条形码

public static void Paint_EAN13(string Numbers12bit, Graphics g, Rectangle drawBounds) { string barCode = getENA13Code(Numbers12bit); char[] symbols = barCode.ToCharArray(); //--- Validate barCode -------------------------------------------------------------------// if (barCode.Length != 13) { return; } foreach (char c in symbols) { if (!Char.IsDigit(c)) { return; } } //--- Check barcode checksum ------------------------// int checkSum = Convert.ToInt32(symbols[12].ToString()); int calcSum = 0; bool one_three = true; for (int i = 0; i < 12; i++) { if (one_three) { calcSum += (Convert.ToInt32(symbols[i].ToString()) * 1); one_three = false; } else { calcSum += (Convert.ToInt32(symbols[i].ToString()) * 3); one_three = true; } } char[] calcSumChar = calcSum.ToString().ToCharArray(); if (checkSum != 0 && checkSum != (10 - Convert.ToInt32(calcSumChar[calcSumChar.Length - 1].ToString()))) { return; } //--------------------------------------------------// //---------------------------------------------------------------------------------------// Font font = new Font("Microsoft Sans Serif", 8); // Fill backround with white color // g.Clear(Color.White); int lineWidth =1; int x = drawBounds.X; // Paint human readable 1 system symbol code g.DrawString(symbols[0].ToString(), font, new SolidBrush(Color.Black), x, drawBounds.Y + drawBounds.Height - 16); x += 10; // Paint left 'guard bars', always same '101' g.DrawLine(new Pen(Color.Black, lineWidth), x, drawBounds.Y, x, drawBounds.Y + drawBounds.Height); x += lineWidth; g.DrawLine(new Pen(Color.White, lineWidth), x, drawBounds.Y, x, drawBounds.Y + drawBounds.Height); x += lineWidth; g.DrawLine(new Pen(Color.Black, lineWidth), x, drawBounds.Y, x, drawBounds.Y + drawBounds.Height); x += lineWidth; // First number of barcode specifies how to encode each character in the left-hand // side of the barcode should be encoded. bool[] leftSideParity = new bool[6]; switch (symbols[0]) { case '0': leftSideParity[0] = true; // Odd leftSideParity[1] = true; // Odd leftSideParity[2] = true; // Odd leftSideParity[3] = true; // Odd leftSideParity[4] = true; // Odd leftSideParity[5] = true; // Odd break; case '1': leftSideParity[0] = true; // Odd leftSideParity[1] = true; // Odd leftSideParity[2] = false; // Even leftSideParity[3] = true; // Odd leftSideParity[4] = false; // Even leftSideParity[5] = false; // Even break; case '2': leftSideParity[0] = true; // Odd leftSideParity[1] = true; // Odd leftSideParity[2] = false; // Even leftSideParity[3] = false; // Even leftSideParity[4] = true; // Odd leftSideParity[5] = false; // Even break; case '3': leftSideParity[0] = true; // Odd leftSideParity[1] = true; // Odd leftSideParity[2] = false; // Even leftSideParity[3] = false; // Even leftSideParity[4] = false; // Even leftSideParity[5] = true; // Odd break; case '4': leftSideParity[0] = true; // Odd leftSideParity[1] = false; // Even leftSideParity[2] = true; // Odd leftSideParity[3] = true; // Odd leftSideParity[4] = false; // Even leftSideParity[5] = false; // Even break; case '5': leftSideParity[0] = true; // Odd leftSideParity[1] = false; // Even leftSideParity[2] = false; // Even leftSideParity[3] = true; // Odd leftSideParity[4] = true; // Odd leftSideParity[5] = false; // Even break; case '6': leftSideParity[0] = true; // Odd leftSideParity[1] = false; // Even leftSideParity[2] = false; // Even leftSideParity[3] = false; // Even leftSideParity[4] = true; // Odd leftSideParity[5] = true; // Odd break; case '7': leftSideParity[0] = true; // Odd leftSideParity[1] = false; // Even leftSideParity[2] = true; // Odd leftSideParity[3] = false; // Even leftSideParity[4] = true; // Odd leftSideParity[5] = false; // Even break; case '8': leftSideParity[0] = true; // Odd leftSideParity[1] = false; // Even leftSideParity[2] = true; // Odd leftSideParity[3] = false; // Even leftSideParity[4] = false; // Even leftSideParity[5] = true; // Odd break; case '9': leftSideParity[0] = true; // Odd