使用Protocol Buffers的序列化哈希表（.NET） [英] Serialize hashtable using Protocol Buffers (.NET)

问题描述

我想序列化/反序列化，其中包含使用protobuf网v2的散列表属性我的自定义类。

I am trying to serialize/deserialize my custom class which contains hashtable property using protobuf-net v2.

    [ProtoContract]
    public class MyClass
    {
        [ProtoMember(1)]
        public Hashtable MyHashTable { get; set; }
   }

当我打电话出现Serializer.Serialize（...）异常： 没有的类型定义的串行：的System.Collections.Hashtable 的

When I call Serializer.Serialize(...) exception appears: No serializer defined for type: System.Collections.Hashtable

我试着修改：

    [ProtoContract]
    public class MyClass
    {
        [ProtoMember(1, DynamicType = true)]
        public Hashtable MyHashTable { get; set; }
   }

不过，我还有一个例外： 类型未预期，并没有合同可以推断出：System.Collections.DictionaryEntry 的

But I have another exception: Type is not expected, and no contract can be inferred: System.Collections.DictionaryEntry

也许有人知道的方式我怎么可以序列化哈希表？

Maybe someone know a way how I can serialize hashtable?

推荐答案

感谢所有谁帮我。下面是我的解决方案。我知道这是不是最好的办法，但也许有人可以接受。

Thanks to all who helped me. Here is my solution. I know that this is not best way, but maybe for someone it acceptable.

    [ProtoContract]
    public class HashtableTestClass
    {
        private string inputParametersBase64 = string.Empty;
        private Hashtable myHashTable;

        public Hashtable MyHashtable
        {
            get { return myHashTable; }
            set { myHashTable = value; }
        }

        [ProtoMember(1)]
        public string InputParametersBase64
        {
            get
            {
                if (myHashTable == null)
                    return string.Empty;

                return HashtableToBase64(myHashTable);
            }
            set
            {
                inputParametersBase64 = value;
                if (!string.IsNullOrEmpty(inputParametersBase64))
                {
                    try
                    {
                        myHashTable = Base64ToHashtable(inputParametersBase64);
                    }
                    catch (Exception e)
                    {
                        Console.WriteLine(e);
                    }
                }
            }
        }

        public static Hashtable Base64ToHashtable(string s)
        {
            MemoryStream stream = new MemoryStream(Convert.FromBase64String(s), false);
            IFormatter formatter = new BinaryFormatter();

            return (Hashtable)formatter.Deserialize(stream);
        }

        public static string HashtableToBase64(Hashtable hashtable)
        {
            IFormatter formatter = new BinaryFormatter();
            MemoryStream stream = new MemoryStream();
            formatter.Serialize(stream, hashtable);
            stream.Close();
            return Convert.ToBase64String(stream.ToArray());
        }
    }

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