private void FiltrarStockTextBox_TextChanged(object sender, EventArgs e)
 {
     if (FiltrarStockTextBox.Text.Trim() != string.Empty)
     {
         stock = new DStock();
         DgvStock.DataSource = stock.SelectStockByNombre(FiltrarStockTextBox.Text.Trim());
         DgvStock.Refresh();
     }
     else
     {
         SelectStock();
     }
 }
 private void SelectStock()
 {
     stock = new DStock();
     DgvStock.DataSource = stock.SelectStock();
     DgvStock.Refresh();
 }
 private void ActualizarListadoStock_Click_1(object sender, EventArgs e)
 {
     stock = new DStock();
     DgvStock.DataSource = stock.SelectStock();
     DgvStock.Refresh();
 }