如何顯示組合框值而不是顯示對象名稱

Question

大約 3 個小時我試圖解決這個問題。 我的組合框向我顯示對象名稱而不是一個值，例如：A

這是我的課：

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

這是我的代碼：

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，我試圖獲取所有產品並在組合框和標簽中表示它們。

在這種情況下我能做什么？

Answer 1

您需要將綁定源中的一個屬性指定為其將要顯示的DisplayMember ，並指定與其ValueMember相同或另一個屬性，您可以通過selectedItem.Value訪問

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

Answer 2

您應該像這樣覆蓋類的 toString() 方法：

public override String toString(){
    return name;
}