If MDI Child is active restore its default state without opening new child form

Example: 

Example below shows how to restore MDI Child form to its default state without opening a new Child Form if that MDI Child form is already open.


Child Form Click Event:

     private void formTest_Click(object sender, EventArgs e)
     {
          if (CheckMdiClientDuplicates("Namespace01.FormTest", "FormTest") == true)
          {
              FormTest childForm = new FormTest();
              childForm.MdiParent = this;
              childForm.Show();
          }

     }

  CheckMdiClientDuplicates Function:

 internal bool CheckMdiClientDuplicates(string WndCls,string fName)
 {
      Form[] mdichld = this.MdiChildren;
      foreach (Form selfm in mdichld)
      {
          string str = selfm.Name;
          if (str == fName)
          {
              selfm.WindowState = FormWindowState.Normal;
              return false;
          }
      }
      return true;
 }

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Note: ** Namespace01 is the namespace of MDI Parent Form.


** For more information please Contact Us.


 

Posted in: Windows Form Application