C# 实体框架代码第一个连接表在插入时复制数据（Fluent API）

我目前正在创建一个连接到Azure移动服务的Windows 8.1应用程序，并首先使用EF6代码创建数据库

目前的表格有

账户

、

用户

、

业务

、

档案图片

和

Blob

。创建概要文件时，将在

帐户

表中插入一个条目，然后根据用户的选择，在

用户

或

业务

表中插入一个条目

当实例化

帐户

时，将在

帐户

模型中创建新的

用户

或

业务

和

档案图片

模型

我打算实现

ProfilePicture

的方法是在创建

帐户时设置默认的配置文件图片，因此我从表中选择默认的配置文件图片blob，并在
帐户中创建
ProfilePicture
模型时使用它。我遇到的问题是，当传递从查询返回的
Blob
时，它似乎也会将Blob插入
Blob
表中，从而复制条目，我不知道为什么。（希望下面的App.xaml.cs代码会更清楚一些）

我完全不知道为什么会发生这种情况。仍在掌握FluentAPI，因此我的知识不是最好的，因此任何提示/指导以及帮助都将不胜感激！谢谢


（对不起，代码太多了）

服务方
数据对象

public class Account : EntityData
{
    public string Username { get; set; }
    public string Password { get; set; }

    public User User { get; set; }
    public Business Business { get; set; }
    public ProfilePicture ProfilePicture { get; set; }
}

public class Business : EntityData
{
    public string Name { get; set; }
    public string ContactNo { get; set; }

    public Account Account { get; set; }
}

public class User : EntityData
{
    public string FirstName { get; set; }
    public string LastName { get; set; }

    public Account Account { get; set; }
}

public class ProfilePicture : EntityData
{
    public Account Account { get; set; }
    public Blob Blob { get; set; }
}

public class Blob : EntityData
{
    public string ContainerName { get; set; }
    public string ResourceName { get; set; }
    public string SASQueryString { get; set; }
    public string ImageURI { get; set; }
}

public class Account
{
    public string Id { get; set; }
    public string Username { get; set; }
    public string Password { get; set; }

    public User User { get; set; }
    public Business Business { get; set; }
    public ProfilePicture ProfilePicture { get; set; }
}

public class Business
{
    public string Id { get; set; }
    public string Name { get; set; }
    public string ContactNo { get; set; }
}

public class User
{
    public string Id { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
}

public class ProfilePicture
{
    public string Id { get; set; }

    public Account Account { get; set; }
    public Blob Blob { get; set; }
}

public class Blob
{
    public string Id { get; set; }
    public string ContainerName { get; set; }
    public string ResourceName { get; set; }
    public string SASQueryString { get; set; }
    public string ImageURI { get; set; }
}

Blob blob1 = new Blob
        {
            ContainerName = "Container1",
            ImageURI = "Uri1",
            ResourceName = "DefaultProfilePic",
            SASQueryString = "SomethingGoesHere"
        };
        await BlobTable.InsertAsync(blob1);

        List<Blob> pictures = await BlobTable.Where(blob => blob.ContainerName == "Container1").ToListAsync();

        Account account = new Account
        {
            Username = "User123",
            User = new User
            {
                FirstName = "John",
                LastName = "Smithy"
            },
            ProfilePicture = new ProfilePicture
            {
                Blob = pictures.First()
            },
            Password = "Password123"
        };

        string result = await MobileService.InvokeApiAsync<Account, string>("customAccount", account);

实体配置（仅限其构造函数）：

客户端
型号

public class Account : EntityData
{
    public string Username { get; set; }
    public string Password { get; set; }

    public User User { get; set; }
    public Business Business { get; set; }
    public ProfilePicture ProfilePicture { get; set; }
}

public class Business : EntityData
{
    public string Name { get; set; }
    public string ContactNo { get; set; }

    public Account Account { get; set; }
}

public class User : EntityData
{
    public string FirstName { get; set; }
    public string LastName { get; set; }

    public Account Account { get; set; }
}

public class ProfilePicture : EntityData
{
    public Account Account { get; set; }
    public Blob Blob { get; set; }
}

public class Blob : EntityData
{
    public string ContainerName { get; set; }
    public string ResourceName { get; set; }
    public string SASQueryString { get; set; }
    public string ImageURI { get; set; }
}

public class Account
{
    public string Id { get; set; }
    public string Username { get; set; }
    public string Password { get; set; }

