Question

我正在创建一个将文本框控件作为目标的命令。

创建命令的代码：

public class Commands
{
    public static RoutedCommand Appender;

    static Commands()
    {
        Appender = new RoutedCommand();
    }

    public static void AppenderExecuted(object target, ExecutedRoutedEventArgs e)
    {
        System.Windows.Controls.TextBox targetTbox = target as System.Windows.Controls.TextBox;
        if (targetTbox != null)
        {
            targetTbox.Text += "AppendedText";
        }
    }
}

XAML：

<StackPanel Name="span" FocusManager.IsFocusScope="True">
    <Menu IsMainMenu="True">
        <MenuItem Header="Tools">
            <MenuItem Header="_Append" Name="menuAppend" />
        </MenuItem>
    </Menu>
    <TextBox Height="100"  Name="txtEdit"></TextBox>
</StackPanel>

CS：窗口构造函数：

        //create bindings
        CommandBinding bindingTM = new CommandBinding(Commands.Appender, Commands.AppenderExecuted);

        //[THIS DOESN'T WORK]
        this.CommandBindings.Add(bindingTM);

        //[THIS WORKS]
        txtEdit.CommandBindings.Add(bindingTM);

        //associate command
        menuAppend.Command = Commands.Appender;

我希望能够在Window上的任何TextBox上使用Appender命令，而无需为每个TextBox添加命令绑定。

- ＆GT;为什么不将命令绑定添加到Window不起作用？
- ＆GT;任何解决方案？

Answer 1

尝试：

public static void AppenderExecuted(object target, ExecutedRoutedEventArgs e)  {  
    System.Windows.Controls.TextBox targetTbox = e.OriginalSource as System.Windows.Controls.TextBox;  
    if (targetTbox != null) {  
            targetTbox.Text += "AppendedText";  
    }  
}

WPF命令 - 更改目标控件的属性

1 个答案: