c# - 在模型的嵌套属性上使用 DisplayFor

Question

View 模型:

public class LiquiditySummariesViewModel
{
    [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:yyyy-MM-dd}")]
    public DateTime ValueDate { get; set; }

    public List<LiquidityA1B5SummariesModel> ControlGroupsSummaries { get; set; }
}

public class LiquidityA1B5SummariesModel
{
    [DisplayFormat(DataFormatString = "{0:n2}")]
    public decimal Balance { get; set; }
    ...
}

我正在尝试访问 View 上的Balance:

 @foreach (var item in Model.ControlGroupsSummaries)
 {
        <tr>
            <td>
                 @Html.DisplayFor(p=>p.ControlGroupsSummaries.Select(z=>z.Balance))
            </td>
        </tr>    
 }

但它不起作用:

@Html.DisplayFor(p=>p.ControlGroupsSummaries.Select(z=>z.Balance))

抛出

Templates can be used only with field access, property access, single-dimension array index, or single-parameter custom indexer expressions.

我不知道怎么解决。我想坚持数据注释，所以任何 string.Format 解决方案都不是一个选项。

Answer 1

您必须迭代列表并为每个项目调用显示:

@foreach (var summary in Model.ControlGroupsSummaries)
{
    @Html.DisplayFor(x => summary.Balance)
}