我在asp.net网络应用程序中生成了动态条形码图像,但它没有通过条形码扫描器进行扫描/读取。 下面是我生成条形码图像的代码。请找出它。 需要你的建议和帮助,等待你的回复。
string barCode = LblSerialNo.Text;
System.Web.UI.WebControls.Image imgBarCode = new System.Web.UI.WebControls.Image();
using (Bitmap bitMap = new Bitmap(barCode.Length * 11, 45))
{
using (Graphics graphics = Graphics.FromImage(bitMap))
{
Font oFont = new Font("IDAutomationHC39M", 8);
PointF point = new PointF(2f, 2f);
SolidBrush blackBrush = new SolidBrush(Color.Black);
SolidBrush whiteBrush = new SolidBrush(Color.White);
graphics.FillRectangle(whiteBrush, 0, 0, bitMap.Width, bitMap.Height);
graphics.DrawString(barCode, oFont, blackBrush, point);
}
using (MemoryStream ms = new MemoryStream())
{
bitMap.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
byte[] byteImage = ms.ToArray();
Convert.ToBase64String(byteImage);
imgBarCode.ImageUrl = "data:image/png;base64," + Convert.ToBase64String(byteImage);
}
plBarCode.Controls.Add(imgBarCode);
}