C#打印小票（连续自动打印）
#自动打印小票
方法一（后端生产打印代码）
注意前端需要引用（LodopFuncs.js,JsBarcode.all.min.js,jquery.js）当然还有安装打印机驱动还有Lodop的驱动
前端代码调用打印方法部分
json.printinfo是后端传向前端的生成好的打印代码。
//执行打印小票
var orderids = "";
if (json.printinfo != "")
{
var imgsrc = "\"../../../Content/img/wjywx.jpg\"";
function print() {
if (needCLodop()) { loadCLodop(); }
window.On_CLodop_Opened = function () {
eval(atou(json.printinfo)); //OpenPreview()是调用打印方法
window.On_CLodop_Opened = null;
};
if ("undefined" != typeof CLodopMessage) {
layer.msg(CLodopMessage, {
time: 20000, //20s后自动关闭
btn: ['前往下载'],
id: 'layerDemo',
yes: function () {
window.open('../../Upload/驱动/CLodop_Setup_for_Win32NT.exe')
}
});
}
//打印小票完成根据订单id去修改订单在数据库中的状态
if (orderids != "") {
$.ajax({
type: 'POST',
url: "../Home/UpdateOrderStatic?Orderid=" + orderids,
data: "",
dataType: 'json',
async: false,
cache: false,
success: function (json) {
if (json.responseText == "True") {
alert("打印完成")
} else {
alert("修改订单状态失败")
}
}
})
}
}
print();
}
打印小票用到的实体
/// 打印小票的方法
M_Order_Info实体是订单相关信息。根据自己需求而定
/// 生成打印小票的前端代码
/// 
+ per.WxImg + " />');";
html += "LODOP.SET_PRINT_STYLEA(0, 'Stretch', 2);";
html += " LODOP.ADD_PRINT_TEXT('" + (topmagin += 70) + "mm', 5, 183, 100, '" + per.Message + "');";
html += " LODOP.SET_PRINT_STYLEA(0, 'FontSize', 8);";
html += " LODOP.SET_PRINT_STYLEA(0, 'Alignment', 1);";
LODOP.PRINT();
//html += "}";
//html += " tprint()";
magin=topmagin;
return html;
}
方法二、打印页面
//这个路径就是要打印的页面
var url = '被打印网页路径';
var LODOP;
LODOP = getLodop();
LODOP.PRINT_INIT('');
var ele = document.createElement("img");
JsBarcode(ele, thisorderid, {
displayValue: true,
fontSize: 10, height: 50, margin: 0, width: 1
});
var srcdata = ele.src;
srcdata = srcdata.replace(/\+/g, "%2B");
srcdata = srcdata.replace(/\&/g, "%26");
//生成订单二维码,临时保存到缓存内
$.ajax({
type: 'POST',
url: '@Url.Content("../orders/export/saveimgdata")',
data: { orderid: thisorderid, imgdata: encodeURI(srcdata) },
dataType: 'text',
async: false,
cache: false,
success: function (text) {
},
error: function (e) { }
});
var playerOrder = $("#player10")[0];
if (playerOrder != undefined && playerOrder.paused) /*如果已经暂停*/ {
playerOrder.play(); /*播放*/
}
//截取新订单id
LODOP.ADD_PRINT_URL(0, 0, "100%", "100%", "" + url + "?orderIds=" + thisorderid + "&IsAutoPrint=1");
LODOP.PRINT();