一段绘制图片代码的问题
Bitmap mybitmap=new Bitmap(2000,2000);
mybitmap.SetResolution(350f,350f);
Graphics huabi=Graphics.FromImage(mybitmap);
huabi.CompositingQuality=CompositingQuality.HighQuality;
huabi.SmoothingMode=SmoothingMode.HighQuality;
huabi.TextRenderingHint=TextRenderingHint.ClearTypeGridFit;
huabi.FillRectangle(Brushes.White,0,0,2000,2000);
huabi.PageUnit=GraphicsUnit.Millimeter;
huabi.DrawString("测试质量!test!ABCDabcd!@#12334556789",new Font("Times New Roman",9f),Brushes.Black,new Point(2,5));
mybitmap.Save("c:\\test.Jpeg",ImageFormat.Jpeg);
MessageBox.Show("成功");
//代码很简单在图上绘制文字并尽可能清晰,但是将图片打印出来后,字体质量还行
问题是为什么文字周围会出现大量的黑点(离近了才能看清)如何消除这些黑点 小弟拜谢