最近看到同事小红在做一维码,感觉挺好玩,于是就在网上找了一个例子来玩玩。
/// <summary> /// 生成条码 Bitmap,自定义条码高度,自定义文字对齐样式 /// </summary> /// <param name="sourceCode"></param> /// <param name="barCodeHeight"></param> /// <param name="sf"></param> /// <returns></returns> public Bitmap GetCode39(string sourceCode, int barCodeHeight, StringFormat sf) { BarCodeText = sourceCode.ToUpper(); int leftMargin = 5; int topMargin = 0; int thickLength = 2; int narrowLength = 1; int intSourceLength = sourceCode.Length; string strEncode = "010010100" ; //添加起始码“ *”. var font = new System.Drawing.Font( "Segoe UI", 5); string AlphaBet = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%*" ; string[] Code39 = { /* 0 */ "000110100" , /* 1 */ "100100001" , /* 2 */ "001100001" , /* 3 */ "101100000" , /* 4 */ "000110001" , /* 5 */ "100110000" , /* 6 */ "001110000" , /* 7 */ "000100101" , /* 8 */ "100100100" , /* 9 */ "001100100" , /* A */ "100001001" , /* B */ "001001001" , /* C */ "101001000" , /* D */ "000011001" , /* E */ "100011000" , /* F */ "001011000" , /* G */ "000001101" , /* H */ "100001100" , /* I */ "001001100" , /* J */ "000011100" , /* K */ "100000011" , /* L */ "001000011" , /* M */ "101000010" , /* N */ "000010011" , /* O */ "100010010" , /* P */ "001010010" , /* Q */ "000000111" , /* R */ "100000110" , /* S */ "001000110" , /* T */ "000010110" , /* U */ "110000001" , /* V */ "011000001" , /* W */ "111000000" , /* X */ "010010001" , /* Y */ "110010000" , /* Z */ "011010000" , /* - */ "010000101" , /* . */ "110000100" , /*' '*/ "011000100" , /* $ */ "010101000" , /* / */ "010100010" , /* + */ "010001010" , /* % */ "000101010" , /* * */ "010010100" }; sourceCode = sourceCode.ToUpper(); Bitmap objBitmap = new Bitmap(((thickLength * 3 + narrowLength * 7) * (intSourceLength + 2)) + (leftMargin * 2), barCodeHeight + (topMargin * 2)); Graphics objGraphics = Graphics.FromImage(objBitmap); objGraphics.FillRectangle( Brushes.White, 0, 0, objBitmap.Width, objBitmap.Height); for (int i = 0; i < intSourceLength; i++) { //非法字符校验 if (AlphaBet.IndexOf(sourceCode[i]) == -1 || sourceCode[i] == '*' ) { objGraphics.DrawString( "Invalid Bar Code", SystemFonts.DefaultFont, Brushes .Red, leftMargin, topMargin); return objBitmap; } //编码 strEncode = string.Format("{0}0{1}" , strEncode, Code39[AlphaBet.IndexOf(sourceCode[i])]); } strEncode = string.Format("{0}0010010100" , strEncode); //添加结束码“*” int intEncodeLength = strEncode.Length; int intBarWidth; for (int i = 0; i < intEncodeLength; i++) //绘制 Code39 barcode { intBarWidth = strEncode[i] == '1' ? thickLength : narrowLength; objGraphics.FillRectangle(i % 2 == 0 ? Brushes.Black : Brushes .White, leftMargin, topMargin, intBarWidth, barCodeHeight); leftMargin += intBarWidth; } //绘制明码 Font barCodeTextFont = new Font( "黑体" , 10F); RectangleF rect = new RectangleF(2, barCodeHeight - 20, objBitmap.Width - 4, 20); objGraphics.FillRectangle( Brushes.White, rect); //文本对齐 objGraphics.DrawString(BarCodeText, barCodeTextFont, Brushes.Black, rect, sf); return objBitmap; }
好了,如果有兴趣的同学就可以去看看怎么实现自己的想要的一维码了。