C# winform打印总结 z

第一点： 

const uint GENERIC_READ =0x80000000;
        const uint GENERIC_WRITE = 0x40000000;     
        const int OPEN_EXISTING = 3;
        private FileStream fs=null;
        IntPtr iHandle;
        [DllImport("kernel32.dll")]
        public static extern IntPtr CreateFileA(string lpFileName, uint dwDesiredAccess, int dwShareMode, int lpSecurityAttributes, int dwCreationDisposition, int dwFlagsAndAttributes, int hTemplateFile);

        [DllImport("kernel32.dll")]
        private static extern bool WriteFile(
        int hFile,
        byte[] lpBuffer,
        int nNumberOfBytesToWrite,
        ref   int lpNumberOfBytesWritten,
        ref   int i
        );

        [DllImport("kernel32.dll")]
        private static extern bool CloseHandle(IntPtr hObject);

第二点：

 protected void imageButton1_Click(object sender, ImageClickEventArgs e)
        {
          
            ShopCart mycart = CartCtroller.GetCart();         
           iHandle = CreateFileA("LPT1", GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, 0, 0);
           if (iHandle.ToInt32() == -1)
           {
               Jscript.AjaxRunJs(this.Page, "alert(‘没有连接打印机或者打印机端口不是LPT1！‘)");
               return;
           }
           else
           {             
               fs = new FileStream(iHandle, FileAccess.ReadWrite);
             
               //for (int i = 0; i < 5; i++)
               //{
               //    fs.WriteByte(0x0A); //走纸(忘记了可能是这个)
               //}
               //StreamReader sr = new StreamReader(fs);   //读数据;  
               //StreamWriter sw = new StreamWriter(fs, System.Text.Encoding.Default);  //些数据;  
            
               if (mycart.Count == 0)
               {
                   Jscript.AjaxRunJs(this.Page, "alert(‘请先购买产品！‘)");
                   return;
               }   

               byte[] buf = new byte[500];
               char ESC = (char)(27);
               char GS = (char)(29);                                                                                                                 
               char LF = (char)(10);
           

     //读出数据
               StringBuilder SEND = new StringBuilder();
               //SEND.Append(LF.ToString());    
               char c1 = (char)60;
               char c2 = (char)0;
               SEND.Append(GS.ToString() + "L" + c1.ToString() + c2.ToString());
               SEND.Append(ESC + "D" + Convert.ToChar(25) + Convert.ToChar(30) + Convert.ToChar(0));
               string dt = DateTime.Now.ToString();
               string mingcheng = "产品名称:";
               string miaoshu = "产品描述:";
               string shuliang = "购买数量:";
               string zhi = "支";
               SEND.Append(LF.ToString());   
               SEND.Append("欢 迎 光 临 - 上海金福");
               SEND.Append("\r\n");
               SEND.Append("-------------------------------");
               SEND.Append(LF.ToString());
               SEND.Append("购买时间："+dt);
               SEND.Append("\r\n");
               SEND.Append("-------------------------------");
               SEND.Append(LF.ToString());
               SEND.Append(LF.ToString());
               for (int i = 0; i < mycart.Count; i++)
               {
                   modelArrayProduct temp = (modelArrayProduct)mycart[i];                
                   SEND.Append(mingcheng + temp.T_name);
                   SEND.Append("\r\n");
                   SEND.Append(miaoshu +   temp.T_miaoshu);
                   SEND.Append("\r\n");  
                   SEND.Append(shuliang + temp.T_shuliang.ToString() + zhi);
                   SEND.Append("\r\n");  
                   SEND.Append("-------------------------------");
                   SEND.Append(LF.ToString());                   
               }            

               //走纸
               SEND.Append(LF.ToString());
               SEND.Append(LF.ToString());             
               SEND.Append(LF.ToString());
               SEND.Append(LF.ToString());
               SEND.Append(GS + "V" + Convert.ToChar(1));
             
                //字符类型转换
               Encoding utf8 = Encoding.GetEncoding(65001);
               Encoding gb2312 = Encoding.GetEncoding("gb2312");//Encoding.Default ,936
               byte[] tempa = utf8.GetBytes(SEND.ToString());

               buf = Encoding.Convert(utf8, gb2312, tempa);
                                       
              fs.Write(buf, 0, buf.Length);
                          fs.Close();                       
           }
                 CloseHandle(iHandle);     

        }

C#执行批处理命令