動態防止文本框變得焦點

Question

我有一個System.Windows.Controls.TextBox，我想表現如下：當你點擊它，它是動態確定，如果TextBox獲得焦點與否。這裏是包含在完成這一嘗試失敗了玩具應用：

<!-- MainWindow.xaml --> 
<Window x:Class="Focus.MainWindow" 
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
     Title="MainWindow" Height="350" Width="525"> 
    <Grid> 
     <Grid.RowDefinitions> 
      <RowDefinition></RowDefinition> 
      <RowDefinition></RowDefinition> 
     </Grid.RowDefinitions> 
     <Label Name="myLabel" Grid.Row="0" Background="Red"></Label> 
     <TextBox Name="myTextbox" Grid.Row="1" Background="Green"></TextBox> 
    </Grid> 
</Window> 

// MainWindow.xaml.cs 
using System; 
using System.Windows; 
using System.Windows.Input; 

namespace Focus 
{ 
    public partial class MainWindow : Window 
    { 
     public MainWindow() 
     { 
      InitializeComponent(); 
      myTextbox.PreviewGotKeyboardFocus += myTextbox_GotKeyboardFocus; 
     } 

     private static readonly Random myRandom = new Random(); 

     private void myTextbox_GotKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e) 
     { 
      int randomInt = myRandom.Next(0, 2); // 0 or 1 
      myLabel.Content = randomInt; 
      if(randomInt==0) 
      { 
       // PREVENT FOCUS - INSERT CODE HERE. (The line below is a failed attempt.) 
       FocusManager.SetFocusedElement(this, myLabel); 
      } 
     } 
    } 
} 

Answer 1

下面的代碼，似乎這樣的伎倆：

// PREVENT FOCUS - INSERT CODE HERE. 
myLabel.Focusable = true; 
myLabel.Focus(); 
myLabel.Focusable = false; 

我也改變了這行代碼：

myTextbox.PreviewGotKeyboardFocus += myTextbox_GotKeyboardFocus; 

成這樣：

myTextbox.GotFocus += myTextbox_GotKeyboardFocus; 

Answer 2

我希望你知道你迷上了鍵盤焦點（TAB鍵）。

void textBox1_GotFocus(object sender, System.EventArgs e) 
{ 
    if (!this.checkBox1.Checked) 
     this.checkBox1.Focus(); 

    else 
     this.textBox1.Focus(); 

}