Я нашел решение:
В .Net 4 вы должны добавить следующую строку в :
<httpRuntime requestValidationType="MyService.CustomRequestValidator" />
Класс CustomRequestValidator - это проверка, которую вы должны добавить самостоятельно. Затем просто переопределите метод bool IsValidRequestString () и верните true для устранения проверки:
/// <summary>
/// Validates the input based on some custom rules
/// </summary>
public class CustomRequestValidator : RequestValidator
{
/// <summary>
/// Validates a string that contains HTTP request data.
/// </summary>
/// <param name="context">The context of the current request.</param>
/// <param name="value">The HTTP request data to validate.</param>
/// <param name="requestValidationSource">An enumeration that represents the source of request data that is being validated. The following are possible values for the enumeration:QueryStringForm CookiesFilesRawUrlPathPathInfoHeaders</param>
/// <param name="collectionKey">The key in the request collection of the item to validate. This parameter is optional. This parameter is used if the data to validate is obtained from a collection. If the data to validate is not from a collection, <paramref name="collectionKey"/> can be null.</param>
/// <param name="validationFailureIndex">When this method returns, indicates the zero-based starting point of the problematic or invalid text in the request collection. This parameter is passed uninitialized.</param>
/// <returns>
/// true if the string to be validated is valid; otherwise, false.
/// </returns>
protected override bool IsValidRequestString(HttpContext context, string value, RequestValidationSource requestValidationSource, string collectionKey, out int validationFailureIndex)
{
// Set a default value for the out parameter.
validationFailureIndex = -1;
return true;
// // All other HTTP input checks are left to the base ASP.NET implementation.
// return base.IsValidRequestString(
// context,
// value,
// requestValidationSource,
// collectionKey,
// out validationFailureIndex);
}
}
}