引言
基于生成图片实现了一个手机号转图片的需求。 内容也很简单，直接用手机号生成一个png图片。就是为了背景透明以便其他地方调用。 有无锯齿主要依靠一句代码：g.textrenderinghint= textrenderinghint.antialias;
生成图片
1、有锯齿
2、无锯齿
生成方法
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string color = "#ff6633";
system.drawing.bitmap image = new system.drawing.bitmap(170, 35);
graphics g = graphics.fromimage(image);
try
{
g.textrenderinghint= textrenderinghint.antialias; //消除锯齿
//生成随机生成器
random random = new random();
//清空图片背景色
//g.clear(color.transparent);
//画图片的背景噪音线
/*for (int i = 0; i < 2; i++)
{
int x1 = random.next(image.width);
int x2 = random.next(image.width);
int y1 = random.next(image.height);
int y2 = random.next(image.height);
g.drawline(new pen(color.black), x1, y1, x2, y2);
}
*/
system.drawing.colorconverter colconvert = new system.drawing.colorconverter();
color fontcolor =(system.drawing.color)colconvert.convertfromstring(color);
font font = new system.drawing.font("arial", 18, system.drawing.fontstyle.bold);
lineargradientbrush brush = new lineargradientbrush(new rectangle(0, 0, image.width, image.height), fontcolor, fontcolor,lineargradientmode.horizontal);
g.drawstring(phone, font, brush, 2, 2);
//画图片的前景噪音点
//for (int i = 0; i < 50; i++)
//{
// int x = random.next(image.width);
// int y = random.next(image.height);
// image.setpixel(x, y, color.fromargb(random.next()));
//}
//画图片的边框线
//g.drawrectangle(new pen(color.white), 0, 0, image.width - 1, image.height - 1);
system.io.memorystream ms = new system.io.memorystream();
color backcolor = image.getpixel(1, 1);
image.maketransparent(backcolor);
image.save(ms, system.drawing.imaging.imageformat.png);
context.response.clearcontent();
context.response.contenttype = "image/x-png";
context.response.binarywrite(ms.toarray());
}
finally
{
g.dispose();
image.dispose();
}
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参考资料
http://www.blue1000.com/bkhtml/c17/2013-03/71115.htm
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：http://www.cnblogs.com/sword-successful/archive/2016/09/18/5880866.html