VS 2008 - Using RegEx String To Validate Email Address?
Feb 11, 2010
I am using this regex string in one of my programs to validate email adresses: "^[a-z0-9._%+-]+@[a-z0-9.-]+.[a-z]{2,4}$". This works well for the most part, but I just found out that it doesn't catch an address like this ... "john.doe.@yahoo.com" ... where there's a "." right before the "@", which is invalid, so my program tries to send it & throws an exception. How to modify my regex string to catch this situation?
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Oct 21, 2010
i have tried various ways to accomplish this, but to no avail. I don't know how to generate the replacement text (mailto link) so I just used a bunch of x's until I can figure it out. Here is what I have (which currently not replacing emails in string): Here is my Code behind:
[Code]...
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Nov 25, 2010
I'm having some problems with validating Urls and IP addresses with RegEx.
This regular expression doesn't work properly. For example, it returns True for "www.123.123.123.123" and "http://www.123.123.123.123".
vb.net
Regex.IsMatch(txtTextBox.Text, "(((http|https)://)|(www.))+(([a-zA-Z0-9._-]+.[a-zA-Z]{2,6})|([0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}))")
[Code]....
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Feb 4, 2012
How can I validate an email address? in Visual Basic 2010
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Dec 31, 2011
I have a simple textbox with an email address.
I need to know the best and easiest way to find out whether that email address is valid or not. I want to know how I can do that.
I have tried using the below code but it does not display any message for me? Can anyone point the mistake I am making?
Public Function IsValidEmailAddress(ByVal email As String) As Boolean
Try
Dim ma As New MailAddress(email)
[Code].....
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Jun 12, 2011
validate e-mail address on an event in vb.net?
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Jun 12, 2011
I was wondering how i would be able to validate a textbox for the E-MAIL address of a person. For example it cant have anything like "`#[]-=+->~| etc. it MUST have an @ and a .com or .co.uk at the end of the e-mail. anyway i was wondering how i would be able to program this when the user types into the textbox they cant put in any of the other symbols?and IF there is a missing @ or .com then the user should receive an error message telling them to make sure that they put them in.how would i program that on a button?
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Aug 25, 2009
I want a function to test that a string is formatted like an email address. What comes built-in with the .NET framework to do this? This works:
[Code]...
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Nov 9, 2010
I'm allowing users to manage a distribution list stored in a database. Users are only allowed to enter emails that are @mydomain.com. A web based application then takes the distribution list and sends emails. I'd like to validate that the email is valid before sending an email from the application.
To send an email I'm using this code:
Dim SendTo As String = "ThisIsNotARealEmailAddress@mydomain.com"
Dim SentFrom As String = "me@mydomain.com"
Dim MessageBody As String = "blah blah blah"
[Code]....
Is there anyway to validate the email when the email address is added to the database, instead of a try catch block when sending the email?
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Aug 15, 2011
Imports System.Net
Imports System.Net.Mail
Public Class Form1
Sub sendMail()
Try
Dim AnEmailMessage As New MailMessage
[Code]...
I use this code to send an email through gmail account but the thing I want to do is, I want to check whether the given email and password exists or not and if it exists then pop out a text box with the body of the mail and type the text and then send it as a mail. But in the above code you have to log in and type body and when you send the mail , It verifies for the email and password while sending and if anything goes wrong says there is no such gmail account.but i want to check it whether the email and password exists or not, when the user enters the email and password at the beginning itself.So that he enters the right email to log on to compose a mail.Is there any way to check whether the given email and password is correct at the beginning only ?
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Mar 7, 2012
I have been using a function to validate email addresses for awhile now. Yesterday i discovered that the code indicates that 2 different email addresses are invalid when in reality they are perfectly fine.
The code uses RegEx to determine if an email address is valid. I have tried to understand RegEx, but I can never seem to figure it out. Here is the
Private Sub btnCheckEmail_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCheckEmail.Click
If ValidateEmailAddress(txtEmail.Text) = True Then
[Code]....
How can the RegEx be re-written to allow the local part (before the @ symbol) to be 1 character, and/or be a number? I understand the "a-z" part, but i don't understand what [w.-] means, or why the a-z is duplicated before the @ symbol.
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Dec 21, 2009
I'm making a multiple email sender, and whenever I try and send it. I get this error.
Exception Text System.FormatException: The specified string is not in the form required for an e-mail address. at System.Net.Mime.MailBnfHelper.ReadMailAddress(String data, Int32& offset, String& displayName)at System.Net.Mail.MailAddress.ParseValue(String address)
at System.Net.Mail.MailAddress..ctor(String address, String displayName, Encoding displayNameEncoding)at System.Net.Mail.MailAddress..ctor(String address)
[Code]...
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Jul 19, 2011
I am using this expression to validate e-mail addresses:
"^[_a-z0-9-]+(.[a-z0-9-]+)@[a-z0-9-]+(.[a-z0-9-]+)*(.[a-z]{2,4})$"
I noticed that in order for the e-mail address to validate, I need to put in at least 3 characters before the @ symbol. Is this a requirement? What if I just want to have an e-mail address with 1 or 2 characters before the @ symbol?
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Aug 31, 2010
My Regex works, except if the email address entered has an underscore character (_) in it.
