java.io.File.getCanonicalPath() exception in C#.net....

HI
i have create a project having VSJLIB reference in it

when i have code it as follows

Code:

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<pre> public void CreateZipFile(string sPath)
  {
    FileOutputStream stream1 = null;
    ZipOutputStream stream2 = null;
    if (System.IO.File.Exists(sPath))
    {
        FileInfo info2 = new FileInfo(sPath);
        stream1 = new FileOutputStream(sPath.Replace
                                      (info2.Extension, ".zip"));
        stream2 = new ZipOutputStream(stream1);
                        this.ZipOneFile(stream1, stream2,  sPath);
    }
    else if (Directory.Exists(sPath))
    {
        stream1 = new FileOutputStream(sPath + ".zip");
        stream2 = new ZipOutputStream(stream1);
        DirectoryInfo info1 = new DirectoryInfo(sPath);
        this.ZipDirectory(stream1, stream2, info1, sPath);
    }
    stream2.close();
    stream1.close();
    stream2.flush();
    stream1.flush();
    }

    private void CopyStream(FileInputStream src, ZipOutputStream
                                                            dest)
    {
        InputStreamReader reader1 = new InputStreamReader(src);
        OutputStreamWriter writer1 = new OutputStreamWriter(dest);
        while (reader1.ready())
        {
          writer1.write(reader1.read());
        }
        writer1.flush();
    }
               
    /*ZipDirectory Method zips the entire directory*/
    private void ZipDirectory(FileOutputStream fos, ZipOutputStream
                            zos, DirectoryInfo di, string SRootDir)
    {
        FileInfo[] infoArray2 = di.GetFiles();
        foreach (FileInfo info2 in infoArray2)
        {
          ZipEntry entry1 = new ZipEntry
              (info2.FullName.Substring(SRootDir.LastIndexOf(@"\")));
          entry1.setMethod(8);
          zos.putNextEntry(entry1);
          FileInputStream stream1 = new FileInputStream
                                      (info2.FullName);
                  this.CopyStream(stream1, zos);
          zos.closeEntry();
          stream1.close();
        }
        DirectoryInfo[] infoArray1 = di.GetDirectories();
        foreach (DirectoryInfo info1 in infoArray1)
        {
          this.ZipDirectory(fos, zos, info1, SRootDir);
        }
    }
</pre>

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but when i run the code it gives me excetion

<big>java.io.File.getCanonicalPath() </big>

what should i do to run the code ???

any suggesations ???

What's the exception? :)