C# 为什么不在asp.net webform中使用子页面Jquery代码
当我设计一个webform并在jquery中编码，以便在没有母版页的情况下从文件上传预览图像时，它可以正常工作。但是当我添加母版页时，Jquery就不起作用了。那么如何防止这个问题呢？我的密码在下面 /母版页/C# 为什么不在asp.net webform中使用子页面Jquery代码,c#,C#,当我设计一个webform并在jquery中编码，以便在没有母版页的情况下从文件上传预览图像时，它可以正常工作。但是当我添加母版页时，Jquery就不起作用了。那么如何防止这个问题呢？我的密码在下面 /母版页/ --%> /网络表单/ 调试器； 函数showimagepreview（输入）{ if（input.files&&input.files[0]）{ var filerdr=new FileRea
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调试器；
函数showimagepreview（输入）{
if（input.files&&input.files[0]）{
var filerdr=new FileReader（）；
filerdr.onload=函数（e）{
$（'EmpImage'）.attr（'src'，e.target.result）；
}
filerdr.readAsDataURL（input.files[0]）；
}
}
<%@ Master Language="C#" AutoEventWireup="true" CodeBehind="HomeMaster.master.cs" Inherits="CRMAPP.HomeMaster" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title></title>
<%--<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css" />--%>
<script src="../js/jquery-1.11.0.js" type="text/javascript"></script>
<link href="../css/bootstrap.min.css" rel="stylesheet"/>
<link href="../css/eLife-style.css" rel="stylesheet"/>
<!-- Custom CSS -->
<link href="../css/sb-admin.css" rel="stylesheet" />
<!-- Custom Fonts -->
<link href="../css/font-awesome-4.2.0/css/font-awesome.min.css" rel="stylesheet" type="text/css" />
<!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/libs/html5shiv/3.7.0/html5shiv.js"></script>
<script src="https://oss.maxcdn.com/libs/respond.js/1.4.2/respond.min.js"></script>
<![endif]-->
<asp:ContentPlaceHolder ID="head" runat="server">
</asp:ContentPlaceHolder>
<style>.side-bar { width:225px;background-color:#454243} .content { margin-left:225px;}.side-nav{height:3000px}</style>
</head>
<body>
<form id="form1" runat="server">
<div class="main" >
<div class="side-bar">
<div class="navbar navbar-inverse navbar-fixed-top color" role="navigation">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-ex1-collapse">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="../Admin/DashBoard.aspx">CRM Cable</a>
</div>
<!-- Top Menu Items -->
<ul class="nav navbar-right top-nav">
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown"><i class="fa fa-user"></i> Test <b class="caret"></b></a>
<ul class="dropdown-menu">
<li>
<a href="../Admin/ChangePassword.aspx"><i class="fa fa-fw fa-user"></i> Profile</a>
</li>
<li>
<asp:LinkButton ID="linkLogout" Font-Underline="false" onclick="linkLogout_Click" runat="server"><i class="fa fa-fw fa-power-off"></i>Log Out</asp:LinkButton>
<%--<a href="../LoginPage.aspx"><i class="fa fa-fw fa-power-off"></i> Log Out</a>--%>
</li>
</ul>
</li>
</ul>
<!-- Sidebar Menu Items - These collapse to the responsive navigation menu on small screens -->
<div class="collapse navbar-collapse navbar-ex1-collapse">
<ul class="nav navbar-nav side-nav">
<li>
<a href="../Admin/DashBoard.aspx" ><i class="fa fa-fw fa-dashboard"></i> Dashboard</a>
</li>
<li>
<a href="javascript:;" class="stuff" ><i class="fa fa-fw fa-bookmark-o"></i> Customer Stuff <i class="fa fa-fw fa-caret-down right"></i></a>
<ul id="stuff" class="hide1">
<li>
<a href="../Admin/RegCust.aspx">Customer Registration</a>
</li>
<li>
<a href="../Admin/CustomerSearch.aspx">Customer Search</a>
</li>
</ul>
</li>
<li>
<a href="javascript:;" class="complaints"><i class="fa fa-fw fa-exclamation-circle"></i> Complaints <i class="fa fa-fw fa-caret-down right"></i></a>
<ul id="complaints" class="hide1">
<li>
<a href="../Admin/ComplaintReg.aspx">Complaint Registration</a>
</li>
<li>
<a href="../Admin/ComplaintSearch.aspx">Complaint Search</a>
</li>
</ul>
</li>
<li>
<a href="javascript:;" class="accounts"><i class="fa fa-fw fa-list"></i> Accounts <i class="fa fa-fw fa-caret-down right"></i></a>
<ul id="accounts" class="hide1">
<li>
<a href="../Admin/RecievePayment.aspx">Payment Receive </a>
</li>
<li>
<a href="../Admin/PaymentSearch.aspx">Payment Search </a>
</li>
</ul>
</li>
<li>
<a href="../Admin/CustomSMS.aspx"><i class="fa fa-fw fa-envelope-o"></i> Custom SMS</a>
</li>
<li >
<a href="../Admin/UploadData.aspx"><i class="fa fa-fw fa-upload"></i> Upload Data</a>
</li>
<li>
<a href="../Admin/help.aspx"><i class="fa fa-fw fa-question-circle"></i> Help</a>
</li>
</ul>
</div>
<!-- /.navbar-collapse -->
</div>
</div>
</div>
<div class="content">
<td><asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">
</asp:ContentPlaceHolder></td>
</tr>
</table>
</div>
</form>
</body>
</html>
<%@ Page Language="C#" MasterPageFile="~/Admin/HomeMaster.Master" AutoEventWireup="true" CodeBehind="Employe_Register.aspx.cs" Inherits="CRM_Employe.Employee.Employe_Register" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">
<script type="text/javascript">
debugger;
function showimagepreview(input) {
if (input.files && input.files[0]) {
var filerdr = new FileReader();
filerdr.onload = function (e) {
$('#EmpImage').attr('src', e.target.result);
}
filerdr.readAsDataURL(input.files[0]);
}
}
</script>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
<asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">
</asp:ToolkitScriptManager>
<asp:UpdatePanel ID="empUpPanel" runat="server"><ContentTemplate>
<table align="center" style="width: 60%;">
<tr>
<td class="style2">
<asp:FileUpload ID="EmpfileUpload" runat="server" onchange="showimagepreview(this)" />
<%--<input type="file" name="filUpload" id="filUpload" onchange="showimagepreview(this)" />--%>
<br />
<asp:Image ID="EmpImage" runat="server" alt="uploaded image preview" />
<%--<img id="imgprvw" alt="uploaded image preview"/>--%></td>
<td class="style1">
</td>
<td>
<br />
<asp:Button ID="btnSubmit" runat="server" Text="SUBMIT" />
<asp:Button ID="btnCancel" runat="server" Text="CANCEL" /></td>
</tr>
</table>
</div>
</ContentTemplate></asp:UpdatePanel>
</asp:Content>