6. Trader - Get history data

Now it is time to get history data from Internet. There is new button "Get" on the right of URL text box named getHistory. Google's stock is chosen and after click on right Get button we have file named P:\Private\Analizator\GOOG-US.txt in our working directory.

     private void getHistory_Click(object sender, EventArgs e)
        {
            WebRequest req = WebRequest.Create(urlHistory.Text); // to use WebRequest we need to add "using System.Net;" row
            req.Proxy = null;                                       // i do not use proxy
            string selectedIndices = listIndices.SelectedItem.ToString();   // get selected indice
            selectedIndices=selectedIndices.Replace(":", "-");                      // file name can not contain ":"
            selectedIndices = workingPath + selectedIndices + ".txt";    // make full path,file name and add .txt extension as it is text file
            using (WebResponse res = req.GetResponse())             // get response from internet
            using (Stream s = res.GetResponseStream())              // make a stream
            using (StreamReader sr = new StreamReader(s)) File.WriteAllText(selectedIndices, sr.ReadToEnd()); // save stream to file

          //  System.Diagnostics.Process.Start(selectedIndices);    // remove comment and result can be seen in text editor
 
        }