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我正在使用EF 4.3代码优先使用WCF数据服务（刚刚发布的5.0）通过HTTP公开数据 我发现如果我从浏览器调用服务操作我能够获得相关实体，但是当我在客户端应用程序中使用服务操作时，我无法找回相关实体。 我一直在研究这isuse它似乎EF启用延迟加载whn使用虚拟关键词时引用一个ICollection，这一些如何防止WCF数据服务returing realted实体 - 这是真的 如果我在本地浏览，并把一个休息指向我的getUsersByName方法我可以看到相关的组实体，但是当它通过电缆连接到客户端应用程序时，缺少gropup实体。 有没有配置来启用它。WCF数据服务 - 服务操作不返回相关的原因
感谢 如
public partial class Group
{
public Group()
{
this.Users = new HashSet<User>();
}
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int GroupID { get; set; }
[Required(ErrorMessage = "Please enter a group name")]
[StringLength(50, ErrorMessage = "The group name is too long")]
public string GroupName { get; set; }
[Required]
public System.DateTime CreatedDate { get; set; }
[Required]
public bool Admin { get; set; }
public virtual ICollection<User> Users { get; set; }
}
public partial class User
{
public User()
{
this.Groups = new HashSet<Group>();
}
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int UserID { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
[Required(ErrorMessage="Please enter a username")]
[StringLength(50,ErrorMessage="Username is too long")]
public string UserName { get; set; }
[Required(ErrorMessage="Please enter an email address")]
[RegularExpression(".+\\@.+\\..+",ErrorMessage="Please enter a valid email address")]
public string Email { get; set; }
[Required]
public System.DateTime CreatedDate { get; set; }
public virtual ICollection<Group> Groups { get; set; }
}
public partial class TestContext : DbContext
{
public Test()
: base("name=TestEntities")
{
}
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
// Tell Code First to ignore PluralizingTableName convention
// If you keep this convention then the generated tables will have pluralized names.
modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
}
public DbSet<Group> Groups { get; set; }
public DbSet<User> Users { get; set; }
}
[ServiceBehavior(IncludeExceptionDetailInFaults=true)]
[JSONPSupportBehavior]
public class TestSVC : DataService<TestContext>
{
// This method is called only once to initialize service-wide policies.
public static void InitializeService(DataServiceConfiguration config)
{
config.SetEntitySetAccessRule("*", EntitySetRights.All);
config.SetServiceOperationAccessRule("*", ServiceOperationRights.All);
config.SetServiceActionAccessRule("*", ServiceActionRights.Invoke);
config.DataServiceBehavior.MaxProtocolVersion = DataServiceProtocolVersion.V3;
config.UseVerboseErrors = true;
}
[WebGet]
public User GetUserByName(string userName)
{
var user = (from u in this.CurrentDataSource.Users
where u.UserName == userName
select u).FirstOrDefault();
return user;
}