Winform水晶报表USB热敏打印机直接打印，无需预览

  public void Print()
        {
            DataSet ds = new DataSet();

            DataTable table = new DataTable();
            DataColumn dcName = new DataColumn("name", typeof(string));
            DataColumn dcPayMD = new DataColumn("PayMD", typeof(decimal));
            DataColumn dcFillCP = new DataColumn("FillCP", typeof(decimal));
            DataColumn dcReceiveDetailAddress = new DataColumn("ReceiveDetailAddress", typeof(string));
            DataColumn dcImageBillCode = new DataColumn("ImageBillCode", typeof(byte[]));
            table.Columns.AddRange(new DataColumn[] { dcName, dcPayMD, dcFillCP, dcReceiveDetailAddress, dcImageBillCode });

            DataRow row = table.NewRow();
            row["Name"] = "张山";
            row["PayMD"] = 123.2;
            row["FillCP"] = 234.3;
            row["ReceiveDetailAddress"] ="芜湖市";
            row["ImageBillCode"] = get();
            table.Rows.Add(row);

            ds.Tables.Add(table);
            CrystalReport1 c = new CrystalReport1();
            c.Load("CrystalReport1.rpt");
            c.SetDataSource(ds.Tables[0]);        
            //  USB 打印
            c.PrintOptions.PrinterName = "GP-5890";
            c.PrintToPrinter(1, false, 0, 0);

}