如何在用户选择文件后立即开始上传文件，但仅在用户单击按钮时保存。 [英] How to start uploading file as soon as user selects the file but save only when user clicks button.

问题描述

我有几个FileUpload控件，我目前正在按钮点击保存数据库中的文件。场景是我想在用户选择文件时开始传输文件..但只有当用户点击保存按钮时才将它们保存在数据库中。我已经google了很多，但在这种情况下找不到任何东西..我确实找到了如何在没有按钮点击的情况下保存文件的教程，但这不是我想要的，因为我只想在按钮上保存它但是我想要启动选择文件后立即转移（就像Gmail一样）。

目前我使用的是借助javascript进行自定义文件控制.. 
 <   span     class   =  FileUpload >  
 <   input     type   =  file    size   =  24    id   =  BrowserHidden    runat   =  server    onchange   =  getElementById（'FileField'）。value = getElementById（'BrowserHidden'）。value;    /  >  
 < ;   span     class  < span class =code-keyword> =  BrowserVisible < span class =code-keyword>>  <   input    类型  =  text    id   =  FileField    runat   = 服务器    /  >  <   / span  >  
 <   / span  >  

解决方案

检查这个。如果它不能解决您的问题，请回复。

I have a few FileUpload controls , i am currently saving the files in database on Button click. The scenario is that i want to start transferring file the moment user selects a file.. but save them on database only when user clicks on the save button. I have googled a lot but could not find anything on such scenario.. I did find tutorials on how to save files without button click but that is not what i want because i want to save it only on Button Click BUT i want to start the transfer as soon as file is selected (just like Gmail).

Currently i am using a custom file control made with the help of javascript..
<span class="FileUpload">
    <input type="file" size="24" id="BrowserHidden" runat="server" onchange="getElementById('FileField').value = getElementById('BrowserHidden').value;" />
    <span class="BrowserVisible"><input type="text" id="FileField" runat="server" /></span>
    </span>

解决方案

Check this. And reply if it wont solve your problem.

这篇关于如何在用户选择文件后立即开始上传文件，但仅在用户单击按钮时保存。的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！