NameValueCollectionValueProvider

NameValueCollectionValueProvider provider = new NameValueCollectionValueProvider(nameValueCollection,
				CultureInfo.InstalledUICulture);
                        if(Type==typeof(string)){

var a = provider.GetValue("a").AttemptedValue;

} else {

var a = provider.GetValue("a").convert(Type)

}
			                    

　　可以把Requert传进去  假如字段类型为字符串 就能获取以逗号分隔的字符串，