Back to Basics: .NET 2.0 Document Streaming via WSI 1.1 Basic Profile Web Service

This post is for a colleague who will be working on streaming documents through a web service in .NET Framework 2.0. The interface being developed is mandated not use WCF, SOAP attachments or web service extensions.

The below sample demonstrates the use of a base64BinaryByteArray to recompose a physical document from a stream of bytes.

using System;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.IO;
using System.Text;
using System.Drawing;

[WebService(Namespace = "http://simeonlobo.blogspot.com")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class Service : System.Web.Services.WebService
{
    public Service () {

        //Uncomment the following line if using designed components 
        //InitializeComponent(); 
    }

    [WebMethod]
    public void CreateRecordWithDocument(string filename, 
                                         byte[] base64BinaryByteArray,
                                         string documentID)
    {
        try
        {
            //Example only: Recompose the document from a stream on NTFS
            FileStream fs = new(FileStream filename, FileMode.OpenOrCreate, FileAccess.Write);
            BinaryWriter writer = new BinaryWriter(fs);
            fs.Write(base64BinaryByteArray, 0, base64BinaryByteArray.Length);
            fs.Close();
            
            //Example only: Delete temporary document after you are finished with it
            File.Delete("D:\\" + filename);
        }
        catch (Exception exc)
        {
            WriteToErrorLog("CreateRecordWithDocument", exc.Message.ToString(), "D:\\error.log");
        }
    }

    public void WriteToErrorLog(string errorNumber, string errorDescription, string logFilePhyPath)
    {
        // create a writer and open the file
        TextWriter tw = new StreamWriter(logFilePhyPath);

        // write a line of text to the file
        tw.WriteLine(DateTime.Now + ", " + errorNumber + ", " + errorDescription);

        // close the stream
        tw.Close();
    }

}