如何实现“自动保存"?或“保存草稿"； ASP.NET中的功能? [英] How to implement an "Auto Save" or "Save Draft" feature in ASP.NET?
问题描述
我在ASP.NET 2.0中有一个注册表.我想通过单击提交"按钮来保存我的注册表单字段，或者应该每五秒钟保存一次.
I have a registration form in ASP.NET 2.0. I want to save my registration form fields either by clicking on submit button or they should be saved every five seconds.
例如，我在注册页面上有三个字段:
For example I have three fields in my registration page:
UIDPWDName
用户已输入UID和PWD，并且在输入Name时应保存以前的值，而不会中断用户输入
The user has entered UID and PWD and whilst he is entering Name the previous values should be saved without interruption of user inputs
我将如何在ASP.NET中做到这一点?
How would I do this in ASP.NET?
推荐答案
您可以使用Javascript& jQuery的.具有由计时器触发的功能，该功能定期读取要保存的表单数据并将其发布回SaveDraft.aspx页面.在此页面中，将数据保留在某处(例如数据库).
You could do this with a snippet of Javascript & jQuery. Have a function that's fired by a timer that periodically reads the form data you want to save and posts it back to a SaveDraft.aspx page. In this page persists the data somewhere (such as a database).
如果用户注销或会话丢失，则可以查询此数据，并在该数据存在的情况下预先填充表格.
If the user logs out or their session is lost you can query for this data and pre-populate the form if the data exists.
在数据输入ASPX页面上:
On your data entry ASPX page:
// Usual ASP.NET page directives go here
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<script type="text/javascript" src="Scripts/jquery-1.4.1.min.js" ></script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:textbox id="username" runat="server" /><br />
<asp:textbox id="password" runat="server" /><br />
<asp:textbox id="realName" runat="server" /><br />
<asp:button id="Submit" onclick="Submit_Click"
usesubmitbehavior="true" runat="server" />
</div>
</form>
<script type="text/javascript">
$(document).ready(function () {
// Configure to save every 5 seconds
window.setInterval(saveDraft, 5000);
});
// The magic happens here...
function saveDraft() {
$.ajax({
type: "POST",
url: "SaveDraft.aspx",
data: ({
username: $("#<%=username.ClientID %>").val(),
password: $("#<%=password.ClientID %>").val(),
realName: $("#<%=realName.ClientID %>").val()
}),
success: function (response) {
alert('saved draft');
}
});
}
</script>
</body>
</html>
在您的SaveDraft.aspx页面中:
public partial class SaveDraft : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string username = Request.Form["username"];
string password = Request.Form["password"];
string realName = Request.Form["realName"];
// Save data somewhere at this point
}
}
那应该让您入门.
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