private void manageEmployeeToolStripMenuItem_Click(object sender, EventArgs e)
        {
            EmployeeForm objEmpForm = new EmployeeForm();

            objEmpForm.MdiParent = this;
            objEmpForm.Visible   = true;
        }
 private void manageEmployeeToolStripMenuItem1_Click(object sender, EventArgs e)
 {
     if (objEmpForm == null)
     {
         objEmpForm           = new EmployeeForm();
         objEmpForm.MdiParent = this;
         objEmpForm.Show();
     }
     else
     {
         objEmpForm.Activate();
         objEmpForm.MdiParent   = this;
         objEmpForm.FormClosed += ObjEmpForm_FormClosed;
     }
 }