Silverlight error The type or namespace name 'MatchTimeoutInMilliseconds' could not be found

Question

After Windows 10 update 1511 I try build my existing silverlight project and get this error

The type or namespace name 'MatchTimeoutInMilliseconds' could not be found (are you missing a using directive or an assembly reference?) for Web project generated file ProjectName.Web.g.cs

[DataMember()]
        [Display(Name="UserNameLabel", Order=0, ResourceType=typeof(RegistrationDataResources))]
        [RegularExpression("^[a-zA-Z0-9_]*$", ErrorMessageResourceName="ValidationErrorInvalidUserName", ErrorMessageResourceType=typeof(ValidationErrorResources), MatchTimeoutInMilliseconds=-1)]
        [Required(ErrorMessageResourceName="ValidationErrorRequiredField", ErrorMessageResourceType=typeof(ValidationErrorResources))]
        [StringLength(255, ErrorMessageResourceName="ValidationErrorBadUserNameLength", ErrorMessageResourceType=typeof(ValidationErrorResources), MinimumLength=4)]
        public string UserName
        {
            get
            {
                return this._userName;
            }
            set
            {
                if ((this._userName != value))
                {
                    this.OnUserNameChanging(value);
                    this.RaiseDataMemberChanging("UserName");
                    this.ValidateProperty("UserName", value);
                    this._userName = value;
                    this.RaiseDataMemberChanged("UserName");
                    this.OnUserNameChanged();
                }
            }
        }

I haven't this error before I install update 1511. I use Visual studio 2015 pro with update 1 anybody know how to fix this?

Answer 1

Ok I found a "BAD" workaround.

In the "Services/UserRegistrationService.cs" in the project.web code, comment out the "[RegularExpression(...)]" for CreateUser, RegistrationData.UserName, RegistrationData.Email.

From what I can tell they changed the why the code is generated. If you have older copies of generated code you will find this property does not exist.

you can look here for the on-going issue. https://connect.microsoft.com/VisualStudio/feedback/details/2031887/generated-code-for-silverlight-references-matchtimeoutinmilliseconds-which-does-not-exist

Answer 2

Open RIA Services released a fix today for this http://openriaservices.codeplex.com/workitem/84