驱动程序1.9序列化的Mongodb C#参数数量有限吗？

我在序列化过程中遇到问题。我已经花了很多时间，找不到解决办法。我有一个类，我想序列化为一个文档集合。如果我的类中有四个属性，那么一切都很好，但一旦我添加了另一个属性，我就会出现以下例外：

为Func类型声明指定的类型参数数量不正确。

这是我的密码：

   class Class1
   {
      [BsonId]
      public ObjectId _id { get; set; }

      public string Modelname { get; set; }
      public string Sn { get; set; }
      public string Filename { get; set; }

      public byte[] DataBin { get; set; }
      [BsonIgnore]
      public MyCustomClass data { get; set; }

      [BsonConstructor]
      public Class1()
      { }

      public Class1(string Modelname, string Sn, string Filename, MyCustomClass data)
      {
         this.Modelname = Modelname;
         this.Sn = Sn;
         this.Filename = Filename;
         this.data = data;

         BinaryFormatter formatter = new BinaryFormatter();
         using(MemoryStream stream = new MemoryStream())
         {
            formatter.Serialize(stream, this.data);
            this.DataBin = stream.ToArray();
         }
      }

      [BsonConstructor]
      public Class1(string Modelname, string Sn, string Filename, byte[] dataBin)
      {
         this.Modelname = Modelname;
         this.Sn = Sn;
         this.Filename = Filename;
         this.DataBin = dataBin;

         BinaryFormatter formatter = new BinaryFormatter();
         using(MemoryStream stream = new MemoryStream(this.DataBin))
         {
            this.data = (MyCustomClass)formatter.Deserialize(stream);
         }
      }
   }

类Class1在我的集合中序列化得很好

     MongoClient client = new MongoClient();
     MongoServer server = client.GetServer();
     MongoDatabase database = server.GetDatabase("mydb");
     MongoCollection<Class1> collection = database.GetCollection<Class1>("testCollection");
     MyCustomClass data = new MyCustomClass();
     Class1 doc = new Class1("test", "sn", "filename", data);
     collection.Save<Class1>(doc);

---

好的，我找到问题了。我在同一台电脑上尝试了另一种解决方案，一切都很好。所以我把代码复制到我的实际解决方案中，但它不起作用：相同的代码，相同的计算机，但结果不同！最后，我意识到我的实际解决方案使用了.NET3.5。我把它改成了.NET4.0，它可以工作了

---

结论：官方的C#驱动程序据说是在.NET 3.5下构建的，但在.NET 4.0下工作得更好，因为.NET 3.5只定义了最多4个参数的Func委托。

   class Class1
   {
      [BsonId]
      public ObjectId _id { get; set; }

      public string Modelname { get; set; }
      public string Sn { get; set; }
      public string Filename { get; set; }

      public double Num { get; set; }

      public byte[] DataBin { get; set; }
      [BsonIgnore]
      public MyCustomClass data { get; set; }

      [BsonConstructor]
      public Class1()
      { }

      public Class1(string Modelname, string Sn, string Filename, double Num, MyCustomClass data)
      {
         this.Modelname = Modelname;
         this.Sn = Sn;
         this.Filename = Filename;
         this.Num = Num;
         this.data = data;

         BinaryFormatter formatter = new BinaryFormatter();
         using(MemoryStream stream = new MemoryStream())
         {
            formatter.Serialize(stream, this.data);
            this.DataBin = stream.ToArray();
         }
      }

      [BsonConstructor]
      public Class1(string Modelname, string Sn, string Filename, double Num, byte[] dataBin)
      {
         this.Modelname = Modelname;
         this.Sn = Sn;
         this.Filename = Filename;
         this.Num = Num;
         this.DataBin = dataBin;

         BinaryFormatter formatter = new BinaryFormatter();
         using(MemoryStream stream = new MemoryStream(this.DataBin))
         {
            this.data = (MyCustomClass)formatter.Deserialize(stream);
         }
      }
   }