private void BackToolStripMenuItemClick(object sender, EventArgs e)
{
if (accountInformation == null || accountInformation.IsDisposed)
{
accountInformation = new AccountInformation();
accountInformation.Show();
}
else
{
if (accountInformation.WindowState == FormWindowState.Minimized)
{
accountInformation.WindowState = FormWindowState.Maximized;
}
accountInformation.Activate();
}
}