[转][C#][WPF]MVVM 下的 ComboBox 数据绑定效果

<ComboBox Name="cmbBox" ItemsSource="{Binding list}" 
            DisplayMemberPath="Code" SelectedValue="{Binding SelectedCode}"  />

private CodeVo selectCode;
public CodeVo SelectCode
{
    get { return selectCode; }
    set { SetProperty(ref selectCode, value); }
}

public List<CodeVo> list { get; set; }

public MainViewModel()
{
    list = new List<CodeVo> {
        new CodeVo{ ID= "A1",Code = "广州" },
        new CodeVo{ ID= "B1",Code = "重庆" },
        new CodeVo{ ID= "C1",Code = "山东" },
        new CodeVo{ ID= "D1",Code = "合肥" },
        new CodeVo{ ID= "E1",Code = "石家庄" }
    };
    selectCode = list[1];
}