Added Email Address Validation But It Only Check The Email Address Format?

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, how to verify it and return an error?


Email Validation - Create Program - Asks The User Type His/her Email Address Into A Textbox

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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Validation Domain And Email Address For Sending Email?

Feb 11, 2012

how to validation Domain and Email Address for sending email in visual basic 2010 i used Code Below


But Get Return is a valid EmailID How is Valid The Domain is Not Valid Then..?

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Email Address Validation With RegEx?

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


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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Form Validation - Correctly Formatted Email Address?

May 5, 2011

I have a txt box that askes a user to enter his email address and I want to make sure the user enters a correctly formatted email.

The code I have so far is like this
If txtEmail.Text = "" Then
txtEmail.BackColor = Color.Pink
MessageBox.Show("Please Enter your Email")
Exit Sub
txtEmail.BackColor = Color.White
End If

How I can modify this code to make it work and is regular expressions the same for all programming languages? Also for my mobile number text box I only want a user to enter a 10 digit number with only integer numbers.

The code I have so far is
If txtNumber.Text = "" Then
txtNumber.BackColor = Color.Pink
MessageBox.Show("Please Enter your Mobile")
Exit Sub
txtNumber.BackColor = Color.White
End If

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Regex Email Address Validation Fails If Underscore Character Present

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+)*." & _

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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Mar 2, 2010

I would like to see program in Visual basic of how to validate existence of eMail address

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Aug 7, 2009

is there any way to check if an email is active without sending it an email? (meaning that it does not get returned) if i have 20,000 emails in my email list, and i do decide to send all of them an email, how can automatically cross out the email address that got returned?

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Send Outlook Email With User Interface For Email Address?

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
New SmtpClient()


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Create A Command Button That Launches An Email From Outlook Attaching The Current Word Document To A Set Email Address?

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. 

View 3 Replies View Related - Check That Email Address Is Valid For System.Net.Mail.MailAddress?

Aug 11, 2011

Currently, to avoid errors from being thrown up due to invalid email addresses, I do the following:

Dim mailAddress As MailAddress
mailAddress = New MailAddress("")
Catch ex As Exception
'Invalid email
End Try

However, rather than depending on Try..Catch, is there a way of validating that the email address will be 100% valid for the MailAddress type?I know there a plenty of regex functions out there for validating emails, but I'm looking for the function which the MailAddress type uses to validate its addresses.

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Email Address Extractor - Display Email Addresses

Apr 11, 2011

im using 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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Email Recipients Cannot Send The Sender Email Address?

Dec 1, 2009

i can send email through 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


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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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VS 2008 - Send More Than One Email To Myself My Email Address Keeps Repeating Itself In The "To" Box

Dec 22, 2009

i'm using the following code to send an email:


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:


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Adding A Name With Email Address?

Mar 24, 2010

i have my program all working, but i need to pass an additional piece of information and noticed that when you are in the debug mode and you expand the email address there is a DisplayName when you break down User and Host in the To field

Example Code

emailAddress = ""
Name = "Joe Someone"

View 2 Replies View Related - Get Email Address From Outlook?

Feb 7, 2012

I am trying to output the email address of the current user through an Outlook addon. I haven't been able to get any other examples to work. The closest I have come is:


which outputs:

Smith, John

but I want:

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May 27, 2010

I am working on a web form that instead of having the user enter their email address, I would like to be able to retrieve that information and assign it to a variable. So everything remains transparent. So basically what I am asking is. Whether or not has a class that allows you to get the users email.

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Apr 19, 2010

I have a form (Form A) which collects data from other forms.Form A is a certificate, how do I with a button click email this form (Form A - certificate), there is a text box with a email address already generated, how can this form be sent to that email address?

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Feb 13, 2011

I am using the following function to parse url's from a text file, however it also collects emails.How do I change it so it ignores email address's?[code]...

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Feb 4, 2012

How can I validate an email address? in Visual Basic 2010

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Jun 18, 2012

I have the following function which works fine to validate the email address - however, if I have an apostrophe before the @ e.g., [url]

It gives the error message "This email address is not valid"

Code below


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Oct 24, 2011

I have a form that successfully captures data, but I want to limit the the amount of entries by a user based on their email address. I am using SQL Server and VB.NET and would like to be able to check against the database, and if your email addess is in the system, popp up a message that says, "Sorry, you have already entered the system with that email address".

