecuteRoutedEventArgs e) { }。
