C# WPF show in task bar not working in real time?

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1.00/5 (1 vote)

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this is my code

C#

private void checkBox1_Checked(object sender, RoutedEventArgs e)
  {
      if (checkBox1.IsChecked == true)
      {
          this.ShowInTaskbar = true;
      }
      else if (checkBox1.IsChecked == false)
      {
          this.ShowInTaskbar = false;

      }
System.Diagnostics.Process.Start(Application.ResourceAssembly.Location);
this.Close();

for some reason the check box doesn't check its self, and the only reason I am restarting the program is because the task bar doesn't disappear, and thats not even working, this is what is ment too happen, check box is checked, the window is seen in the task bar and when its not checked its not ment be in the task bar, can some on please help me out? everyone seems to be like bill gates on this site and can do anything.

Posted 30-Jul-11 2:50am

C.CoderCreator

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Sergey Alexandrovich Kryukov · Answer 1 · 2011-08-01T19:38:00

Not true! It does work as you would expect. Your problem is: you handle Checked and do not handle Unchecked.

This is a complete solution (assuming you created a check box checkBoxShowInTaskbar in XAML):

C#

public partial class MyWindow : Window {
    public MyWindow() {
        InitializeComponent();
        checkBoxShowInTaskbar.Checked += (sender, eventArgs) =>
            { this.ShowInTaskbar = true; };
        checkBoxShowInTaskbar.Unchecked += (sender, eventArgs) =>
            { this.ShowInTaskbar = false; };
    } //MyWindow
} //class MyWindow

The solution is tested; it works.

—SA

Shameel · Answer 2 · 2011-07-30T03:03:00

Solution 1

I believe, ShowInTaskbar must be set before the form is shown, it has no effect after a form is already shown. Restarting the program will only create a new process which which take its settings from your xaml file.

By the way, don't you think you can write your code in just one line?, like this:

C#

s.ShowInTaskbar = checkBox1.IsChecked;

Posted 30-Jul-11 3:03am

Shameel

Comments

Sergey Alexandrovich Kryukov 2-Aug-11 1:44am

Sorry, I just had to vote one this time, as you did wrong thing: posted unchecked information.

First, what you say about "after a form is already shown" is simply not true -- it does update task bar as expected during run time.

Also, assignment

s.ShowInTaskbar = checkBox1.IsChecked

will not compile! This is because IsChecked is not Boolean, it is "bool?". Remember, this is WPF, not Forms where it would work.

The OP's problem is completely different; I explained it and posted a working ***tested*** solution -- please see it.

The question is not so obvious; please understand: you really need to test solution and check up facts in such cases, to make sure what you say is true.

Thank you for understanding.
--SA

Member 7847528 17-May-14 15:09pm

you can write it in one statement as:

this.ShowInTaskbar = checkBox1.IsChecked.Value;