byte[] ssHead = System.Text.Encoding.Unicode.GetBytes("This is Head:");
byte[] ssContent = System.Text.Encoding.Unicode.GetBytes("This is Content.");
//ssHead + ssContent
byte[] ssMessage = new byte[ssHead.Length + ssContent.Length];
ssHead.CopyTo(ssMessage, 0);
ssContent.CopyTo(ssMessage, ssHead.Length);
string sMessage = System.Text.Encoding.Unicode.GetString(ssMessage);
Console.WriteLine(sMessage);
Console.ReadLine();
//输出结果为:
This is Head:This is Content.