private void manageUsersToolStripMenuItem_Click(object sender, EventArgs e)
{
var form = new ManageUsersForm();
form.MdiParent = this;
form.Show();
}
private void manageUsersToolStripMenuItem_Click(object sender, EventArgs e)
{
var openForms = Application.OpenForms.Cast <Form>();
bool isOpen = openForms.Any(x => x.Name == "ManageUsersForm");
if (!isOpen)
{
ManageUsersForm muf = new ManageUsersForm();
muf.MdiParent = this;
muf.WindowState = FormWindowState.Maximized;
muf.Show();
}
}