从评论和聊天看来，其中的关键部分仍然是创建动态类型。好的，这是一个完整的示例，显示了一个完全可序列化的（通过任何常见的序列化程序）类型。您当然可以在类型中添加更多内容-
可能是索引器，以按数字或按名称
INotifyPropertyChanged等获取属性。
另外-关键点：您 必须 缓存并重新使用生成的
Type实例。不要 不 守再生这个东西......你会出血内存。
using Newtonsoft.Json;using ProtoBuf;using System;using System.IO;using System.Reflection;using System.Reflection.Emit;using System.Runtime.Serialization;using System.Runtime.Serialization.Formatters.Binary;using System.Text;using System.Xml.Serialization;public interface IBasicRecord{ object this[int field] { get; set; }}class Program{ static void Main() { object o = 1; int foo = (int)o; string[] names = { "Id", "Name", "Size", "When" }; Type[] types = { typeof(int), typeof(string), typeof(float), typeof(DateTime?) }; var asm = AppDomain.CurrentDomain.DefineDynamicAssembly( new AssemblyName("DynamicStuff"), AssemblyBuilderAccess.Run); var module = asm.DefineDynamicModule("DynamicStuff"); var tb = module.DefineType("MyType", TypeAttributes.Public | TypeAttributes.Serializable); tb.SetCustomAttribute(new CustomAttributeBuilder( typeof(DataContractAttribute).GetConstructor(Type.EmptyTypes), new object[0])); tb.AddInterfaceImplementation(typeof(IBasicRecord)); FieldBuilder[] fields = new FieldBuilder[names.Length]; var dataMemberCtor = typeof(DataMemberAttribute).GetConstructor(Type.EmptyTypes); var dataMemberProps = new[] { typeof(DataMemberAttribute).GetProperty("Order") }; for (int i = 0; i < fields.Length; i++) { var field = fields[i] = tb.DefineField("_" + names[i], types[i], FieldAttributes.Private); var prop = tb.DefineProperty(names[i], PropertyAttributes.None, types[i], Type.EmptyTypes); var getter = tb.DefineMethod("get_" + names[i], MethodAttributes.Public | MethodAttributes.HideBySig, types[i], Type.EmptyTypes); prop.SetGetMethod(getter); var il = getter.GetILGenerator(); il.Emit(OpCodes.Ldarg_0); // this il.Emit(OpCodes.Ldfld, field); // .Foo il.Emit(OpCodes.Ret); // return var setter = tb.DefineMethod("set_" + names[i], MethodAttributes.Public | MethodAttributes.HideBySig, typeof(void), new Type[] { types[i] }); prop.SetSetMethod(setter); il = setter.GetILGenerator(); il.Emit(OpCodes.Ldarg_0); // this il.Emit(OpCodes.Ldarg_1); // value il.Emit(OpCodes.Stfld, field); // .Foo = il.Emit(OpCodes.Ret); prop.SetCustomAttribute(new CustomAttributeBuilder( dataMemberCtor, new object[0], dataMemberProps, new object[1] { i + 1 })); } foreach (var prop in typeof(IBasicRecord).GetProperties()) { var accessor = prop.GetGetMethod(); if (accessor != null) { var args = accessor.GetParameters(); var argTypes = Array.ConvertAll(args, a => a.ParameterType); var method = tb.DefineMethod(accessor.Name, accessor.Attributes & ~MethodAttributes.Abstract, accessor.CallingConvention, accessor.ReturnType, argTypes); tb.DefineMethodOverride(method, accessor); var il = method.GetILGenerator(); if (args.Length == 1 && argTypes[0] == typeof(int)) { var branches = new Label[fields.Length]; for (int i = 0; i < fields.Length; i++) { branches[i] = il.DefineLabel(); } il.Emit(OpCodes.Ldarg_1); // key il.Emit(OpCodes.Switch, branches); // switch // default: il.ThrowException(typeof(ArgumentOutOfRangeException)); for (int i = 0; i < fields.Length; i++) { il.MarkLabel(branches[i]); il.Emit(OpCodes.Ldarg_0); // this il.Emit(OpCodes.Ldfld, fields[i]); // .Foo if (types[i].IsValueType) { il.Emit(OpCodes.Box, types[i]); // (object) } il.Emit(OpCodes.Ret); // return } } else { il.ThrowException(typeof(NotImplementedException)); } } accessor = prop.GetSetMethod(); if (accessor != null) { var args = accessor.GetParameters(); var argTypes = Array.ConvertAll(args, a => a.ParameterType); var method = tb.DefineMethod(accessor.Name, accessor.Attributes & ~MethodAttributes.Abstract, accessor.CallingConvention, accessor.ReturnType, argTypes); tb.DefineMethodOverride(method, accessor); var il = method.GetILGenerator(); if (args.Length == 2 && argTypes[0] == typeof(int) && argTypes[1] == typeof(object)) { var branches = new Label[fields.Length]; for (int i = 0; i < fields.Length; i++) { branches[i] = il.DefineLabel(); } il.Emit(OpCodes.Ldarg_1); // key il.Emit(OpCodes.Switch, branches); // switch // default: il.ThrowException(typeof(ArgumentOutOfRangeException)); for (int i = 0; i < fields.Length; i++) { il.MarkLabel(branches[i]); il.Emit(OpCodes.Ldarg_0); // this il.Emit(OpCodes.Ldarg_2); // value il.Emit(types[i].IsValueType ? OpCodes.Unbox_Any : OpCodes.Castclass, types[i]); // (SomeType) il.Emit(OpCodes.Stfld, fields[i]); // .Foo = il.Emit(OpCodes.Ret); // return } } else { il.ThrowException(typeof(NotImplementedException)); } } } var type = tb.CreateType(); var obj = Activator.CreateInstance(type); // we'll use the index (via a known interface) to set the values IBasicRecord rec = (IBasicRecord)obj; rec[0] = 123; rec[1] = "abc"; rec[2] = 12F; rec[3] = DateTime.Now; for (int i = 0; i < 4; i++) { Console.WriteLine("{0} = {1}", i, rec[i]); } using (var ms = new MemoryStream()) { var ser = new XmlSerializer(type); ser.Serialize(ms, obj); Console.WriteLine("XmlSerializer: {0} bytes", ms.Length); } using (var ms = new MemoryStream()) { using (var writer = new StreamWriter(ms, Encoding.UTF8, 1024, true)) { var ser = new JsonSerializer(); ser.Serialize(writer, obj); } Console.WriteLine("Json.NET: {0} bytes", ms.Length); } using (var ms = new MemoryStream()) { var ser = new DataContractSerializer(type); ser.WriteObject(ms, obj); Console.WriteLine("DataContractSerializer: {0} bytes", ms.Length); } using (var ms = new MemoryStream()) { Serializer.NonGeneric.Serialize(ms, obj); Console.WriteLine("protobuf-net: {0} bytes", ms.Length); } using (var ms = new MemoryStream()) { // note: NEVER do this unless you have a custom Binder; your // assembly WILL NOT deserialize in the next AppDomain (i.e. // the next time you load your app, you won't be able to load) // - shown only for illustration var bf = new BinaryFormatter(); bf.Serialize(ms, obj); Console.WriteLine("BinaryFormatter: {0} bytes", ms.Length); } }}输出：
XmlSerializer: 246 bytesJson.NET: 81 bytesDataContractSerializer: 207 bytesprotobuf-net: 25 bytesBinaryFormatter: 182 bytes
