Saving File on Desktop by c#

Question

I am using a web service that returns me some data. I am writing that data in a text file. my problem is that I am having a file already specified in the c# code, where I want to open a dialog box which ask user to save file in his desired location. Here I am posting code which I have used. Please help me in modifying my code. Actually after searching from internet, all are having different views and there is lot of changes in code required where as I do not want to change my code in extent. I am able to write the content in test file but how can I ask user to enter his desire location on computer?

  StreamWriter file = new StreamWriter("D:\\test.txt");
 HttpWebRequest webreq = (HttpWebRequest)WebRequest.Create(yahooURL);
                // Get the response from the Internet resource.
                HttpWebResponse webresp = (HttpWebResponse)webreq.GetResponse();
                // Read the body of the response from the server.
                StreamReader strm =
                  new StreamReader(webresp.GetResponseStream(), Encoding.ASCII);

 string content = "";
                for (int i = 0; i < symbols.Length; i++)
                {
                    // Loop through each line from the stream,
                    // building the return XML Document string
                    if (symbols[i].Trim() == "")
                        continue;

                    content = strm.ReadLine().Replace("\"", "");
                    string[] contents = content.ToString().Split(',');
                    foreach (string dataToWrite in contents)
                    {
                        file.WriteLine(dataToWrite);
                    }

                }
                file.Close();

Answer 1

Try this

using (WebClient Client = new WebClient ())
{
    Client.DownloadFile("http://www.abc.com/file/song/a.mpeg", "a.mpeg");
}