将焦点设置在xaml wpf中的文本框中 [英] Set the focus on a textbox in xaml wpf

问题描述

尽管在这个论坛和其他一些帖子上，我找不到一些东西，告诉我如何把焦点放在 TextBox 。

我有一个userControl与许多标签和文本框。当表单被加载时，我想要一个特定的文本框有焦点。

我已经设置了tabIndex，但似乎没有工作。 b
$ b

有什么建议？

解决方案

您可以使用 FocusManager。 FocusedElement 附属属性为此目的。

 < StackPanel Orientation =VerticalFocusManager.FocusedElement = {Binding ElementName = TxtB}> 
< TextBox x：Name =TxtAText =A/> 
< TextBox x：Name =TxtBText =B/> 
< / StackPanel> 
  

您也可以使用 TxtB.Focus（）在你的代码后面，如果你不想在XAML中做到这一点。

Despite some posts on this forum and others i cannot find something that tells me how to set the focus on a TextBox.

I have a userControl with many labels and textBoxes. When the form is loaded I want the a particular textBox to have the focus.

I have set the tabIndex but that didn't seem to work.

Any suggestions?

解决方案

You can use the FocusManager.FocusedElement attached property for this purpose. Here's a piece of code that set the focus to TxtB by default.

<StackPanel Orientation="Vertical" FocusManager.FocusedElement="{Binding ElementName=TxtB}">
    <TextBox x:Name="TxtA" Text="A" />
    <TextBox x:Name="TxtB" Text="B" />
</StackPanel>

You can also use TxtB.Focus() in your code-behind if you don't want to do this in XAML.

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