private void userToolStripMenuItem_Click(object sender, EventArgs e)
{
if (userInfoForm != null)
{
userInfoForm.Show();
}
else
{
userInfoForm = new UserInfoForm();
userInfoForm.MdiParent = clsFormProvider.mainF;
userInfoForm.Show();
userInfoForm.FormClosing += userInfoForm_FormClosing;
}
}
public void userInfoForm_FormClosing(object sender, FormClosingEventArgs e)
{
userInfoForm = null;
}
