C#

private void dgvReport_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
        {
            
            if (e.RowIndex == -1 && e.ColumnIndex >= 4)
            {
                e.PaintBackground(e.ClipBounds, true);
                Rectangle rect = 
                    this.dgvReport.GetColumnDisplayRectangle(e.ColumnIndex, true);
                Size titleSize =
                    TextRenderer.MeasureText(e.Value.ToString(), e.CellStyle.Font);
                if (this.dgvReport.ColumnHeadersHeight < titleSize.Width)
                    this.dgvReport.ColumnHeadersHeight = titleSize.Width;

                e.Graphics.TranslateTransform(0, titleSize.Width);
                e.Graphics.RotateTransform(-90.0F);

                e.Graphics.DrawString(e.Value.ToString(), e.CellStyle.Font, //this.Font,
                    Brushes.Black, new PointF(rect.Y, rect.X));

                e.Graphics.RotateTransform(90.0F);
                e.Graphics.TranslateTransform(0, -titleSize.Width);
                e.Handled = true;
            } 
            
        }

<br />
if (textBox1.Text.Length > 0)<br />
            {<br />
                String pat = "*.csv";<br />
                Regex r = new Regex (pat, RegexOptions.IgnoreCase);<br />
                Match m = r.Match(textBox1.Text);<br />
                if (m.Success)<br />
                {<br />
                    GetCSV(textBox1.Text);<br />
                }<br />

public string GetWebpageContent(string StockQuote)
{
    //Store url + desired Stock Quote
    //E.g. NYSE, MSFT
    string serverURL = "http://www.google.com/finance?q=" + StockQuote;

    //Create a HTTP request based on url
    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(serverURL);

    //Retrieve byte response from server base on the above request
    WebResponse response = request.GetResponse();

    //Retrieve content using StreamReader
    StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.ASCII);

    //Read content
    string retVal = reader.ReadToEnd();

    //Close the stream reader
    reader.Close();

    //Return data
    return retVal;
}

<div>After Hours:&nbsp;<span class=bld id="ref_21913_el">10.60</span>

<span class=bld....

public string GetStockPrice()
  {
      //Used to store the reverse Stock Price
      StringBuilder ReversePrice = new StringBuilder();

      //Store the actual price
      string Price = "";

      //Match the webpage content with the following pattern

      MatchCollection StockQuote = Regex.Matches(urlContent, "", RegexOptions.Singleline);

      //Retrieve the first matched result
      string StockPriceTag = StockQuote[0].Value; //"<span class=\"pr\">\n<span id=\"ref_705173_l\">26.83</span>"

      //Remove closing </span> tag
      string WithoutEndSpanTag = StockPriceTag.Remove(StockPriceTag.Length - 7, 7); //<span class=\"pr\">\n<span id=\"ref_705173_l\">26.83

      //Traverse through individual characters starting from the back
      for (int i = WithoutEndSpanTag.Length - 1; i >= 0; i--)
      {
          //Covert string to individual characters
          char[] AllChar = WithoutEndSpanTag.ToCharArray();

          //Check current item is not '>'
          if (AllChar[i] != '>')
          {
              ReversePrice.Append(AllChar[i]);
          }

          //MeetGreaterSymbol is true;
          else
          {
              //Covert string to individual characters
              char[] arr = ReversePrice.ToString().ToCharArray();

              //Reverse the order
              Array.Reverse(arr);

              //New string object
              Price = new string(arr);

              //Break out from loop
              break;
          }
      }

      //Return result
      return tbxStockQuote.Text + ", $" + Price;
  }