private void btnListar_Click(object sender, EventArgs e)
{
servicio = new ServiceReference1.WSAsignaturaSoapClient();
dgbAsignatura.DataSource = servicio.Listar().Tables[0];
}
private void Listar()
{
servicio = new ServiceReference1.WSAsignaturaSoapClient();
dgbAsignatura.DataSource = servicio.Listar().Tables[0];
}