c# - 无法将字符串数组传递给 WebApi Actionfilter

Question

基于此链接 https://msdn.microsoft.com/en-us/library/aa664615(v=vs.71).aspx我可以传递原始类型的一维数组。但是，每当我传递一个字符串数组时，我都没有得到针对此自定义操作筛选器属性设置的所需值。我做错了什么吗？

[AttributeUsage(AttributeTargets.Method, Inherited = true)]
public class CheckModelForNullAttribute : ActionFilterAttribute
{
    private readonly Func<Dictionary<string, object>, string[],  bool> _validate;
    public string ErrorMessage { get; set; }
    public string ErrorCode { get; set; }
    public string[] ExcludeArgs { get; set; }

    public CheckModelForNullAttribute( )
        : this((objects, excludedArgs) => objects.ContainsValue(null) && excludedArgs.Any(objects.ContainsKey) == false)
    {

    }


    public CheckModelForNullAttribute(Func<Dictionary<string, object>, string[], bool> checkCondition)
    {
        _validate = checkCondition;
    }

    public override void OnActionExecuting(HttpActionContext actionContext)
    {
        if (_validate(actionContext.ActionArguments, ExcludeArgs))
        {
            actionContext.ModelState.AddModelError("EmptyModel", ErrorMessage);
            actionContext.Response = actionContext.Request.CreateResponse(HttpStatusCode.OK, actionContext.ModelState.ValidationErrors(ErrorCode));
        }
    }
}

它被用作:

[CheckModelForNullAttribute(ExcludeArgs = new[] { "requests"}, ErrorMessage = Constants.GenericErrors.DefaultError )]
public HttpResponseMessage Create([FromBody] CreateAccountsRequest requests)
{ }

在调试时，当光标经过 _validate(...) 条件时，字符串数组的值为空，因为我在 ErrorMessage 变量中有一个必需的值。

Answer 1

我的测试-

[CheckModelForNullAttribute(ExcludeArgs = new string[] { "Test" }, ErrorMessage = "error", ErrorCode = "404")]