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}$"
Dim emailAddressMatch As Match = Regex.Match(emailAddress, regExPattern)
I have been using a function to validate email addresses for awhile now. Yesterday i discovered that the code indicates that 2 different email addresses are invalid when in reality they are perfectly fine.
The code uses RegEx to determine if an email address is valid. I have tried to understand RegEx, but I can never seem to figure it out. Here is the
Private Sub btnCheckEmail_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCheckEmail.Click If ValidateEmailAddress(txtEmail.Text) = True Then
[Code]....
How can the RegEx be re-written to allow the local part (before the @ symbol) to be 1 character, and/or be a number? I understand the "a-z" part, but i don't understand what [w.-] means, or why the a-z is duplicated before the @ symbol.
My Regex works, except if the email address entered has an underscore character (_) in it.
Because of my lack of experience with regular expressions, I'm not sure where in my pattern I'm supposed to add the offending character to allow it:
Dim pattern As String = "^[-a-zAZ0-9][-.a-zA-Z0-9]*@[-.a-zA-Z0-0]+(.[-.a-zA-Z0-0+)*." & _ "(com|edu|info|gov|int|mil|net|org|biz|name|museum|coop|aero|pro|tv|[a-zA-Z]{2})$"
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...
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)
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?
How I can make this condition en VB.NET If e.KeyCode = [a-zA-Z0-9] Then End if I have understood that the Keycode are numbers but as I can do this validation with regex?
I need to set validation on a textbox where the user types in their email address... This is not a required field though so I want to allow the form to be submitted if the textbox contains the default text ("Email address").I've posted the code i have already to ensure a valid email address is typed.
<asp:RegularExpressionValidator CssClass="errorpopup" Display="Dynamic" ID="regexpEmail" ValidationGroup="mySubmit" runat="server" ErrorMessage="<strong>Please enter a valid email address.</strong>" ControlToValidate="tbEmail" ValidationExpression="w+([-+.']w+)*@w+([-.]w+)*.w+([-.]w+)*" SetFocusOnError="true" />
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?
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
i wanna check if it's a hotmail email something like this : test@hotmail.com which hotmail.com is the domain i use this RegularExpressions to check if it's valid
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
I have the following text that I am trying to parse: "user1@emailaddy1.com" <user1@emailaddy1.com>, "Jane Doe" <jane.doe@ addyB.org>, "joe@company.net" <joe@company.net>
I am using the following code to try and split up the string: Dim groups As GroupCollection Dim matches As MatchCollection Dim regexp1 As New Regex("""(.*)"" <(.*)>") matches = regexp1 .Matches(toNode.InnerText) For Each match As Match In matches groups = match.Groups message.CompanyName = groups(1).Value message.CompanyEmail = groups(2).Value Next
But this regular expression is greedy and is grabbing the entire string up to the last quote after "joe@company.net". I'm having a hard time putting together an expression that will group this string into the two groups I'm looking for: Name (in the quotes) and E-Mail (in the angle brackets).
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?
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:
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?
I am having an issue where I am using regex.Replace to replace part of a string. The basic idea is that I want to capture the beginning of the string then replace the end of the string with a value from code. For an example pretend I have a string that says "Test Number " followed by number and I want to increment that number. I capture the "Test Number " but when I try to concatenate that capture with the new number it treats the capture ($1) as a literal and replaces the entire string with $1[new number].
[code]...
This will output "We are on Test Number 2", as expected. how I can use a variable in the replacement string portion of the Regex.Replace when including a captured group?
I'm creating a program in VB.NET to output multiple images. Some images will have the same file name. If there is multiple files with the same name I want to add "_1_" to the end of the file name. If the "_1_" file already exists I want to increment the 1 to be "_2_". If this file already exists I want to continue incrementing the number ultil it doesn't exist. So for example "filename", filename_1_", "filename_2_", etc. Here is the code that I have tried
I've been working straight since yesterday trying to get this to work. I'm a noob to RegEx and I've tested out about 5 different RegEx "builders" but each of them require you to navigate through the options to build the Regex...each of them has failed when I try to use them.Is there an application out there free/paid where you select the line you want to grab and the RegEx is auto generated from that highlight rather than having to try to build the line of code? [code]
I am sending an email with an attachment using the following Code
Dim msg As New System.Net.Mail.MailMessage(req.EmailFrom, req.EmailTo) Dim att As New System.Net.Mail.Attachment("C:Documents and SettingsmichaelrDesktop1216259.pdf") With msg .Attachments.Add(att)
[code]....
The file size of the attachment is 396KB, upon the recipient receiving the email outlook shows the file size as 543Kb. Strange thing is if I send an email with the same attachment using outlook the file size is 396Kb.I understand that file sizes can increase due to the attachment being base 64 encoded as opposed to just raw binary.What I am failing to see is why outlook send a file which is 396KB in size but in code when sending it, the same file is 543Kb.
how would i implement a way that i would not hard code the email message that the application send to email recipients? how will i also include email message formatting (text in bold, italic, etc.)?
I'm trying to get my program to send very simple text email messages. I did do a search beforehand, and found that I was having the same issue as someone else, but the specific question I have was not answered --
I've learned that if you're trying to send mail, you need an SMTP server... I found this list here but every one of them I've tried yields the same "Failure sending mail" error.
Here's my
Dim mail As New MailMessage()
mail.From = New MailAddress("me@mycompany.com") mail.To.Add("destination-email@whatever.com")
[CODE]...
Is the problem that I need to show "credentials" (i.e. user/pass)? If so, what would those credentials be? Can I use my yahoo email SMTP server with my login info to do it? And is this all I'd need to add to add the credentials?
smtp.Credentials = New NetworkCredential("MyUsername", "MyPassword") (before the smtp.Send, of course)
I'm using the Chilkat add-on to read email from a pop3 server. I can download the headers fine but the headers all download into one column.How can I get my email to put the headers in the appropriate columns?
'Display the From email address and the subject. ListView2.Items.Add(email.From) ListView2.Refresh() ListView2.Items.Add(email.EmailDate) ListView2.Refresh()
[Code]...
What I am trying to do is to download the "From" person into the "From" columns and the "Date" of the email into the date column, so on and so forth but I'm not able to get them to go into their separate columns.
I am buidling an application that users can use to submit text data and attachments to email recipients. Certain fields, quite a few in fact from the textboxes in the app will be in the email body, and some in the subject line.This is how I am doing it right now, but I figured there has to be a better way. In VB it is one single line of code, not many like it is here. Ideally I would like to be able to better control the positioning in the message body.
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
I am creating an application in ASP.Net 2.0, the user can choose the service that he want and submit the request after choosing the form and filling the needed details the user should click on the submit button, then two emails should be sent; a confirmation email to the user him/herself and a notification email to his/her direct manager to get the approval on the requested ticket.How can I send the emails using VB language?
