Upload/Download file to/from WSS document library using DAV

I recently had to do this in an WPF client application.

Basically this is a static class that provides the following two methods

• UploadFile - To upload a file to a WSS document library.
• DownloadFile - To download a file from as WSS document library.

Usage:

• DAVHelper.UploadFile("http://servername/DL/test.txt", "C:\test.txt");
• DAVHelper.DownloadFile("http://servername/DL/test.txt", "C:\test.txt");

DAVHelper.cs

using System;

using System.Collections.Generic;

using System.Text;

using System.IO;

using System.Web;

using System.Net;

using System.Data;

using System.Diagnostics;

namespace DAVWrapper

{

public static class DAVHelper

{

public static string UploadFile(string destUrl, string sourcePath)

{

try

{

Uri destUri = new Uri(destUrl);

FileStream inStream = File.OpenRead(sourcePath);

WebRequest req = WebRequest.Create(destUri);

req.Method = "PUT"

req.Headers.Add("Overwrite", "F");

req.Timeout = System.Threading.Timeout.Infinite;

req.Credentials = CredentialCache.DefaultCredentials;

Stream outStream = req.GetRequestStream();

string status = CopyStream(inStream, outStream);

if (status == "success")

{

outStream.Close();

WebResponse ores = req.GetResponse();

return "success"

}

else

{

return status;

}

}

catch (WebException we)

{

return we.Message;

}

catch (System.Exception ee)

{

return ee.Message;

}

}

public static string DownloadFile(string sourceUrl, string destFolder)

{

try

{

System.Uri sourceUri = new System.Uri(sourceUrl);

WebRequest req = WebRequest.Create(sourceUri);

req.Method = "GET"

req.Timeout = System.Threading.Timeout.Infinite;

req.Credentials = CredentialCache.DefaultCredentials;

WebResponse res = req.GetResponse();

Stream inStream = res.GetResponseStream();

FileStream fs = new FileStream(destFolder, FileMode.OpenOrCreate);

string status = CopyStream(inStream, fs);

if (status == "success")

{

inStream.Close();

return "success"

}

else

{

inStream.Close();

return status;

}

}

catch (WebException we)

{

return we.Message;

}

catch (System.Exception ee)

{

return ee.Message;

}

}

private static string CopyStream(Stream inStream, Stream outStream)

{

try

{

byte[] buffer = new byte[1024];

for (; ; )

{

int numBytesRead = inStream.Read(buffer, 0, buffer.Length);

if (numBytesRead <= 0)

break;

outStream.Write(buffer, 0, numBytesRead);

}

inStream.Close();

return "success"

}

catch (System.Exception ee)

{

return ee.Message;

}

}

}

}