title: how to set focus on a textbox or passwordbox
body: <p>how to set focus on this when i log in to my application ,when log in window will open i want to type the password on this without using mouse   </p>
  
  <pre><code>&lt;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"&gt; 
  </code></pre>