[原创翻译]Protocol Buffer Basics: C#

syntax = "proto3";
package tutorial;

option csharp_namespace = "Google.Protobuf.Examples.AddressBook";

message Person {
  string name = 1;
  int32 id = 2;  // Unique ID number for this person.
  string email = 3;

  enum PhoneType {
    MOBILE = 0;
    HOME = 1;
    WORK = 2;
  }

  message PhoneNumber {
    string number = 1;
    PhoneType type = 2;
  }

  repeated PhoneNumber phones = 4;
}

// Our address book file is just one of these.
message AddressBook {
  repeated Person people = 1;
}

Person john = new Person
{
    Id = 1234,
    Name = "John Doe",
    Email = "jdoe@example.com",
    Phones = { new Person.Types.PhoneNumber { Number = "555-4321", Type = Person.Types.PhoneType.HOME } }
};

// Add this to the other using directives
using static Google.Protobuf.Examples.AddressBook.Person.Types;
...
// The earlier Phones assignment can now be simplified to:
Phones = { new PhoneNumber { Number = "555-4321", Type = PhoneType.HOME } }

using Google.Protobuf;
...
Person john = ...; // Code as before
using (var output = File.Create("john.dat"))
{
    john.WriteTo(output);
}

Person john;
using (var input = File.OpenRead("john.dat"))
{
    john = Person.Parser.ParseFrom(input);
}

public void PrintMessage(IMessage message)
{
    var descriptor = message.Descriptor;
    foreach (var field in descriptor.Fields.InDeclarationOrder())
    {
        Console.WriteLine(
            "Field {0} ({1}): {2}",
            field.FieldNumber,
            field.Name,
            field.Accessor.GetValue(message);
    }
}