Solved

prevent  multiple form submission

Posted on 2006-06-22
2
204 Views
Last Modified: 2010-04-23
I have a 1 btnSubmit button that sends an email. users do multiple clicks and we receive all emails. How to avoid this? I did a research and tried a few codes but non of them worked.

This is my code for the button:

-------------------------------------------------------

Private Sub btnSubmit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSubmit.Click

        Try
            Dim objMail As New MailMessage
            objMail.From = "email1"
            objMail.To = "email2"
            objMail.Subject = "Form"
            objMail.BodyFormat = MailFormat.Html
         
            objMail.Body = "<!DOCTYPE HTML PUBLIC ""-//W3C//DTD HTML 4.0 Transitional//EN"">" & vbCrLf _
                & "<body>" & vbCrLf _
                 & "</body>" & vbCrLf _
                & "</html>" & vbCrLf

            SmtpMail.SmtpServer = "192.100.00.104"

            SmtpMail.Send(objMail)

        Catch ex As Exception
         
            lblError.Visible = True
            lblError.Text = ex.Message

        End Try

-----------------------------------------------------------------------------------------


thanks,
0
Comment
Question by:ainaks25
2 Comments
 

Author Comment

by:ainaks25
ID: 16963301
I found the solution:

<SCRIPT language=JavaScript > 

var submitcount=0;

function checkSubmit()
{

if (submitcount == 0)
{ submitcount++; return true; }
else
{ alert('This form has already been submitted.' ); return false; }

}

</SCRIPT>       



and

<form id="Form1" name="MainForm" method="post" runat="server" onSubmit=" return checkSubmit();" >


---------------------------
0
 

Accepted Solution

by:
RomMod earned 0 total points
ID: 16997904
Question closed - 125 points refunded.

Best regards,
RomMod
Experts Exchange
Community Support Moderator
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Article by: Kraeven
Introduction Remote Share is a simple remote sharing tool, enabling you to see, add and remove remote or local shares. The application is written in VB.NET targeting the .NET framework 2.0. The source code and the compiled programs have been in…
Calculating holidays and working days is a function that is often needed yet it is not one found within the Framework. This article presents one approach to building a working-day calculator for use in .NET.
Migrating to Microsoft Office 365 is becoming increasingly popular for organizations both large and small. If you have made the leap to Microsoft’s cloud platform, you know that you will need to create a corporate email signature for your Office 365…
Video by: Mark
This lesson goes over how to construct ordered and unordered lists and how to create hyperlinks.

863 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

27 Experts available now in Live!

Get 1:1 Help Now