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