c# - 如何显示组合框值而不是显示对象名称

Question

我尝试解决这个问题大约需要 3 个小时。我的组合框向我显示对象名称而不是一个值，例如:A

这是我的课:

namespace Supermarket
{
    public class WhareHouseTable
    {
        public string name { get; set; }
        public double cost { get; set; }
        public string offer { get; set; }
    }
}

这是我的代码:

private void Form1_Load(object sender, EventArgs e)
{
    List<WhareHouseTable> product = new List<WhareHouseTable>();
    product.Add(new WhareHouseTable { name = "A", cost = 0.63, offer = "Buy 2 for the price of 1" });
    product.Add(new WhareHouseTable { name = "B", cost = 0.20 });
    product.Add(new WhareHouseTable { name = "C", cost = 0.74, offer = "Buy 2; get B half price" });
    product.Add(new WhareHouseTable { name = "D", cost = 0.11 });
    product.Add(new WhareHouseTable { name = "E", cost = 0.50, offer = "Buy 3 for the price of 2" });
    product.Add(new WhareHouseTable { name = "F", cost = 0.40 });

    comboBox2.DataSource = product;
    comboBox2.DropDownStyle = ComboBoxStyle.DropDownList;

    source.DataSource = product;

    foreach (var selected in product)
    {
        comboBox2.Text = selected.name;
        itemCostLabel.Text = selected.cost.ToString();
        offerLabel.Text = selected.offer;
    }
}

在 foreach 中，我试图获取所有产品并在组合框和标签中表示它们。

遇到这种情况我该怎么办？

Answer 1

您需要将绑定(bind)源中的一个属性指定为将要显示的 DisplayMember 以及与其 ValueMember 相同或另一个属性，您可以通过selectedItem.Value

访问

comboBox2.DisplayMember = "Name";
comboBox2.ValueMember = "Name";