private void mnGroup_Click(object sender, EventArgs e)
{
var frmListGroup = new frmListGroup(_userInfo);
frmListGroup.MdiParent = this;
frmListGroup.Show();
}
private void btnClose_Click(object sender, EventArgs e)
{
if (_parent != null)
{
_parent.Show();
_parent.Focus();
}
this.Close();
}