C# - 在 ListBox 组件中使用 displaymember 设置两个属性

Question

我尝试在我的 ListBox 组件中将“FirstName”和“LastName”属性显示在同一行，例如“SMITH Robert”，但是当我启动程序时，我有 Id 属性。问题可能是程序没有找到属性“LastName”和“FirstName”...

我的客户类:

public class Customer
{
    private int id;
    private string lastName;
    private string firstName;

    public Customer(int id, string lastName, string firstName)
    {
        this.id = id;
        this.lastName = lastName.ToUpper();
        this.firstName = firstName;
    }

    #region Accessors

    public int GetId() { return id; }
    public string GetLastName() { return lastName; }
    public string GetFirstName() { return firstName; }

    public void SetId(int id) { this.id = id; }
    public void SetLastName(string lastName) { this.lastName = lastName; }
    public void SetFirstName(string firstName) { this.firstName = firstName; }

    #endregion

    #region Properties

    public int Id { get { return id; } set { id = value; } }
    public string LastName { get { return lastName; } set { lastName = value; } }
    public string FirstName { get { return firstName; } set { firstName = value; } }

    #endregion
}

我将用于此操作的函数(客户是从 Access 数据库加载的客户列表(这部分工作)):

// Define where is from data.
lbxCustomers.DataSource = customers;
// Value show in listbox.
lbxCustomers.DisplayMember = "LastNameFirstName";
// Value when row is selected in listbox.
lbxCustomers.ValueMember = "Id";

Answer 1

您需要 DisplayMember 信息成为引用类中的现有属性:

public string LastNameFirstName {
  get {
    return lastName + ", " + firstName;
  }
}