FileWebRequestTests.cs

using System;
using System.IO;
using System.Net;

using Microsoft.VisualStudio.TestTools.UnitTesting;

namespace CodeExamples.Tests
{
    [TestClass]
    public class FileWebRequestTests
    {
        #region Test methods

        [TestMethod]
        public void IsFileWebRequestsCreatesSuccessfully()
        {
            string desktopDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
            string sourcePath = @"\\some-network-path-to-your-file.txt";

            string destinationPath = Path.Combine(desktopDirectory, Path.GetFileName(sourcePath));

            WebRequest request = WebRequest.Create(sourcePath);

            Assert.IsNotNull(request);
            Assert.IsInstanceOfType(request, typeof(FileWebRequest));

            Stream responseStream = request.GetResponse().GetResponseStream();
            using (FileStream fileStream = new FileStream(destinationPath, FileMode.Create, FileAccess.ReadWrite))
            {
                responseStream.CopyTo(fileStream);
                fileStream.Flush(true);
            }
        }
        #endregion
    }
}