Question

我正在尝试将实现DbContext的对象写入文件，但是我无法使DataContractSerializer工作。我正在看这篇关于主题的帖子http://www.riggshill.com/home/node/24，但我收到了一个错误：

Error 10 'System.Runtime.Serialization.DataContractSerializer' does not contain a definition for 'Serialize' and no extension method 'Serialize' accepting a first argument of type 'System.Runtime.Serialization.DataContractSerializer' could be found (are you missing a using directive or an assembly reference?)

我的课程如下：

public class ManagementDbContext : DbContext
{
    public DbSet<RemoteHost> RemoteHosts {get;set;}
    public DbSet<DataSource> DataSources { get; set; }

    public override int SaveChanges()
    {

        using (FileStream fs = File.OpenWrite("ManagementData.xml"))
        {
            XmlDictionaryWriter writer = XmlDictionaryWriter.CreateTextWriter(fs, Encoding.UTF8);
            DataContractSerializer srlz = new DataContractSerializer(typeof(ManagementDbContext));
            srlz.Serialize(writer, this);
            writer.Close(); // ensure it's properly flushed
        }
        return base.SaveChanges();
    }
}

编辑：

好的，事实证明我所遵循的示例代码很糟糕，我犯了错误。第srlz.Serialize(writer,this)行应该是srlz.WriteObject(writer,this) 如下所示DataContractSerializer 此外，我无法序列化DbContext的实现，并且缺少类的[Serializable]和[DataContract]属性，以及Daniil指出的成员的[DataMember（）]。

Answer 1

首先 - 您需要在ManagementDbContext中使用Serializable和DataContract属性。第二，您无法序列化您的对象，因为DbContext未标记任何属性。

Serialization

的基本要约

DataContractSerializer不适用于MVC DBContext对象

1 个答案: