How to Download the File using HttpWebRequest and HttpWebResponse class(Cookies,Credentials,etc.)

Question

Thanks icktoofay, I tried using HttpWebRequest and HttpWebResponse.

When I request for URL by passing the Credentials like UserName And P

Answer 1

public override DownloadItems GetItemStream(string itemID, object config = null, string downloadURL = null, string filePath = null, string)
    {
        DownloadItems downloadItems = new DownloadItems();
        try
        {
            if (!string.IsNullOrEmpty(filePath))
            {
                using (FileStream fileStream = new System.IO.FileStream(filePath, System.IO.FileMode.OpenOrCreate, System.IO.FileAccess.Write))
                {
                    if (!string.IsNullOrEmpty(downloadURL))
                    {
                        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(downloadURL);
                        request.Method = WebRequestMethods.Http.Get;
                        request.PreAuthenticate = true;
                        request.UseDefaultCredentials = true;
                        const int BUFFER_SIZE = 16 * 1024;
                        {
                            using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
                            {
                                using (var responseStream = response.GetResponseStream())
                                {
                                    var buffer = new byte[BUFFER_SIZE];
                                    int bytesRead;
                                    do
                                    {
                                        bytesRead = responseStream.Read(buffer, 0, BUFFER_SIZE);
                                        fileStream.Write(buffer, 0, bytesRead);
                                    } while (bytesRead > 0);
                                }
                            }
                            fileStream.Close();
                            downloadItems.IsSuccess = true;
                        }
                    }
                    else
                        downloadItems.IsSuccess = false;
                }
            }
        }
        catch (Exception ex)
        {
            downloadItems.IsSuccess = false;
            downloadItems.Exception = ex;
        }
        return downloadItems;
    }