Save text file contents as an image

Question

I am trying to convert the contents of a text file to an image using C#, but I cannot seem to do it. I get the annoying A generic error occurred in GDI+. error from System.Drawing.

Here is my actual code:

public static Bitmap ConvertTextToImage(string txt, string fontname, int fontsize, Color bgcolor, Color fcolor, int width, int Height)
{
    Bitmap bmp = new Bitmap(width, Height);
    using (Graphics graphics = Graphics.FromImage(bmp))
    {
        Font font = new Font(fontname, fontsize);
        graphics.FillRectangle(new SolidBrush(bgcolor), 0, 0, bmp.Width, bmp.Height);
        graphics.DrawString(txt, font, new SolidBrush(fcolor), 0, 0);
        graphics.Flush();
        font.Dispose();
        graphics.Dispose();
    }
    bmp.Save("C:\\" + Guid.NewGuid().ToString() + ".bmp");
    Convert(bmp);
    return bmp;
}

So at the line bmp.Save("C:\\" + Guid.NewGuid().ToString() + ".bmp"); when I try to save the image, it brings this error. I read posts and similar questions and wrapped everything around a using statement as suggested at multiple sources, but I am still missing something and cannot figure it out.

I use the File.ReadAllText(path); to read the contents of the text file and then I make a normal call to my method:

ConvertTextToImage(content, "Bookman Old Style", 10, Color.White, Color.Black, width, height);

Answer 1

Due to UAC, your are getting the generic error because you are trying to write to the root directory of the C: drive, which is not allowed in Windows.

Changing the line

bmp.Save("C:\\" + Guid.NewGuid().ToString() + ".bmp");

to

bmp.Save("C:\\Temp\\" + Guid.NewGuid().ToString() + ".bmp");

(or any other folder that you have permissions for), allows the successful creation of the image.