我有一個非常簡單的頁面上的按鈕。它接受一個文件,當你按下提交按鈕時,它會加載一個文件。沒有編碼,因爲它表示當試圖編寫按鈕的事件處理程序時,該按鈕在當前上下文中不存在。ASP.NET按鈕在當前上下文中不存在
代碼背後:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
public partial class mass_upload : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
btnSubmitMass.ServerClick += new EventHandler(btnSubmitMass_Click);
}
protected void btnSubmitMass_Click(object sender, EventArgs e)
{
}
}
網頁:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="mass-upload.aspx.cs" Inherits="mass_upload" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Submissions</title>
<link href="/favicon.png" rel="icon">
<link href="css/uikit.min.css" rel="stylesheet">
<link href="css/uikit.css" rel="stylesheet">
<link href="css/styles.css" rel="stylesheet" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js"></script>
<link href="https://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/themes/smoothness/jquery-ui.css" rel="stylesheet">
<script src="https://use.fontawesome.com/50bcaa1a6b.js"></script>
<script src="js/uikit.min.js"></script>
<script src="js/uikit.js"></script>
<script src="js/uikit-icons.min.js"></script>
</head>
<body runat="server">
<div class="uk-section uk-section-xsmall" style="background-color: #820024; margin:0px;">
<div class="uk-container uk-container-large">
<div uk-grid="">
<div class="uk-width-1-2">
<a href="index.aspx"><img src="images/image.png"></a>
</div>
<div class="uk-width-1-2">
<div class="uk-float-right">
</div>
</div>
</div>
</div>
</div>
<nav class="uk-navbar-container" style="background-color: rgba(138,121,103,1); color: #ffffff;" uk-navbar="mode: click">
<div class="uk-navbar-center">
<ul class="uk-navbar-nav uk-text-primary" style="color: #ffffff;">
<li class="uk-active">
<a href="index.aspx">Home</a>
</li>
<li>
<a href="manual-upload.aspx">Manual Submit</a>
</li>
<li>
<a href="mass-upload.aspx">Mass Submit</a>
</li>
</ul>
</div>
</nav>
<div class="uk-section uk-margin-remove-bottom uk-padding-remove-bottom">
<div class="uk-container">
<div class="uk-grid">
<div class="uk-text-center uk-width-1-1">
Click in the field below, browse to the file to be uploaded and click "Open". Once the file name is visible in the form field, click the Submit button.
</div>
</div>
</div>
</div>
<div class="uk-section" runat="server">
<div class="uk-container uk-container-large uk-margin uk-margin-left uk-margin-right uk-padding" style="border:1px solid #cccccc;" runat="server">
<form id="form1" runat="server">
<fieldset class="uk-fieldset" runat="server">
<!-- ****************************************************** -->
<div class="uk-grid-small [email protected] uk-text-center" uk-grid>
<div>
<div class="uk-margin" uk-margin>
<div uk-form-custom="target: true">
<input type="file">
<input class="uk-input uk-form-width-medium" disabled placeholder="Select file" type="text">
</div>
<input type="button" id="btnSubmitMass" runat="server" value="Submit" class="uk-button uk-button-default" />
</div>
</div>
</div>
<!-- ****************************************************** -->
</fieldset>
</form>
</div>
</div>
<div class="uk-grid" style="margin-bottom:15px;">
<div class="uk-text-center uk-width-1-1">
Copyright ©
</div>
</div>
</body>
</html>
嘗試刪除它,然後再次將其添加到aspx頁面。有時,當您複製/粘貼代碼時,Visual Studio有時會變得有點困惑。 – VDWWD
我已經完成了這項工作,我刪除了該頁面並重新創建了該頁面,但仍然存在相同的錯誤。 – Caveman42
奇怪。我已經複製了所有代碼,我的VS找到了按鈕... – VDWWD