private void btnEliminar_Click(object sender, EventArgs e) { if (mgAlumno.CurrentRow.Cells[0].Value == null) { MetroMessageBox.Show(this, "Sellecione un alumno", "Error", MessageBoxButtons.OK, MessageBoxIcon.Warning); } else { ParienteComponent parentescoComponent = new ParienteComponent(); parentescoComponent.Delete(int.Parse(mgAlumno.CurrentRow.Cells[8].Value.ToString())); llenarGrilla(); RecorridoForm.LimpiarTXT(this); } }