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May 12, 2011

I'm adding an email facility to my VS2008 (VB) project. I have the form and most of the code in place but am unsure about adding the detail to the textboxes. My data will come from an Sql datatable via a Stored Procedure. What I would like to do is use the autocomplete property of the recipients textbox so as to show the Display Name and the Email Address as is done in Outlook. Like John Smith <jsmith@*****>

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Apr 20, 2010

How to get email address collector in

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Jun 22, 2010

I have a 2008 form that sends and email along with an attachment.

I want to offer up a list of available email address to choose so my user doesn't make a typo.

Problem is the email addresses are not part of any GAL / group because they are from outside the company. However if my user begins to type the email address such as xyz outlook begins to make suggestions such as [email][/email]; [email][/email] because my user has either sent them an email in the past or recieved one. Or if the user types a name outlook will suggest. Jon Doe Jon D. Doe

My question, where does outlook keep this list and how can I retreive it using vb. I know how to get the Global Address book and the other contacts but I need the list of emails that are not associated with any groups but are in outlook.

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Mar 14, 2009

Any code that sends "MaskedTextBox1" and "MaskedTextBox2" to my email adress when clicking on "Button1"?

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Apr 7, 2010

I decided to have a go with Visual Studio 2010 using the VB language. Basically, aI have a windows form which shows a datagridview. The datagridview is filtered when the user selects a combo box. I then want the user to be able to e-mail the datagrid to a e-mail address. I've had a good look around the internet and found a way of sending the datagrid by HTML format. This has a few problems though - it doesn't look quite right (the columns aren't broken up by any lines) and the information isn't filtered (it sends everything that is stored it the datagrid).

Here is my code so far.
Dim oApp As Outlook._Application
oApp = New Outlook.Application
Dim oMsg As Outlook.MailItem
oMsg = oApp.CreateItem(Outlook.OlItemType.olMailItem)
[Code] .....

Here is what the form looks like when filtered.
Here is what the e-mail looks like.
So my question is, how do I get a filtered datagrid e-mailed?

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Set Email To Address To Addresses In Sql Table?

Oct 20, 2010

I have a simple email.aspx page that has From:, To:, Subject:, and Body: text boxes. The send button is set to send the email using smtp through System.Net.Mail in ASP.NET 4. 

What I'm really trying to do is set the To: address to automatically retrieve all of the email addresses stored in my SQL database table that my customers entered when they registered for updates from my websites, rather than me type each one in by hand. I am wanting it completely automated without any user interaction.

I have looked everywhere for weeks to try to get help and I can't seem to find anything describing what I am trying to do.

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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
Dim ma As New MailAddress(email)


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Validate Email Address On An Event In .net?

Jun 12, 2011

validate e-mail address on an event in

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.net - Send Form Information To Email Address?

Dec 23, 2011

how can i send the content of any form to specify email address on submit button. For example if anyone fill the contact form the on submission all the form data will be send to particular email address which we can specify in coding.

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Aug 4, 2009

i need an address book by which one can mailto its selected criterias in with source code

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Determine Current User's Email Address ?

Sep 25, 2008

Is there a 'simple' way to determine the current user's email address ? I want to automatically send an email when an application detects an unhandled exception, but would like it to come from the current user.I found this on the net and haven't yet worked out what its doing (although it seems to work). Unfortunately, as I'm not sure how it works, I also don't know what drawbacks there are to this technique.[code]...

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Jan 12, 2012

I have a word file that i need to read all emails from and create an email list.

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The Specified String Is Not In The Form Required For An Email Address?

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()


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Validate A Textbox For The EMAIL Address Of A Person?

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 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 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:


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Validate Email Address On Exchange Server?

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 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 = ""
Dim SentFrom As String = ""
Dim MessageBody As String = "blah blah blah"


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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Validating An Email Address Field 2005?

Oct 9, 2009

Im trying to make a email client, iv got it all working but im looking to validate the email address field to make sure that its actually an email address so it has a @ sign.Also one other thing is, when the client authenticates with gmail id like to catch the error if its not authenticating properly. Is there a way to do this?

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