简单的protobuf-net代码片段...对二元格式化的基础de / serialize long [，]

Question

以下（工作......）.net c＃片段如何将长[，] xlate /序列化为protobuf-net？

using System.Runtime.Serialization.Formatters.Binary;//.BinaryFormatter;
/*???using protobuf-net;//from protobuf-net r688.zip CoreOnly\mono\*/
....
public BinaryFormatter B=new BinaryFormatter();
public FileStream s;
public long[,]E=new long[10,4];
....
using(s=new FileStream(filnm,FileMode.Create,FileAccess.Write))B.Serialize(s,E);
....
using(s=new FileStream(filnm,FileMode.Open,FileAccess.Read))E=long[,])B.Deserialize(s);
....