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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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 aaabbb01010@gmail.com, how to verify it and return an error?

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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

[code]...

But Get Return abc123@xsd.com is a valid EmailID How is Valid The Domain is Not Valid Then..?

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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
As
New SmtpClient()

[Code]....

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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

[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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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
Else
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
Else
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+)*." & _
"(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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Apr 12, 2012

I copied someone elses code and then changed it to suit my program.. however even when a valid email is entered is still says invalid email entry

Private Sub EmailTextBox_Validating(ByVal sender As System.Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles EmailTextBox.Validating
Dim temp As String

[code].....

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[Code]...

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Mar 26, 2010

I want to validate email in text box through key press event.my code is as follows

[Code]....

it is not working, provide solutions....

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Imports System.Net
Imports System.Net.Mail
Public Class Form1
Sub sendMail()
Try
Dim AnEmailMessage As New MailMessage

[Code]...

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

[Code]...

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[Code]...

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Here's my

Dim mail As New MailMessage()

mail.From = New MailAddress("me@mycompany.com")
mail.To.Add("destination-email@whatever.com")

[CODE]...

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I have a win form with three textboxes that lets the user input information using VB.net 2008. I am wanting the program to send me the information entered (when they hit the send button) as an email and also drop the information entered into an access database.I have the program sending the textbox information as an email.What I am having trouble with is saving the three textboxes to access database. I have an access database set up with a table and three fields for the three textboxes.

All I need to do is each time a user uses the program, it adds the information they enter into the three textboxes to the three different fields in the database. I don't need to let the user view or edit the database in any way.

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how to validate an emailid

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Email Validation With Regex?

Apr 17, 2012

I've tried implementing a rather simple email validation function that seems return a false match even though the input is a valid email. I have searched for any issues with the existing regex but it seems to be correct.Even though the match returns a false value the program is stepping to the next validation level (which it shouldn't).Here is the email validation function.

Function EmailAddressChecker(ByVal emailAddress As String) As Boolean
Dim regExPattern As String = "^[A-Z0-9._%+-]+@[A-Z0-9.-]+.[A-Z]{2,4}$"
Dim emailAddressMatch As Match = Regex.Match(emailAddress, regExPattern)

[code].....

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