1 IPAddress ip = IPAddress.Parse("192.168.1.212");
2 IPEndPoint iport = new IPEndPoint(ip, 9100);//9100为小票打印机指定端口
3 Socket soc = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
4 soc.Connect(iport);
5 bitmap = new Bitmap(@"D:300X200.bmp");
6 soc.Send(bmpToByte(bitmap));
7 soc.Close();
1 public static byte[] bmpToByte(Bitmap bmp)
2 {
3 int h = bmp.Height / 24 + 1;
4 int w = bmp.Width;
5 byte[][] all = new byte[2 + 2 * h + h * w][];
6
7 all[0] = new byte[] { 0x1B, 0x33, 0x00 };
8
9 Color pixelColor;
10 // ESC * m nL nH 点阵图
11 byte[] escBmp = new byte[] { 0x1B, 0x2A, 0x21, (byte)(w % 256), (byte)(w / 256) };
12
13 // 每行进行打印
14 for (int i = 0; i < h; i++)
15 {
16 all[i * (w + 2) + 1] = escBmp;
17 for (int j = 0; j < w; j++)
18 {
19 byte[] data = new byte[] { 0x00, 0x00, 0x00 };
20 for (int k = 0; k < 24; k++)
21 {
22 if (((i * 24) + k) < bmp.Height)
23 {
24 pixelColor = bmp.GetPixel(j, (i * 24) + k);
25 if (pixelColor.R == 0)
26 {
27 data[k / 8] += (byte)(128 >> (k % 8));
28 }
29 }
30 }
31 all[i * (w + 2) + j + 2] = data;
32 }
33 //换行
34 all[(i + 1) * (w + 2)] = PrinterCmdUtils.nextLine(1);
35 }
36 all[h * (w + 2) + 1] = PrinterCmdUtils.nextLine(2);
37
38 return byteMerger(all);
39 }
1 public static byte[] byteMerger(byte[][] byteList)
2 {
3 int Length = 0;
4 for (int i = 0; i < byteList.Length; i++)
5 {
6 Length += byteList[i].Length;
7 }
8 byte[] result = new byte[Length];
9
10 int index = 0;
11 for (int i = 0; i < byteList.Length; i++)
12 {
13 byte[] nowByte = byteList[i];
14 for (int k = 0; k < byteList[i].Length; k++)
15 {
16 result[index] = nowByte[k];
17 index++;
18 }
19 }
20 return result;
21 }
转自：http://www.cnblogs.com/rinack/p/4838963.html