我搜寻了2个小时还是找不到答案,所以我在这里尝试求助:
我想知道怎样(如果可能)可以将一个模型列表数据绑定到WinForms下拉框,并使用列表中某个模型的属性中嵌套的属性作为显示成员(DisplayMember)? 代码如下:
public partial class Form1 : Form
{
private List<UserDataModel> userData = new List<UserDataModel>();
public Form1()
{
InitializeComponent();
MyInit();
}
public void MyInit()
{
var userDataModel1 = new UserDataModel();
userDataModel1.Name = "Mike";
userDataModel1.Phone = "555-666";
userDataModel1.Home = new HomeDataModel();
userDataModel1.Home.StreetName = "MikeStreet";
userDataModel1.Home.GeoLocationX = 111;
userDataModel1.Home.GeoLocationY = 222;
var userDataModel2 = new UserDataModel();
userDataModel2.Name = "Jonathan";
userDataModel2.Phone = "777-888";
userDataModel2.Home = new HomeDataModel();
userDataModel2.Home.StreetName = "JonathanStreet";
userDataModel2.Home.GeoLocationX = 333;
userDataModel2.Home.GeoLocationY = 444;
userData.Add(userDataModel1);
userData.Add(userDataModel2);
// This works as usually:
/*
comboBox1.DisplayMember = "Name";
comboBox1.ValueMember = "Home";
comboBox1.DataSource = userData;
*/
// But this works not (either with comboBox1.DataBindings.Add() nor with BindingSource):
comboBox1.DisplayMember = "Home.StreetName";
comboBox1.ValueMember = "Home";
comboBox1.DataSource = userData;
// To drive me crazy, THAT shit works:
textBox1.DataBindings.Add("Text", userData, "Home.StreetName");
/*
So how can i use a String-Property of a SubObject as ComboBox-DisplayMember ???
BTW: To rebuild the sample, you only need a normal Forms Application and
then drop a ComboBox and a TextBox on it. Copy that code here, and run it.
*/
}
}
internal sealed class UserDataModel
{
public string Name { get; set; }
public string Phone { get; set; }
public HomeDataModel Home { get; set; }
}
internal sealed class HomeDataModel
{
public string StreetName { get; set; }
public int GeoLocationX { get; set; }
public int GeoLocationY { get; set; }
}