input type='file'上传控件假样式

采用bootstrap框架样式

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title></title>
    <script src="../../theme/pc_global.js"></script>
    <script src="../../theme/js/layer/layer.js" type="text/javascript"></script>
    <style>
        .container .form-group { margin-top: 5px; }
    </style>
</head>
<body>
    <form id="form1" runat="server" enctype="multipart/form-data">
        <%-- class="form-inline"--%>
        <div class="container">
            <div class="form-group">
                <label class="control-label">第一步:下载Excel模板到本地;</label>
                <button type="button" class="btn btn-default" onclick="DownModule()">下载模板</button>
            </div>
            <div class="form-group">
                <label class="control-label">第二步:按照Excel模板中格式要求编辑学生分数;</label>
            </div>
            <div class="form-group">
                <label class="control-label" style="float: left;">第三步:从本地选择已保存的Excel文件;</label>
                <input type="file" style="float: left; display: none;" id="inputfile" runat="server" />
                <div class="input-group" style="float: left;  40%; margin-top: -5px;">
                    <span class="input-group-btn">
                        <button type="button" class="btn btn-default" onclick="$('#inputfile').click();">选择文件</button>
                    </span>
                    <input id="txt_inputfile" type="text" class="form-control" readonly="true" />
                </div>
            </div>
            <div style="clear: left; margin-bottom: 15px;"></div>
            <div class="form-group">
                <label class="control-label" style="float: left;">第四步:点击导入上传文件到系统。</label>
                <button type="button" style="float: left; margin-top: -5px;" class="btn btn-default" runat="server" onserverclick="btn_Click" onclick="CheckFile();">导入</button>
                <label id="lbl_error" style="float: left;" class="control-label text-danger" runat="server"></label>
            </div>
            <div style="clear: left;"></div>
            <div id="div_error" class="table-responsive" style="display: none;" runat="server">
                <table class="table table-hover table-bordered">
                    <caption>以下数据导入失败</caption>
                    <thead>
                        <tr>
                            <th>学号</th>
                            <th>姓名</th>
                            <th>分数</th>
                            <th>错误原因</th>
                        </tr>
                    </thead>
                    <tbody id="tbody_trs" runat="server">
                    </tbody>
                </table>
            </div>
        </div>
        <asp:HiddenField ID="HFTClassID" runat="server" />
        <asp:HiddenField ID="HidCustomScoreID" runat="server" />
    </form>
    <script type="text/javascript">
        var FrameIndex = parent.layer.getFrameIndex(window.name); //获取窗口索引
        //关闭页面
        function ClosePage() {
            parent.layer.close(FrameIndex);
        }
    </script>
    <script type="text/javascript">
        //导入
        function ExportScoreCustom() {
            var tclassid = $("#HFTClassID").val();
            var customscoreid = $("#HidCustomScoreID").val();
            $.ajax({
                //提交数据的类型 POST GET
                type: "POST",
                //提交的网址
                url: "../ScoreAction.ashx",
                //提交的数据
                data: { "action": "exportscorecustom", "tclassid": tclassid, "customscoreid": customscoreid },
                //返回数据的格式
                datatype: "json",//"xml", "html", "script", "json", "jsonp", "text".
                //在请求之前调用的函数
                beforeSend: function () { },
                //成功返回之后调用的函数             
                success: function (datajson) {
                    if (datajson != null && typeof (datajson) == "string" && datajson.length > 0) { try { datajson = JSON.parse(datajson); } catch (e) { datajson = eval("(" + datajson + ")"); } }
                    window.parent.LoadList();
                    if (datajson.msg < 0) {//导入临时表失败
                        layer.msg(datajson.msgbox);
                        $("#div_label label").text(datajson.msgbox);
                        $("#div_error").hide();
                    } else {
                        $("#div_label label").text("");
                        $("#div_error").show();
                        $("#div_error table tbody").empty();
                        $(datajson.jsonstr).each(function (index, Row) {
                            $("#div_error table tbody").append(MyTrHtml(Row));
                        });
                    }
                },
                //调用执行后调用的函数
                complete: function (XMLHttpRequest, textStatus) { },
                //调用出错执行的函数
                error: function () { }
            });

        }

        function MyTrHtml(Row) {
            var errormsg = $("#div_tr_model").html();
            errormsg = errormsg.replace(/{IDNO}/g, Row.IDNO)
                .replace(/{UserName}/g, Row.UserName)
                .replace(/{Score}/g, Row.Score)
                .replace(/{ErrorReason}/g, Row.ErrorReason);
            return errormsg;
        }
        //下载模板
        function DownModule() {
            parent.window.open("http://" + window.location.host + "/_Score/自定义成绩模板.xls");
        }
        //点击导入
        function CheckFile() {
            if ($("#inputfile").val() == "") {
                $("#txt_inputfile").val("未选择任何文件");
                return false;
            } else {
                return true;
            }
        }
        //上传文件-确定
        $('#inputfile').change(function () {
            var str = $(this).val();
            var arr = str.split('\');//注split可以用字符或字符串分割 
            var my = arr[arr.length - 1];//这就是要取得的图片名称 
            $("#txt_inputfile").val(my);
        })
    </script>
</body>
</html>

原文地址:https://www.cnblogs.com/zhyue93/p/fileupload.html