public class IMGInfo

 {

  public DateTime Time;

  public byte Channel;

  public int Size;

 }

public class IMGIndex

 {

        public DateTime Time;

        public byte channel;

        public long start;

        public int len;

}

 

IMGIndex[] result=new IMGIndex[10]；

IMGIndex 2 IMGInfo：

var res = (from n in result select new IMGInfo { Channel = n.channel, Size = n.len, Time = n.Time }).ToArray();