public static frmGrupos GetChild(mdiPrincipal parent = null)
{
if (_childInstance == null)
{
_childInstance = new frmGrupos();
_childInstance.MdiParent = parent;
}
return(_childInstance);
}
private void btnGrupos_Click(object sender, EventArgs e)
{
frmGrupos frm = frmGrupos.GetChild((SGP.mdiPrincipal) this.MdiParent);
frm.Show();
}
private void gruposToolStripMenuItem_Click(object sender, EventArgs e)
{
frmGrupos frm = frmGrupos.GetChild(this);
frm.Show();
}