asp.net-mvc – 用于枚举的IRouteConstraint

基本上,你需要

private Type enumType;

  public EnumConstraint(Type enumType)
  {
    this.enumType = enumType;
  }

  public bool Match(HttpContextBase httpContext,Route route,string parameterName,RouteValueDictionary values,RouteDirection routeDirection)
  {
    // You can also try Enum.IsDefined,but docs say nothing as to
    // is it case sensitive or not.
    return Enum.GetNames(enumType).Any(s => s.ToLowerInvariant() == values[parameterName].ToString());
  }