if (e.Source is ICommandSource) return; // Ignore the ApplicationUndo command. if (e.Command == MonitorCommands.ApplicationUndo) return; // Could filter for commands you want to add to the stack // (for example, not selection events). TextBox txt = e.Source as TextBox; if (txt !=...
<TextBlock Grid.Row="1" Width="200" Text="{Binding Path=DisplayName}"></TextBlock> <Button Grid.Row="2" x:Uid="btnSend" x:Name="btnSend" FontSize="16" Content="提交" Width="100" Height="50" Margin="0,0,0,5" Command="{Binding DelegateCommand}" > </Button> </Grid></...
我们定义一个DelegateCommand实现ICommand接口: publicclassDelegateCommand:ICommand{privateAction _execute;privateFunc<bool> _canExecute;publicDelegateCommand(Action executeMethod){_execute = executeMethod;}publicDelegateCommand(Action executeMethod, Func<bool> canExecute):this(executeMethod){this._canExecute = canExecu...
<Windowx:Class="Commands.CustomCommand"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:local="clr-namespace:Commands"Title="CustomCommand"Height="300"Width="300"><Window.CommandBindings><CommandBindingCommand="local:Data...
最后,我们再将事件绑定上这个Command: <Button Content="更新" Command="{Binding UpdateName}" Margin="20"/> 运行一下,看结果。我们成功将事件分离了出来。 看到上面的结果,似乎目前为止我们已经很好的解决了所有的问题。我们看到运行的数据,事件都是绑定的,实现了界面的完美分离。实际在处理问题是好像需要考虑通...
RoutedCommand 為ICommand 的WPF 實作。 執行 RoutedCommand 時,命令目標上會引發 PreviewExecuted 和Executed 事件,通道和泡泡會通過元素樹狀結構,就像是其他輸入。 如果未設定命令目標,則具有鍵盤焦點的項目就是命令目標。 執行命令的邏輯會附加至 CommandBinding。 當 Executed 事件到達該特定命令的 CommandBinding 時,會...
The example shows how to associate a RoutedCommand to a Button, create a CommandBinding, and create the event handlers which implement the RoutedCommand. For more information on commanding, see the Commanding Overview. Example The first section of code creates the user interface (UI), which ...
void binding_Executed(object sender, ExecutedRoutedEventArgs e) { MessageBox.Show("New command triggered by " + e.Source.ToString()); } 1. 2. 3. 4. 5. 6. 7. 8. 尽管习惯上为窗口创建所有绑定,但CommandBindings属性实际上是在UIElement基类中定义的,所以任何元素都支持该属性,但为了得到最大的...
The command is the action to be executed. The command source is the object which invokes the command. The command target is the object that the command is being executed on. The command binding is the object which maps the command logic to the command. In the previous example, the Paste ...
http://www.codearsenal.net/2013/12/wpf-multibinding-example.html#.WnUeaFWWaUk 方法三:其他Trick 思路:用其他控件的属性来记录数据。传参时传递按钮控件自身,再通过按钮控件的视觉树布局找到找到绑定了其他数据的控件。 XAML: <Grid><ButtonContent="测试按钮"Command="{Binding RelativeSource={RelativeSource Ance...