leftSideParity[1] = false; // Even leftSideParity[2] = false; // Even leftSideParity[3] = true; // Odd leftSideParity[4] = false; // Even leftSideParity[5] = true; // Odd break; } // second number system digit + 5 symbol manufacter code string lines = ""; for (int i = 0; i < 6; i++) { bool oddParity = leftSideParity[i]; if (oddParity) { switch (symbols[i + 1]) { case '0': lines += "0001101"; break; case '1': lines += "0011001"; break; case '2': lines += "0010011"; break; case '3': lines += "0111101"; break; case '4': lines += "0100011"; break; case '5': lines += "0110001"; break; case '6': lines += "0101111"; break; case '7': lines += "0111011"; break; case '8': lines += "0110111"; break; case '9': lines += "0001011"; break; } } // Even parity else { switch (symbols[i + 1]) { case '0': lines += "0100111"; break; case '1': lines += "0110011"; break; case '2': lines += "0011011"; break; case '3': lines += "0100001"; break; case '4': lines += "0011101"; break; case '5': lines += "0111001"; break; case '6': lines += "0000101"; break; case '7': lines += "0010001"; break; case '8': lines += "0001001"; break; case '9': lines += "0010111"; break; } } } // Paint human readable left-side 6 symbol code g.DrawString(barCode.Substring(1, 6), font, new SolidBrush(Color.Black), x, drawBounds.Y + drawBounds.Height - 12); char[] xxx = lines.ToCharArray(); for (int i = 0; i < xxx.Length; i++) { if (xxx[i] == '1') { g.DrawLine(new Pen(Color.Black, lineWidth), x, drawBounds.Y, x, drawBounds.Y + drawBounds.Height - 12); } else { g.DrawLine(new Pen(Color.White, lineWidth), x, drawBounds.Y, x, drawBounds.Y + drawBounds.Height - 12); } x += lineWidth; } // Paint center 'guard bars', always same '01010' g.DrawLine(new Pen(Color.White, lineWidth), x, drawBounds.Y, x, drawBounds.Y + drawBounds.Height); x += lineWidth; g.DrawLine(new Pen(Color.Black, lineWidth), x, drawBounds.Y, x, drawBounds.Y + drawBounds.Height); x += lineWidth; g.DrawLine(new Pen(Color.White, lineWidth), x, drawBounds.Y, x, drawBounds.Y + drawBounds.Height); x += lineWidth; g.DrawLine(new Pen(Color.Black, lineWidth), x, drawBounds.Y, x, drawBounds.Y + drawBounds.Height); x += lineWidth; g.DrawLine(new Pen(Color.White, lineWidth), x, drawBounds.Y, x, drawBounds.Y + drawBounds.Height); x += lineWidth; // 5 symbol product code + 1 symbol parity lines = ""; for (int i = 7; i < 13; i++) { switch (symbols[i]) { case '0': lines += "1110010"; break; case '1': lines += "1100110"; break; case '2': lines += "1101100"; break; case '3': lines += "1000010"; break; case '4': lines += "1011100"; break; case '5': lines += "1001110"; break; case '6': lines += "1010000"; break; case '7': lines += "1000100"; break; case '8': lines += "1001000"; break; case '9': lines += "1110100"; break; } } // Paint human readable left-side 6 symbol code g.DrawString(barCode.Substring(7, 6), font, new SolidBrush(Color.Black), x, drawBounds.Y + drawBounds.Height - 12); xxx = lines.ToCharArray(); for (int i = 0; i < xxx.Length; i++) { if (xxx[i] == '1') { g.DrawLine(new Pen(Color.Black, lineWidth), x, drawBounds.Y, x, drawBounds.Y + drawBounds.Height - 12); } else { g.DrawLine(new Pen(Color.White, lineWidth), x, drawBounds.Y, x, drawBounds.Y + drawBounds.Height - 12); } x += lineWidth; } // Paint right 'guard bars', always same '101' g.DrawLine(new Pen(Color.Black, lineWidth), x, drawBounds.Y, x, drawBounds.Y + drawBounds.Height); x += lineWidth; g.DrawLine(new Pen(Color.White, lineWidth), x, drawBounds.Y, x, drawBounds.Y + drawBounds.Height); x += lineWidth; g.DrawLine(new Pen(Color.Black, lineWidth), x, drawBounds.Y, x, drawBounds.Y + drawBounds.Height); } private static string getENA13Code(string Numbers12bit) { int c1 = 0; int c2 = 0; for (int i = 0; i < 11; i = i + 2) { c1 += int.Parse(Numbers12bit[i].ToString()); c2 += int.Parse(Numbers12bit[i + 1].ToString()); } int c3 = c1 + c2 * 3; c3 = c3 - c3 / 10 * 10; if (c3 == 0) { return Numbers12bit + 0; } else { int N = 10 - c3; return Numbers12bit + N; } }