无法绑定到 ComboBox 中的新显示成员 [英] Cannot bind to the new display member in ComboBox

问题描述

我有一个类给我这个错误

I have a class which give me this error

public class Item 
{
    public string Name;
    public int Id

    public Item(string name, int id) 
    {
        Name = name; 
        Id = id;
    }
}   

这是我的功能

 var lstItems = new List<Item>();
 while(...)
 {
     lstItems.Add(new Item(sAd_Ref, Convert.ToInt32(sAd_ID))); 
 }

 comboBox1.DataSource = lstItems;
 comboBox1.ValueMember = "Id";
 comboBox1.DisplayMember = "Name";

在倒数第二行，我得到了

On second to the last line I am getting exception of

无法绑定到新的显示成员.

Cannot bind to the new display member.

推荐答案

你应该制作 Name 和 Id 属性.您不能将 ComboBox 绑定到字段.

You should make Name and Id properties. You can't bind ComboBox to fields.

public string Name { get; set; }
public int Id { get; set; }

文档中也有说明:

ValueMember 属性:获取或设置属性以用作 System.Windows.Forms.ListControl 中项目的实际值.

ValueMember Property: Gets or sets the property to use as the actual value for the items in the System.Windows.Forms.ListControl.

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