private void TxtBuscar_TextChanged(object sender, EventArgs e)
{
try
{
Grado grado = new Grado();
dgvGrados.DataSource = null;
dgvGrados.DataSource = grado.Buscar(txtBuscar.Text);
dgvGrados.ClearSelection();
txtBuscar.Focus();
}
catch (Exception Ex)
{
MessageBox.Show(Ex.Message);
}
}