我也需要在MVC 4上实现“部分验证技术”，如this answer中所述:
public class DontValidateEmailAttribute : ActionFilterAttribute
{ public override void OnActionExecuting(ActionExecutingContext filterContext)
{
var modelState = filterContext.Controller.ViewData.ModelState;
var incomingValues = filterContext.Controller.ValueProvider;
var key = modelState.Keys.Single(x => incomingValues.Equals("Email"));
modelState[key].Errors.Clear();
}
}
但是我得到以下 编译错误:“
'System.Collections.Generic.ICollection<string>' does not contain a definition for 'Single' and no extension method 'Single' accepting a first argument of type 'System.Collections.Generic.ICollection<string>' could be found (are you missing a using directive or an assembly reference?) ...”
谢谢
请您参考如下方法:
您在顶部缺少using System.Linq吗？
