using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ServiceModel;
using System.IO;
namespace WCF.ServiceLib.Message
{
/**//// <summary>
/// 消息契约（定义与 SOAP 消息相对应的强类型类）
/// </summary>
    [MessageContract]
public class FileWrapper
{
/**//// <summary>
/// 指定数据成员为 SOAP 消息头
/// </summary>
        [MessageHeader]
public string FilePath;
/**//// <summary>
/// 指定将成员序列化为 SOAP 正文中的元素
/// </summary>
        [MessageBodyMember]
public Stream FileData;
}
/**//// <summary>
/// IStreamed接口
/// </summary>
    [ServiceContract]
public interface IStreamed
{
/**//// <summary>
/// 上传文件
/// </summary>
/// <remarks>
/// 1、支持数据流传输的绑定有：BasicHttpBinding、NetTcpBinding 和 NetNamedPipeBinding
/// 2、流数据类型必须是可序列化的 Stream 或 MemoryStream
        // /3、传递时消息体(Message Body)中不能包含其他数据，即参数中只能有一个System.ServiceModel.MessageBodyMember
        /**//// </remarks>
/// <param name="fileWrapper">WCF.ServiceLib.Message.FileWrapper</param>
        [OperationContract]
void UploadFile(FileWrapper fileWrapper);
}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ServiceModel;
using System.IO;
namespace WCF.ServiceLib.Message
{
/**//// <summary>
/// IStreamed类
/// </summary>
    public class Streamed : IStreamed
{
/**//// <summary>
/// 上传文件
/// </summary>
/// <param name="fileWrapper">WCF.ServiceLib.Message.FileWrapper</param>
        public void UploadFile(FileWrapper fileWrapper)
{
var sourceStream = fileWrapper.FileData;
var targetStream = new FileStream(fileWrapper.FilePath,
FileMode.Create,
FileAccess.Write,
FileShare.None);
var buffer = new byte[4096];
var count = 0;
while ((count = sourceStream.Read(buffer, 0, buffer.Length)) > 0)
{
targetStream.Write(buffer, 0, count);
}
targetStream.Close();
sourceStream.Close();
}
}
}