Create a web service project add the following code

    using System.IO;

    [WebMethod]
    public bool SaveDocument( Byte[] docbinaryarray, string docname)
    {
	    string strdocPath;
	    strdocPath = "C:\\DocumentDirectory\\" + docname;
	    FileStream objfilestream =new FileStream(strdocPath,FileMode.Create,FileAccess.ReadWrite);
	    objfilestream.Write(docbinaryarray,0,docbinaryarray.Length);
	    objfilestream.Close();

	    return true;
    }

    [WebMethod]
    public int GetDocumentLen(string DocumentName)
    {
	    string strdocPath;
	    strdocPath = "C:\\DocumentDirectory\\" + DocumentName;

	    FileStream objfilestream = new FileStream(strdocPath,FileMode.Open,FileAccess.Read);
	    int len = (int)objfilestream.Length;			
	    objfilestream.Close();

	    return len;
    } 


    [WebMethod]
    public Byte[] GetDocument(string DocumentName)
    {
	    string strdocPath;
	    strdocPath = "C:\\DocumentDirectory\\" + DocumentName;

	    FileStream objfilestream = new FileStream(strdocPath,FileMode.Open,FileAccess.Read);
	    int len = (int)objfilestream.Length;			
	    Byte[] documentcontents  = new Byte[len];
	    objfilestream.Read(documentcontents,0,len);
	    objfilestream.Close();

	    return documentcontents;	
    } 

• Create a directory C:\DocumentDirectory

Now for the client

• Create a windows application project in the same project as the web service and create a web reference to it, call it localhost
• Add 2 buttons called cmdSend and cmdGet and implement the click events.

	using System.IO;
	private void Form1_Load(object sender, EventArgs e)
        {

        }
        string sFile = "c:\\test.txt";

        private void cmdGet_Click(object sender, System.EventArgs e)
        {
            MemoryStream objstreaminput = new MemoryStream();
            FileStream objfilestream = new FileStream(sFile.Insert(sFile.LastIndexOf("."), "2"), FileMode.Create, FileAccess.ReadWrite);

            localhost.Service myservice = new localhost.Service();
            int len = (int)myservice.GetDocumentLen(sFile.Remove(0, sFile.LastIndexOf("\\") + 1));
            Byte[] mybytearray = new Byte[len];
            mybytearray = myservice.GetDocument(sFile.Remove(0, sFile.LastIndexOf("\\") + 1));
            objfilestream.Write(mybytearray, 0, len);
            objfilestream.Close();

        }

        private void cmdSend_Click(object sender, System.EventArgs e)
        {
           
            FileStream objfilestream = new FileStream(sFile, FileMode.Open, FileAccess.Read);
            int len = (int)objfilestream.Length;
            Byte[] mybytearray = new Byte[len];
            objfilestream.Read(mybytearray, 0, len);
            localhost.Service myservice = new localhost.Service();
            myservice.SaveDocument(mybytearray, sFile.Remove(0, sFile.LastIndexOf("\\") + 1));
            objfilestream.Close();
        }

• Create a file c:\test.txt
• Click Send button, file will be sent to c:\DocumentDirectory
• Click Get button, file will be pulled from c:\DocumentDirectory and saved in c:\test2.txt

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