以编程方式生成并分配ComboBox DataSource

Question

我有一个名为cmbWeekDays的ComboBox，一个WeekDay类：

public class WeekDay
{ 
    public int Index;
    public string DayName;
}

和这个FormLoad事件：

List<WeekDay> days = new List<WeekDay>();
days.Add(new WeekDay { DayName = "Sat", Index = 1 });
days.Add(new WeekDay { DayName = "Sun", Index = 2 });
days.Add(new WeekDay { DayName = "Mon", Index = 3 });
days.Add(new WeekDay { DayName = "Tue", Index = 4 });
days.Add(new WeekDay { DayName = "Wed", Index = 5 });
days.Add(new WeekDay { DayName = "Thu", Index = 6 });
days.Add(new WeekDay { DayName = "Fri", Index = 7 });

cmbxWeekDays.DataSource = days;
cmbxWeekDays.DisplayMember = "DayName";
cmbxWeekDays.ValueMember = "Index";
cmbxWeekDays.Refresh();

我不知道为什么会得到这个奇怪的结果：

任何人都能解释我发生了什么吗？以及如何克服这个问题？

Answer 1

数据绑定仅适用于属性。因此，您必须在数据源类中声明属性而不是字段：

public class WeekDay
{
    public int Index { get; set; }
    public string DayName { get; set; }
}

Answer 2

尝试以下方式可能对您有所帮助。我也面临同样的问题。但我写了cmbyear.Databind（）最后它适合我。所以尝试一次。

 DropDownList cmbYear = new DropDownList();
        cmbYear.DataSource = days;  
        cmbYear.DataTextField = "Year";
        cmbYear.DataValueField = "YearID";
        cmbYear.DataBind();