从组合框中获取字符串值以用于数据库比较的最佳方法

Question

I have a combobox that is populated on the form load event. Of course the values are string format. They info is displayed 1-info in the combobox. I want to take that first digit and compare it to a value in my database. Based off which value it finds then populates the fields on the form. Here is what I have so far. I have been able to figure out as far as converting it back to int 32.

if (cmboBoxPreviousVersion.SelectedItem != null)
        {
            string[] s = cmboBoxPreviousVersion.Items[cmboBoxPreviousVersion.SelectedIndex].ToString().Split(' ');
            int id = Convert.ToInt32(s[0]);


            Item.FormatID = data.FormatID;
            Item.FormatName = data.FormatName;
            Item.FormatDescription = data.FormatDescription;
            Item.StockID = data.StockID;
            Item.PrintPlantCode = (bool)data.PrintPlantCode;
            Item.PrintWeight = (bool)data.PrintWeight;
            Item.PrintPrice = (bool)data.PrintPrice;

            rChkBoxPlantCode.Checked = Item.PrintPlantCode;
            rChkBoxPrintPrice.Checked = Item.PrintPrice;
            rChkBoxWeight.Checked = Item.PrintWeight;
            cmboBoxStock.Items.Add(Item.StockID);
            rTxtBoxDescription.Text = Item.FormatDescription;
        }
        rChkBoxPlantCode.Enabled = false;
        rChkBoxPrintPrice.Enabled = false;
        rChkBoxWeight.Enabled = false;

Any suggestions? Thank you before hand. If you need any other info or clarification let me know!

Added combox fill method

try
        {
            List<PreviousVersionData> listID = PreviousVersionData.getDatabase();
            if (listID != null)
            {
                foreach (PreviousVersionData l in listID)
                {
                    cmboBoxPreviousVersion.Items.Add(string.Format("{0} - {1}", l.FormatID, l.FormatName));

                }
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }

Answer 1

I would use:

int id;
bool result = Int32.TryParse(s[0], out id);

Now result has true/false if it was able to parse the value, without throwing exceptions.

Answer 2

如果您不将ComboBox项目的ID字段用于其他目的，则最好在其中存储数字。