Because of my lack of experience with regular expressions, I'm not sure where in my pattern I'm supposed to add the offending character to allow it:
Dim pattern As String = "^[-a-zAZ0-9][-.a-zA-Z0-9]*@[-.a-zA-Z0-0]+(.[-.a-zA-Z0-0+)*." & _
"(com|edu|info|gov|int|mil|net|org|biz|name|museum|coop|aero|pro|tv|[a-zA-Z]{2})$"
He said he fixed it by adding the _ after the numeric check.
I see the A-Z0-9, but I'm not sure which is the numeric check...
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Feb 9, 2011
In member register page, I added email address validation but it only check the email address format, such as .com, .net, .org.If user inputs fake account such as aaabbb01010@gmail.com, how to verify it and return an error?
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Jan 21, 2011
The following is my function. The error occurs when I try and set the from email address. It gives me an error: "The specified string is not in the form required for an e-mail address." But the email address is in a perfectly legitimate format (I changed the email so I don't get killed with web-crawlers pulling addresses, but it is the exact same format). Hope someone can see what I am obviously missing.
Private Function EmailResult(ByVal strFilePath As String, ByVal strClientID As String) As String
Dim CIFunctions As New CISDTSAuto.CISDTSFunctions
Dim strEmailAddresses As String()
[code]....
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Dec 21, 2009
Well I'm making a multiple email sender, and whenever I try and send it. I get this error.
************** Exception Text **************
System.FormatException: The specified string is not in the form required for an e-mail address.
at System.Net.Mime.MailBnfHelper.ReadMailAddress(String data, Int32& offset, String& displayName)
at System.Net.Mail.MailAddress.ParseValue(String address)
[code]....
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Dec 1, 2009
I work for a printshop that screenprints customized hats ,tees and a host of other stuff for a variety of small businesses. Being that we are a small business as well, we can't afford to mass ship catalogs to our clients, so I decided to build a catalog application/business card that can be emailed to them. The app is rep. specific, and after choosing which options suit them best using text fields and combo boxes, upon clicking submit, the customers' info is emailed to the rep.
To do this, I am trying to get a popup window that displays an email form with the 'mailto' address previously set, so it can't be altered and the info from the previous screen to be pasted in the body of the email. Upon clicking the confirm button, the mail is sent and the window is closed. I already have the code to copy the info from the textbox and combobox entries and paste it into the textbox in the next form, but getting the email form to be functional is appearing to be quite a feet.
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Dec 22, 2009
i'm using the following code to send an email:
[Code]...
The problem is if I send more than one email to myself my email address keeps repeating itself in the "To" box. If I send an email to myself 3 times, the 3rd e-mails "To" box will say:
[Code]...
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May 13, 2010
I would like to know if there is any way that you can verify that a email address actually exists like using this tool: [URL]. would like to wirte an application that does this in visual basics.
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Mar 25, 2010
Is there any way to verify if an email address actually exists?
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Jul 15, 2010
A client for our company contains an apostrophe in their email name joe's@joe.com. I was advised that this is the correct and current email for the given client. Below is the Expression string I am using with Regex (which I copied from the internet somewhere) to validate email addresses. How can this expression be modified to allow/accept apostrohe's?
strRegex =
"^([a-zA-Z0-9_-.]+)@(([[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.)|(([a-zA-Z0-9-]+.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(]?)$"
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Jul 21, 2009
I have a column in an excel file which contains a string. I need to loop through each row in the excel file and extract an email address from the string.
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Feb 9, 2009
I have to make a basic program that: Create a program with a simple interface that
1. Asks the user type his/her email address into a textbox.
2. When the user clicks the "Evaluate Email Address" button, one of two message boxes pops up: "That is a valid email address!" with an "Information" icon, or "That is an invalid email address!" and on a second line, "Please retype your email address.", with an "Exclamation" icon
3. To be considered valid, the email address must -include an "@" symbol, and -it must end in either ".com", ".net", or ".org" or ".edu" (I don't know how to check a string and test if its last four characters end with any of these and make it say not valid email address. I think I might have to use a case statement)
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Dec 15, 2011
I wouuld like to open outlook with new email with provided subject line, body message and attachment but no email address. User will enter the email address and click send . How can I do this?
I used following code but it gives me error for to address
Dim SmtpServer
As
New SmtpClient()
[Code]....
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Mar 15, 2012
What I would like to do is create a command button that launches an email from outlook attaching the current word document to a set email address. I'm not fussed if the word document is saved or not as it is only the email receipent that needs it, likewise I don't mind if the code instructs the email to send of just opens it ready to be sent.I have read through loads of forums and tried loads of codes but cannot get any to work.
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Apr 11, 2011
im using vb8.net im struggling to make a program that will display email addresses so in other words if im using ms outlook then by the click of the button the program must go in to the windows registry and then look in the place where the email address is and then read that part and display the address in a text box.
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Dec 1, 2009
i can send email through vb.net behind code but how do i implement so that the recipient cannot see the sender email and only the name?i had done alot of research but i can't find any solution about this problem
[Code]...
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Jan 27, 2011
I am sending an email using VS2010 VB which works fine, except I would like to have the recipient see their name in lieu of their email address upon receiving the email. I've tried different 'To' addresses, ([URL]), but nothing seems to work. It always shows the email address when received.
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Feb 11, 2012
how to validation Domain and Email Address for sending email in visual basic 2010 i used Code Below
[code]...
But Get Return abc123@xsd.com is a valid EmailID How is Valid The Domain is Not Valid Then..?
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