学步园

　　只要设置Graphics g的以下4个属性即可：

g.SmoothingMode = SmoothingMode.AntiAlias;
g.CompositingQuality = CompositingQuality.HighQuality;
g.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;
g.TextContrast = 12;