C# Drawstring clear rectangle Or no rectangle? possible

Question

here is the code i'm using, i really need to make it so the text does not appear inside of a box. is that possible?

int width = (int)g.MeasureString(line, f).Width;
int height = (int)g.MeasureString(line,f).Height;
b = new Bitmap(b, new Size(width, height));
g = Graphics.FromImage(b);

g.Clear(Color.Empty);
g.DrawString(line,f, new SolidBrush(Color.Black), 0, 0);
b.Save(savepoint+line+".tif", System.Drawing.Imaging.ImageFormat.Tiff); 
g.Flush();

What i mean is there can be no Rectangle around the text that is converted to image. So I need to watch it to the same color to create the illusion there is no box, or to never write out that rectangle period.

Answer 1

Use the color Transparent for the backgtround and a file format that supports transparency, like PNG:

var measure = g.MeasureString(line, f);
int width = (int)measure.Width;
int height = (int)measure.Height;
using (Bitmap b = new Bitmap(width, height)) {
  using (Graphics bg = Graphics.FromImage(b)) {
    bg.Clear(Color.Transparent);
    using (Brush black = new SolidBrush(Color.Black)) {
      bg.DrawString(line, f, black, 0, 0);
    }
  }
  b.Save(savepoint+line+".png", System.Drawing.Imaging.ImageFormat.Png); 
}

I notice that you did overwrite your Graphics instance, didn't dispose the objects that you create, and called Graphics.Flush for no apparent reason...