Hide automatically the touch keyboard when the textbox lost focus in C#

Question

I have an small application in WPF with two textBox. One of them must show the Touch Keyboard when it gets focus. It is works correclty using the next code:

Process theTouchKeyboardProcess = null;
...

private void textBoxA_GotFocus(object sender, RoutedEventArgs e)
{
   theTouchKeyboardProcess = Process.Start(@"C:\Program Files\Common Files\Microsoft Shared\ink\TabTip.exe");
}

The problem is that I want to hide the touch keyboard when the another one textBox gets focus. I have tried to do this:

private void textBoxA_LostFocus(object sender, RoutedEventArgs e)
{
   try
   {
      theTouchKeyboardProcess.Kill();
   }
   catch (Exception ex)
   {
      Console.WriteLine(ex.StackTrace);
   }         
}

But It launches an exception.

The question is, What is the best way to do this correcty?

Thanks.

mookrs mookrs · Accepted Answer · 2014-12-29T03:26:16

I don't know what is the best way, but I used the following code in my project, it just worked.

Process[] processes = Process.GetProcessesByName("TabTip");
foreach (Process process in processes)
{
    process.Kill();
}

Hide automatically the touch keyboard when the textbox lost focus in C#

1 Answers