c# - Generating IDAutomationHC39M barcode is generating well but need to remove value -

hi using below code , bar code generating how can remove text written down label.

 public void generatebarcode(string id)     {         int w = id.length * 55;         bitmap obitmap = new bitmap(w, 100);         graphics ographics = graphics.fromimage(obitmap);         font ofont = new font("idautomationhc39m", 18);         pointf opoint = new pointf(2f, 2f);         solidbrush obrushwrite = new solidbrush(color.black);         solidbrush obrush = new solidbrush(color.white);         ographics.fillrectangle(obrush, 0, 0, w, 100);         ographics.drawstring("*" + id + "*", ofont, obrushwrite, opoint);         system.web.ui.webcontrols.image imgbarcode = new system.web.ui.webcontrols.image();          using (system.io.filestream fs = system.io.file.open(server.mappath("~/img/barcodes/") + id + ".jpg", filemode.create))         {             obitmap.save(fs, system.drawing.imaging.imageformat.jpeg);          }         obitmap.dispose();         imgbarcode.imageurl = "~/img/barcodes/" + id + ".jpg"; } 

my bar code generating below. here need remove bar code text 76

according this, font need use without text "idautomationc39m". unfortunately, that's not in free version.