MVC3验证数据的注释？ [英] MVC3 validation with data-annotation?

问题描述

时有可能使用一个数据注解的属性为dropdownlists是有效的，仅当用户选择从一个具有值O（零）不同的选项。
值为O（零）的选项是请选择一个帐户，这是默认选择。
我用[必需]属性来验证这个DropDownList的，但它不会有任何影响，因为，我怎么说，默认值为o选项（零） - 请选择一个帐户 - 选择

Is it possible to use a data-annotation attribute for dropdownlists to be valid, only if the user selects an option different from one with the value o (zero). The option with value o (zero) is "Please Select an account", which is selected by default. I used [Required] attribute to validate this dropdownlist, but it doesn't have any effect, because, how I said, by default the option with value o (zero)- "Please Select an account"- is selected.

推荐答案

是这样的：

[Range(1, int.MaxValue, ErrorMessage = "Please enter a value bigger than {1}")]
public int Value { get; set; }

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