private void exercício2ToolStripMenuItem_Click(object sender, EventArgs e)
{
frmExercicio2 frm2 = new frmExercicio2();
frm2.MdiParent = this;
frm2.WindowState = FormWindowState.Maximized;
frm2.Show();
}
private void exercício2ToolStripMenuItem_Click(object sender, EventArgs e)
{
Form fc = Application.OpenForms["frmExercicio2"];
if (fc != null)
{
fc.Close();
}
frmExercicio2 FrmExercicio2 = new frmExercicio2();
FrmExercicio2.MdiParent = this;
FrmExercicio2.WindowState = FormWindowState.Maximized;
FrmExercicio2.Show();
}