Closing a Form Whose Show in Taskbar property is set to False.

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SQL-Server-2005

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I am developing a windows application using c#. I have one form open and on button click of form 1, I am opening form 2, i.e. both Forms form 1 and form 2 are opened. Form2 Show in task-bar property is set to false. I want to close or hide the form 2 on button click event of form 1. I tried to use Hide and Close Method, but the form 2 is still displayed.
Any Help !!!

Thanks In Advance !!!

C#

bool Display; // declared at class level. 
//btnshow_hide is on form 1.
private void btnshow_hide_Click(object sender, EventArgs e)
        {
            form2 tc = new form2();
            if (Display == true)
            {
                Display = false;                
                tc.Show();
            }
            else if (Display == false)
            {
                Display = true;
                tc.Hide();
                //tc.Close();
            }
        }

Posted 29-Dec-12 0:38am

Ank_ush

Updated 29-Dec-12 1:37am

v2

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Jibesh 29-Dec-12 7:24am

Can you copy the code you did. Solution provided by OriginalGriff should resolve the issue

Ank_ush 29-Dec-12 7:38am

Copied the code, you can review....

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OriginalGriff · Accepted Answer · 2012-12-29T00:42:00

Solution 1

You have to use the Hide or Close method of the form on the actual instance of the form, not on a new one:

C#

private Form2 form2;
private void OpenForm2()
   {
   if (form2 == null)
      {
      form2 = new Form2();
      }
   form2.Show();
   }
private void CloseForm2()
   {
   if (form2 != null)
      {
      form2.Close();
      form2 = null;
      }
   }

"Its not working. I have button on form 1, I want to use the same button to show and hide the form 2."

Not exactly a big change:

C#

private Form2 form2;
private void ToggleForm2()
   {
   if (form2 == null)
      {
      form2 = new Form2();
      form2.Show();
      }
   else
      {
      form2.Close();
      form2 = null;
      }
   }

Posted 29-Dec-12 0:42am

OriginalGriff

Updated 29-Dec-12 1:31am

v2

Comments

Ank_ush 29-Dec-12 7:00am

Its not working. I have button on form 1, I want to use the same button to show and hide the form 2.

Ank_ush 29-Dec-12 7:39am

Review my code....

OriginalGriff 29-Dec-12 7:49am

Yes. Now look at mine. Do you see the difference? That is why my code works, and yours doesn't...

If you don't see the difference, it is that I keep a copy of the reference to teh form I open, so I can close it again. You don't.

Ank_ush 29-Dec-12 8:03am

Yes Friend, i changed the code and it worked... Thanks............

OriginalGriff 29-Dec-12 8:15am

You're welcome!