private void ConsultarTareasToolStripMenuItem_ItemClicked(object sender, EventArgs e)
{
cTareas obj = new cTareas();
obj.MdiParent = this;
obj.Show();
}
private void cTareasMenuItem_Click(object sender, RoutedEventArgs e)
{
cTareas ventana = new cTareas();
ventana.Show();
}