C# barcode生成代码

protected void Page_Load(object sender, EventArgs e)
{
string code = Request.Params["code"];
if (string.IsNullOrEmpty(code))
{
code = "*123456789*";
}
Bitmap bitMap = new Bitmap(1700, 300);
Graphics g = Graphics.FromImage(bitMap);

Font font = new Font("C39HrP36DmTt", 200, FontStyle.Regular);
Font fontKaitiLarge = new Font("KaiTi", 24, FontStyle.Regular);
Font fontKaitiSmail = new Font("KaiTi", 18, FontStyle.Regular);
SolidBrush b = new SolidBrush(Color.White);//这里修改颜色
g.FillRectangle(b, 0, 0, 1700, 1000);

g.DrawString(code, font, Brushes.Black, new PointF(0, 0));
MemoryStream ms = new MemoryStream();
bitMap.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
Response.ClearContent();
Response.ContentType = "image/Jpeg";
Response.BinaryWrite(ms.ToArray());//这里的Write改成BinaryWrite即可
Response.End();
}