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我在Silverlight的Web服務/數據庫抽象層方面沒有太多經驗，並且陷入了我的移植工作的一個方面。項目中有一位核心C＃開發人員不再參與其中，我正在編寫他編寫的代碼。關於從RIA Services July Preview到RIA Services 1.0更新代碼的快速問題
我正在使用RIA Services 1.0將帶有RIA Services預覽版本的SL3項目上的代碼更新到SL4。我引用RIA_Services_Breaking_Changes.doc文件從該網址我的代碼的轉換工作： http://code.msdn.microsoft.com/RiaServices/Release/ProjectReleases.aspx?ReleaseId=3570
我掛機是什麼，我認爲是一個潛在的自動生成的文件，涉及到RIA服務EntityCollection/EntityState東西錯誤。
HerculesModel.metadata.cs（開始轉換前）
namespace Everest.Domain.Hercules
{
using System;
using System.ComponentModel.DataAnnotations;
using System.Web.Ria;
using System.Web.Ria.Data;
using System.Web.DomainServices;
using System.Data;
using System.Data.Objects.DataClasses;
// The MetadataTypeAttribute identifies AuthenticationTypesMetadata as the class
// that carries additional metadata for the AuthenticationTypes class.
[MetadataTypeAttribute(typeof(AuthenticationTypes.AuthenticationTypesMetadata))]
public partial class AuthenticationTypes
{
// This class allows you to attach custom attributes to properties
// of the AuthenticationTypes class.
//
// For example, the following marks the Xyz property as a
// required field and specifies the format for valid values:
// [Required]
// [RegularExpression("[A-Z][A-Za-z0-9]*")]
// [StringLength(32)]
// public string Xyz;
internal sealed class AuthenticationTypesMetadata
{
// Metadata classes are not meant to be instantiated.
private AuthenticationTypesMetadata()
{
}
public EntityState EntityState;
public EntityCollection<LoginAccounts> LoginAccounts;
public int TypeId;
public string TypeName;
}
}
...
}
我更新了使用引用在斷裂中列出的新的命名空間上面的修改文檔，並測試了構建。 Visual Studio中則列出了以下錯誤274倍的文件中：
Error 53 'EntityCollection' is an ambiguous reference between 'System.ServiceModel.DomainServices.Client.EntityCollection<Everest.Domain.Hercules.BookmarkedProfiles>' and 'System.Data.Objects.DataClasses.EntityCollection<Everest.Domain.Hercules.BookmarkedProfiles>' C:\...\Everest.Domain.Hercules\HerculesModel.metadata.cs 872 11 Everest.Domain.Hercules
Error 189 'EntityState' is an ambiguous reference between 'System.ServiceModel.DomainServices.Client.EntityState' and 'System.Data.EntityState' C:\...\Everest.Domain.Hercules\HerculesModel.metadata.cs 3501 11 Everest.Domain.Hercules
所以我更新的代碼，添加預選賽消除歧義：
namespace Everest.Domain.Hercules
{
using System;
using System.ComponentModel.DataAnnotations;
using System.ServiceModel.DomainServices.Server;
using System.ServiceModel.DomainServices.Hosting;
using System.ServiceModel.DomainServices.Client;
using System.ServiceModel.DomainServices;
using System.Data;
using System.Data.Objects.DataClasses;
[MetadataTypeAttribute(typeof(AuthenticationTypes.AuthenticationTypesMetadata))]
public partial class AuthenticationTypes
{
internal sealed class AuthenticationTypesMetadata
{
private AuthenticationTypesMetadata()
{
}
public System.ServiceModel.DomainServices.Client.EntityState EntityState;
public System.ServiceModel.DomainServices.Client.EntityCollection<LoginAccounts> LoginAccounts;
public int TypeId;
public string TypeName;
}
}
...
}
試圖建立我收到的代碼後下面的一般錯誤160次，我完全卡在這些TEntity錯誤：
Error 28 The type 'Everest.Domain.Hercules.Authentication.LoginAccounts' cannot be used as type parameter 'TEntity' in the generic type or method 'System.ServiceModel.DomainServices.Client.EntityCollection<TEntity>'. There is no implicit reference conversion from 'Everest.Domain.Hercules.Authentication.LoginAccounts' to 'System.ServiceModel.DomainServices.Client.Entity'. C:\...\Everest.Domain.Hercules\Authentication\AuthenticationModel.metadata.cs 358 85 Everest.Domain.Hercules
我有ReSharper的安裝了Visual Studio 2010中，它指出，僅使用由文檔使用的指令是System和System.ComponentModel.DataAnnotations。據我所知* .metadata.cs文件是自動生成的，但我如何重新生成元數據文件，支持這個新版本的RIA服務？這個項目使用了一個開源的MVVM框架。
非常感謝您爲我提供的任何幫助！