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Like every other web developer on the planet, I have an issue with users double clicking the submit button on my forms. My understanding is that the conventional way to handle this issue, is to disable the button immediately after the first click, however when I do this, it doesn't post.
I did do some research on this, god knows there's enough information, but other questions like Disable button on form submission, disabling the button appears to work. The original poster of Disable button after submit appears to have had the same problem as me, but there is no mention on how/if he resolved it.
Here's some code on how to repeat it (tested in IE8 Beta2, but had same problem in IE7)
My aspx code
<%@ Page Language="C#" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!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">
<script language="javascript" type="text/javascript">
function btn_onClick()
{
var chk = document.getElementById("chk");
if(chk.checked)
{
var btn = document.getElementById("btn");
btn.disabled = true;
}
}
</script>
<body>
<form id="form1" runat="server">
<asp:Literal ID="lit" Text="--:--:--" runat="server" />
<br />
<asp:Button ID="btn" Text="Submit" runat="server" />
<br />
<input type="checkbox" id="chk" />Disable button on first click
</form>
</body>
</html>
My cs code
using System;
public partial class _Default : System.Web.UI.Page
{
protected override void OnInit(EventArgs e)
{
base.OnInit(e);
btn.Click += new EventHandler(btn_Click);
btn.OnClientClick = "btn_onClick();";
}
void btn_Click(object sender, EventArgs e)
{
lit.Text = DateTime.Now.ToString("HH:mm:ss");
}
}
Notice that when you click the button, a postback occurs, and the time is updated. But when you check the check box, the next time you click the button, the button is disabled (as expected), but never does the postback.
WHAT THE HECK AM I MISSING HERE???
Thanks in advance.
332
The disabled property was first introduced by Microsoft but has since been adopted as a standard by the W3C. So when the form is submitted - either by clicking on the submit button or pressing Enter in a text input field - the submit button will be disabled to prevent double-clicking.
Open the Control Panel. Click or double-click the Mouse or Mouse Settings icon. In the Mouse Properties window, click the Buttons tab, if not already selected. On the Buttons tab, adjust the slider for the Double-click speed option, then click OK.
There is not an option to remove the Submit Button; however, you can choose to hide it on the Form if you'd like, making the "Form" an informational web page/landing page rather than a page that requires/expects action.
I think you're just missing this tag:
UseSubmitBehavior="false"
Try it like this:
<asp:Button ID="btnUpdate" runat="server" UseSubmitBehavior="false" OnClientClick="if(Page_ClientValidate()) { this.disabled = true; } else {return false;}" Text = "Update" CssClass="button" OnClick="btnUpdate_Click" ValidationGroup="vgNew"/>
Explanation
114
fallen888 is right, your approach doesn't work cross-browser. I use this little snippet to prevent double-click.
41
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