wpf - 如何将焦点设置在文本框或密码框上

Question

当我登录到我的应用程序时如何设置焦点，当登录窗口打开时我想在不使用鼠标的情况下在此输入密码

<PasswordBox x:Name="passwordbox"  Grid.Row="1" Grid.Column="1"  Margin="5,35,5,5" Width="280"  Height="27" app:PasswordBoxAssistant.BindPassword="true" app:PasswordBoxAssistant.BoundPassword="{Binding TechUserModel.UserId,Mode=TwoWay,ValidatesOnDataErrors=True,UpdateSourceTrigger=PropertyChanged}"  HorizontalAlignment="Left" VerticalAlignment="Center"> 

Answer 1

我已经针对这种情况尝试了各种解决方案，我发现最有效的是使用 FocusManager.FocusedElement:

<Window x:Class="StackOverflow.Test"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Test" Height="300" Width="300"
        FocusManager.FocusedElement="{Binding ElementName=Box}">
    <Grid>
        <TextBox x:Name="Box"/>
    </Grid>
</Window>