在 TextBox 中输入时执行 viewmodels 命令 [英] Executing viewmodels command on enter in TextBox

问题描述

当用户在文本框中按下回车键时，我想在我的视图模型中执行一个命令.该命令在绑定到按钮时有效.

I want to execute a command in my viewmodel when the user presses enter in a TextBox. The command works when bound to a button.

<Button Content="Add" Command="{Binding Path=AddCommand}" />

但我无法从 TextBox 中使用它.我尝试了输入绑定，但它不起作用.

But I can't bring it to work from the TextBox. I tried an Inputbinding, but it didn't work.

<TextBox.InputBindings>
    <KeyBinding Command="{Binding Path=AddCommand}" Key="Enter"/>
</TextBox.InputBindings>

我也尝试将工作按钮设置为默认，但按下回车时它不会被执行.

I also tried to set the working button as default, but it doesn't get executed when enter is pressed.

感谢您的帮助.

推荐答案

我知道我迟到了，但我得到了这个为我工作.尝试使用 Key="Return" 而不是 Key="Enter"

I know I am late to the party, but I got this to work for me. Try using Key="Return" instead of Key="Enter"

这是完整的例子

<TextBox Text="{Binding FieldThatIAmBindingToo, UpdateSourceTrigger=PropertyChanged}">
    <TextBox.InputBindings>
        <KeyBinding Command="{Binding AddCommand}" Key="Return" />
    </TextBox.InputBindings>
</TextBox>

确保在你的绑定中使用UpdateSourceTrigger=PropertyChanged，否则在失去焦点之前属性不会更新，按回车也不会失去焦点...

Make sure to use UpdateSourceTrigger=PropertyChanged in your binding, otherwise the property will not be updated until focus is lost, and pressing enter will not lose focus...

希望这对您有所帮助！

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