验证DropdownlistFor帮助

Question

我不能让这段代码工作。当我提交表单时，它没有显示验证错误消息。

viewModel

    [Required] 
    public SelectList CountryList { get; set; }
    public string Country { get; set; }

Create.aspx

    <%= Html.DropDownListFor(m => m.Country,Model.CountryList, "--Select--")%>
        <%: Html.ValidationMessageFor(model => model.Country,"*") %>

Answer 1

尝尝这个

public SelectList CountryList { get; set; }
[Required]  
public string Country { get; set; }