    public User User { get; set; }
    public Business Business { get; set; }
    public ProfilePicture ProfilePicture { get; set; }
}

public class Business
{
    public string Id { get; set; }
    public string Name { get; set; }
    public string ContactNo { get; set; }
}

public class User
{
    public string Id { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
}

public class ProfilePicture
{
    public string Id { get; set; }

    public Account Account { get; set; }
    public Blob Blob { get; set; }
}

public class Blob
{
    public string Id { get; set; }
    public string ContainerName { get; set; }
    public string ResourceName { get; set; }
    public string SASQueryString { get; set; }
    public string ImageURI { get; set; }
}

Blob blob1 = new Blob
        {
            ContainerName = "Container1",
            ImageURI = "Uri1",
            ResourceName = "DefaultProfilePic",
            SASQueryString = "SomethingGoesHere"
        };
        await BlobTable.InsertAsync(blob1);

        List<Blob> pictures = await BlobTable.Where(blob => blob.ContainerName == "Container1").ToListAsync();

        Account account = new Account
        {
            Username = "User123",
            User = new User
            {
                FirstName = "John",
                LastName = "Smithy"
            },
            ProfilePicture = new ProfilePicture
            {
                Blob = pictures.First()
            },
            Password = "Password123"
        };

        string result = await MobileService.InvokeApiAsync<Account, string>("customAccount", account);

App.xaml.cs

public class Account : EntityData
{
    public string Username { get; set; }
    public string Password { get; set; }

    public User User { get; set; }
    public Business Business { get; set; }
    public ProfilePicture ProfilePicture { get; set; }
}

public class Business : EntityData
{
    public string Name { get; set; }
    public string ContactNo { get; set; }

    public Account Account { get; set; }
}

public class User : EntityData
{
    public string FirstName { get; set; }
    public string LastName { get; set; }

    public Account Account { get; set; }
}

public class ProfilePicture : EntityData
{
    public Account Account { get; set; }
    public Blob Blob { get; set; }
}

public class Blob : EntityData
{
    public string ContainerName { get; set; }
    public string ResourceName { get; set; }
    public string SASQueryString { get; set; }
    public string ImageURI { get; set; }
}

public class Account
{
    public string Id { get; set; }
    public string Username { get; set; }
    public string Password { get; set; }

    public User User { get; set; }
    public Business Business { get; set; }
    public ProfilePicture ProfilePicture { get; set; }
}

public class Business
{
    public string Id { get; set; }
    public string Name { get; set; }
    public string ContactNo { get; set; }
}

public class User
{
    public string Id { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
}

public class ProfilePicture
{
    public string Id { get; set; }

    public Account Account { get; set; }
    public Blob Blob { get; set; }
}

public class Blob
{
    public string Id { get; set; }
    public string ContainerName { get; set; }
    public string ResourceName { get; set; }
    public string SASQueryString { get; set; }
    public string ImageURI { get; set; }
}

Blob blob1 = new Blob
        {
            ContainerName = "Container1",
            ImageURI = "Uri1",
            ResourceName = "DefaultProfilePic",
            SASQueryString = "SomethingGoesHere"
        };
        await BlobTable.InsertAsync(blob1);

        List<Blob> pictures = await BlobTable.Where(blob => blob.ContainerName == "Container1").ToListAsync();

        Account account = new Account
        {
            Username = "User123",
            User = new User
            {
                FirstName = "John",
                LastName = "Smithy"
            },
            ProfilePicture = new ProfilePicture
            {
                Blob = pictures.First()
            },
            Password = "Password123"
        };

        string result = await MobileService.InvokeApiAsync<Account, string>("customAccount", account);

Blob blob1=新Blob
{
ContainerName=“Container1”，
ImageURI=“Uri1”，
ResourceName=“DefaultProfilePic”，
SASQueryString=“SomethingGoesher”
};
等待BlobTable.InsertAsync（blob1）；
列表图片=等待BlobTable.Where（blob=>blob.ContainerName==“Container1”）.toListSync（）；
帐户=新帐户
{
Username=“User123”，
用户=新用户
{
FirstName=“约翰”，
LastName=“史密斯”
},
ProfilePicture=新的ProfilePicture
{
Blob=pictures.First（）
},
Password=“Password123”
};
字符串结果=等待MobileService.InvokeApiAsync（“customAccount”，account）；