【发布时间】：2016-03-18 11:16:24
【问题描述】：
当用户在 Web 表单中上传文档时，我正在尝试将一些 JavaScript 变量值从 .aspx 文件传递到 .ashx 文件。 Web 表单是一个 .aspx 文件，上传功能在 .ashx 文件中。所以我需要将 .aspx 文件中的变量传递给 .ashx 文件。
我能够传递三个变量，但是当我尝试传递第四个变量时，它就不起作用了。它不会给出任何错误，只是不传递任何变量。当我调试代码时，我可以看到调试器没有进入上传过程。而且上传按钮也变了
这是我的 .aspx 页面代码。
<%@ Page Title="" Language="VB" MasterPageFile="~/_resx/E4.master" AutoEventWireup="true" CodeFile="new.aspx.vb" Inherits="E4_Jobs_new" ValidateRequest="false" %>
<asp:Content ID="Content1" ContentPlaceHolderID="MainContent" runat="Server">
<script type="text/javascript">
var id = '<%= ModeID%>', mode = '<%= Mode%>', employer = '<%= Employer.Name %>', jtitle = document.getElementById(<%= txtTitle.ClientID%>);
</script>
<asp:RequiredFieldValidator runat="server" ControlToValidate="txtTitle" Display="None" ErrorMessage="xx" ValidationGroup="NewJob" EnableViewState="False" />
<div class="form-element">
<input type="text" id="txtTitle" runat="server" maxlength="64" /></div>
<div class="m-accor-body">
<ul id="attachmentList">
<% For Each additionalDoc As DataRow In Vacancy.Attachemnts.Rows%>
<li id="da<%= additionalDoc.Item("id") %>">
<span><%= additionalDoc.Item("name") %></span>
<span class="rd" data-did="<%= additionalDoc.Item("id")%>"> remove</span>
</li>
<%Next%>
</ul>
<div id="queue"></div>
<input id="file_upload" name="file_upload" type="file">
</div>
</asp:Content>
这是我将变量传递到 .ashx 文件的 .aspx 文件中的代码
$(function () {
dimNav('vacancy');
$('#file_upload').uploadify({
'buttonClass': 'button2',
'buttonText': 'Select a PDF or DOCX file to upload..',
'width': 250,
'fileTypeExts': '*.pdf; *.doc; *.docx',
'formData': {
'draftId': id,
'type': mode,
'employer': employer,
'jtitle': jtitle
},
'uploadLimit': 6,
'swf': '/_resx/uploadify.swf',
'uploader': '/e4/jobs/upload-job-attachments.ashx',
'onUploadSuccess': function (file, data, response) {
$('#attachmentList').append('<li id="da' + data + '"><span>' + file.name + '</span><span class="rd" data-did="' + data + '"> remove</span></li>');
}
});
});
前三个变量的值与第四个不同。在第四个中，我使用 javascript 函数来获取值（因为它是用户给出的输入值。不是已经存储在数据库中的值。）。
这是我在 upload-job-attachments.ashx 文件中检索值的代码
Public Class upload_job_attachments : Implements IHttpHandler
Public Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequest
context.Response.ContentType = "text/plain"
context.Response.Expires = -1
Try
Dim Id As Integer = CInt(context.Request("draftid"))
Dim type As String = CStr(context.Request("type"))
Dim empname As String = CStr(context.Request("employer"))
Dim postedFile As HttpPostedFile = context.Request.Files("Filedata")
********** other lines of code ***********
End Sub
End Class
我能做些什么来克服这个问题。我在高级 javascript 功能方面很薄弱。感谢您的帮助
加法
整个脚本看起来像
$(function () {
dimNav('vacancy');
var jobTitle = $('#' + '<%= txtTitle.ClientID%>').val();
$('#file_upload').uploadify({
'buttonClass': 'button2',
'buttonText': 'Select a PDF or DOCX file to upload..',
'width': 250,
'fileTypeExts': '*.pdf; *.doc; *.docx',
'formData': {
'draftId': id,
'type': mode,
'employer': employer,
'jtitle': jobTitle
},
'uploadLimit': 6,
'swf': '/_resx/uploadify.swf',
'uploader': '/e4/jobs/upload-job-attachments.ashx',
'onUploadSuccess': function (file, data, response) {
$('#attachmentList').append('<li id="da' + data + '"><span>' + file.name + '</span><span class="rd" data-did="' + data + '"> remove</span></li>');
alert($('#' + '<%= txtTitle.ClientID%>').val());
}
});
$('body').on('click', '.rd', function () {
var el = $(this);
$.post('delete-job-attachment.ashx?id=' + el.attr('data-did'), '{}', function () {
$('#da' + el.attr('data-did')).remove();
});
});
$('.price-button').click(function () { $(this).next('.price-list').fadeToggle('slow'); });
$('.m-lists table tr:nth-child(4) td:nth-child(1)').prepend('<div>Multiple job posting</div>');
$('.jMedias').change(function () {
suffleMedias();
});
var suffleMedias = function () {
var mids = [];
$('.jMedias:checked').each(function () {
mids.push($(this).val());
});
$('.mediaLists').val(mids.toString());
};
$('.jType').change(function () {
suffleJobType();
});
$('input:radio.p-option-radio').change(function () {
var pOption = $(this).val();
$('.p-option').val(pOption);
});
var suffleJobType = function () {
var type = $('.jType').val();
if (type == 0) {
$('#contractLength, #jobHour').slideUp();
} else if (type == 1) {
$('#jobHour').slideDown();
$('#contractLength').slideUp();
} else if (type == 2) {
$('#jobHour').slideDown();
$('#contractLength').slideUp();
} else if (type == 3) {
$('#contractLength, #jobHour').slideDown();
}
};
var suffleFeeType = function () {
var fType = $('.feeType').val();
if (fType == 0) {
$('#salaryRateMax, #salaryRateMin, #agencyFee').slideDown();
} else if (fType == 1) {
if (parseFloat($('.referrerPercentage option:selected').text()) > 0) {
} else {
$('#salaryRateMax, #salaryRateMin').slideUp();
}
$('#agencyFee').slideDown();
} else if (fType == 2) {
$('#agencyFee').slideUp();
if (parseFloat($('.referrerPercentage option:selected').text()) > 0) {
} else {
$('#salaryRateMax, #salaryRateMin').slideUp();
}
}
};
$('.feeType').change(function () {
suffleFeeType();
});
$('.referrerPercentage').change(function () {
if (parseFloat($('.referrerPercentage option:selected').text()) > 0) {
$('#salaryRateMax, #salaryRateMin').slideDown();
} else {
if ($('.feeType').val() == 1) {
$('#salaryRateMax, #salaryRateMin').slideUp();
}
}
});
$('.calcFee').change(function () {
CalculateAndDisplayFees();
});
$('.rAgency').chosen().change(function () {
if ($(this).val() != '-1') {
$('.psls').val('-1').trigger("liszt:updated");
$('.retained').val('1');
}
});
$('.psls').chosen().change(function () {
if ($(this).val() != '-1') {
$('.rAgency').val('-1').trigger("liszt:updated");
$('.retained').val('0');
}
});
var setPublishOption = function () {
var p = $('.p-option').val();
var $radios = $('input:radio.p-option-radio');
$radios.filter('[value=' + p + ']').attr('checked', true);
};
suffleJobType();
suffleFeeType();
suffleMedias();
CalculateAndDisplayFees();
setPublishOption();
});
【问题讨论】：
标签： javascript jquery asp.net vb.net ashx