public static bool Print(int orderId, string orderTime) { bool b = true; string cut = ((char)29).ToString() + ((char)86).ToString() + ((char)1).ToString() + ((char)49).ToString();//发送切纸指令 //byte[] byte_cut = System.Text.Encoding.Default.GetBytes(cut); //string font = ((char)1D).ToString() + ((char)21).ToString() + ((char)01).ToString()+ ((char)10).ToString() ;//文字巨细 byte[] fonts = new byte[] { 27, 82, 0 };//1D 21 选择字体 byte[] temp = new byte[] { 29, 33, 17 };//1D 21 选择字体巨细,0x01放大一倍 byte[] bty_tmp = new byte[] { 29, 86, 1, 49 };//切纸 byte[] Internal = System.Text.Encoding.Default.GetBytes(((char)27).ToString() + ((char)64).ToString());//初始化打印机 System.Net.Sockets.TcpClient client = new System.Net.Sockets.TcpClient(); System.Net.Sockets.NetworkStream stream = null; Int32 port = 9100; //string ipPrint = ConfigurationManager.ConnectionStrings["printIP"].ConnectionString;//获取打印机名称 string ipPrint = "192.168.0.77"; //string ipPrint =Common.Comm.readXml("/xml/setting.xml", "printIP");//读取xml的IP try { //client.Connect("192.168.1.77", port); client.Connect(ipPrint, port); stream = client.GetStream(); //是否撑持写入 if (!stream.CanWrite) { b = false; } Byte[] data; //按菜品类型和时间、单号、点菜员、订单点菜备注 分组盘问 string sql_query = "select tname,typeid,dname,uname,d.addtime,d.remark,count(fname)fnum"+ " from "+ " p_orderDetailInfo d,p_orderinfo o, p_deskinfo desk, p_foodinfo f, p_foodType t,users u"+ " where d.orderid=o.id and d.foodid=f.id and o.deskid=desk.id and f.typeid=t.id and u.id=d.userid"+ " and o.id=" + orderId + " and d.addtime=‘" + orderTime + "‘ " + " group by tname,typeid,d.remark,dname,uname,d.addtime "; string sql_detail = ""; DataTable dt = DbSqlHelper.ExecuteDataSet(CommandType.Text, sql_query).Tables[0]; DataTable dt_detail = null; if (dt.Rows.Count > 0) { for (int i = 0; i < dt.Rows.Count; i++) { //当前该订单的菜品信息 sql_detail = "select fname,count(fname) fnum,f.id ,userid,d.remark from "+ "p_orderDetailInfo d,p_foodinfo f "+ "where d.foodid=f.id and TypeID=" + dt.Rows[i]["typeid"] + " and d.addtime=‘" + orderTime + "‘ and orderid=" + orderId + " group by fname,f.id ,userid,d.remark"; dt_detail = DbSqlHelper.ExecuteDataSet(CommandType.Text, sql_detail).Tables[0]; stream.Write(Internal, 0, Internal.Length); stream.Write(fonts, 0, fonts.Length);//设置字体 stream.Write(temp, 0, temp.Length);//设置字体巨细--关键 string outPut = "-" + dt.Rows[i]["tname"] + "-\n" + dt.Rows[i]["dname"] + "\t点菜员 - " + dt.Rows[i]["uname"] + "\n--------------------\n"; for (int j = 0; j < dt_detail.Rows.Count; j++) { outPut += "\n\n"+dt_detail.Rows[j]["fname"] + "\t" + dt_detail.Rows[j]["fnum"]; if (dt_detail.Rows[j]["remark"].ToString() != "") { outPut += " * " + dt_detail.Rows[j]["remark"] + "\n\n";//菜品【口味】备注 } UpdateStatus(orderId.ToString(), dt_detail.Rows[j]["id"].ToString(), orderTime);//改削该打印状态 } outPut += "\n\n" + DateTime.Now + "\n\n\n\n\n\n"; data = data = System.Text.Encoding.Default.GetBytes(outPut); stream.Write(data, 0, data.Length);//输出文字 outPut = ""; // 一个分类打印完成后清空。切纸 //stream.Write(Internal, 0, Internal.Length); // data = System.Text.Encoding.Default.GetBytes(cut); //stream.Write(data, 0, data.Length); stream.Write(bty_tmp, 0, bty_tmp.Length); //bty_tmp = new byte[] { 29, 86, 1, 49 }; } //data = System.Text.Encoding.Default.GetBytes(cut); //stream.Write(bty_tmp, 0, bty_tmp.Length); //stream.Write(bty_tmp, 0, bty_tmp.Length); } //----------------- } catch { //打印机缺纸或者纸匣打开时,不会呈现异常,不用特殊代码判断,数据不会丢掉. b = false; } finally { stream.Close(); stream.Dispose(); client.Close(); } return b; }
2年前的餐饮项目，在一些饭铺已经运行了1年多了。
适用于热敏刀片打印机，，
运用在超市、饭铺 等各类需要小票打印的场合。
打印完后，会自动切纸。
这里有一个排版的问题，对齐不是很严格。