模型中整数数组的MVC验证器 [英] MVC validator for integer array in model

问题描述

我在模型中使用了验证器必填字段，如下所示及其有效

I have used validator required field in my model as follow and its working

  [Required(ErrorMessage = "Description is required.")]
        public string Description { get; set; }

现在，我还有另一个整数数组类型的属性

Now i have another property of integer array type

 public string[] Roles { get; set; }

我不知道如何将所需的字段验证器放在整数数组上?

推荐答案

编写自定义验证属性.

我还没有测试过，但是尝试这样的代码:

I've not tested but try code like this :

public class RequiredArray : ValidationAttribute
{
    public override bool IsValid(object value)
    {
        var list = value as IList;
        if (list != null)
        {
            return list.Count > 0;
        }
        return false;
    }
}

[RequiredArray (ErrorMessage = "Roles is required.")]
public string[] Roles{ get; set; }

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