EMail Textbox Validation Not Working
Mar 26, 2010I 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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Email Validation - Create Program - Asks The User Type His/her Email Address Into A Textbox
Feb 9, 2009I 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)
Textbox Email Validation?
Apr 12, 2012I 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].....
Zip Code Masked Textbox Validation Is Not Working
Mar 21, 2010I have a function i'm using to validate some textboxes. However, the zip code masked textbox validation is not working. Zip code cannot be missing any of the first five digits (the last four digits are always optional). Here is the code that is not working. [code] Also, I have a menu item which when clicked will pop up a font dialog box. When i select a font, it is supposed to changed the font of every control on the form. However, it is not working. [code]
View 1 RepliesValidation Domain And Email Address For Sending Email?
Feb 11, 2012how 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..?
Added Email Address Validation But It Only Check The Email Address Format?
Feb 9, 2011In 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?
View 2 RepliesValidation Of An Email Id
Jan 15, 2012how to validate an emailid
View 1 RepliesEmail Validation With Regex?
Apr 17, 2012I'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].....
Email Address Validation With RegEx?
Mar 7, 2012I 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.
VS 2005 Hotmail Email Validation?
Apr 5, 2009i 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
[code]...
EMAIL Validation In Desktop Application Vb 2008
Jun 29, 2009email validation for textbox in vb 2008
View 2 RepliesForm Validation - Correctly Formatted Email Address?
May 5, 2011I 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
Regex Email Address Validation Fails If Underscore Character Present
Aug 31, 2010My 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...
TextBox Validation - 16 Numeric Digits Entered Into The Masked Textbox
Nov 18, 2009I am trying to mkae sure that there has been 16 numeric digits entered into the masked textbox. If not show errror message and if so to call the fucnction ValidateLuhn. When calling Validate Luhn i want the program to tell me if the number entered is valid or invalid using the code in the function:
Private Function ValidateLuhn(ByVal value As String) As Boolean
Dim CheckSum As Integer = 0
Dim DoubleFlag As Boolean = (value.Length Mod 2 = 0)
[CODE]...
Email App - Send An Email Of Text From A Textbox
Mar 28, 2009make an app for me that just sends an email of text from a textbox. if u have a source to one or anything like that because i have tried over and over and it just doesnt work
View 4 RepliesTextbox Validation In .net?
Dec 8, 2011I had used this code to validate email id in textbox,but it is not working properly?
Dim Expression As New System.Text.RegularExpressions.Regex("^[a-zA-Z][w.-]*[a-zA-Z0-9]@[a-zA-Z0-9][w.-]*[a-zA-Z0-9].[a-zA-Z][a-zA-Z.]*[a-zA-Z]$")
If Expression.IsMatch(Textbox1.Text) Then
MsgBox("The email address is valid.")
Else
[code]....
Textbox Validation In VB?
Apr 3, 2011I have a textbox which has some text on it and when the user will click on it,The problem is, as there is already a text on the textbox when the user will click will diappear to type his respective text, the program is saving the text written also. How to prevent that? All I want is to prevent the program saving a blank textbox and the text written on it?
View 4 RepliesForms :: TextBox Validation?
Mar 16, 2010My question is the last code tag section above where the parameters are set for the input.If on the form there is a textbox that is required (on the db side to not allow nulls) how would you perform the validation before you tried to execute the update sql?Ex: say 'SerialNumberTextbox.Text' was empty or if you needed to have character constraints on what was typed like varchar(15) and they have 16 or more characters
View 7 RepliesMultiple Validation In .net Textbox?
Feb 1, 2012The problem i am having is after checking if the field is blank i want program to stop at that, right now it is going ahead and checking the username password also even though the field is blank and printing wrong username password. i am really new at this so please excuse the lack of knowledge
[Code]...
Validation For Blank Textbox : How To Do It
Jul 3, 2009read code below as soon as user lefts field blank he should get the mesage thats what i am creating but ofcorse this code creates a bug and i get that message once for first textbox then for second and this process continues till i stop the project app gets stucked between thease two textboxes?
Private
Sub fname_LostFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles fname.LostFocus
If fname.Text = "" Then
[code]....
Validation On A TextBox In Silverlight End-to-end?
Sep 29, 2009I'm trying to add Validation to a Silverlight 3.0 TextBox but cannot seem to find and example which is complete, and not missing functionality that makes it work, I have this property[code]...
View 2 RepliesEmail Code Not Working For My 2 Computers?
Jun 11, 2012[code]OK here is the problem, it does not send the email on any of my 2 computers. No firewall, No Anti Virus. I don't know if there is an error in this or what? All the other code works fine, except for this emailing part.
View 4 RepliesPhp - Check If Email Address Is Working?
Aug 7, 2009is 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?
View 7 RepliesBasic Validation Of Data In A Textbox?
Feb 17, 2012I have to use basic methods to validate the data that's entered is acceptable. The chapter we are on only gets into checking if a value is =, >, < etc etc, but I want to check if a letter was entered where a number was expected, so I ended up
with this:
'Store user values
If Not IsNumeric(inputLoanAmount.Text) OrElse CDbl(inputLoanAmount.Text) < 0 _
OrElse Not Integer.TryParse(inputLoanTerm.Text, loanTerm) _[code]....
Forms :: Validation Improvments(for Textbox)?
Mar 20, 2009on my form i have 2 text boxes. One email the other password. Her eis my code
Private Sub btnLog_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLog.Click
If String.IsNullOrEmpty(txtMail.Text) Then
'txtMail is empty
MessageBox.Show("Email is empty", "Error", MessageBoxButtons.OK, _
MessageBoxIcon.Error, MessageBoxDefaultButton.Button1)
[Code]...
How can i make this more efficient. So that txtMail checks for text first then @ then more text then .com or something? i,m sure you know what i mean.and textpassword is more then 2 or three chars?
Masked Textbox Date Validation ?
Dec 15, 2011How to enter the date in the masked text box and how to validate it
View 2 RepliesMasked Textbox Validation Of Phonenumber?
Jan 13, 2009OK, so i was going to verify a MaskedTextBox on whether the number input was or was not 10 digits in length. If not 10 digits, obviously they didn't put in a full phone number.
The problem is, even though you have no digits the length is still 10 so you can't check if the user put in 10 digits or not and return an error? Anyone got any ideas on testing for a phone number?I've seen tons of examples on date verification, but none on phone number verification.
Putting Textbox Validation In Function
Aug 1, 2010Is there any possibility that I can put this large chunk of code to a function so that I can call and verify the input without having to repeat the code for every textbox.keyPress event.
Here it is:
Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
With e
If IsNumeric(.KeyChar) Or .KeyChar = "[" Or .KeyChar = "]" Or .KeyChar = ";" Or .KeyChar = ":" _
[Code] .....
Sql - VB ADO.NET Textbox Input Validation Against MSSQL DB
Jun 22, 2011I have one textbox basically the user is going to enter in a 9 digit number or letters. From there I want to have a buttonclick event that validates this against 2 columns in a MSSQL Database. First to check if the number exists, next to check if it is active or inactive.
There are about 27000 rows of numbers so my main question is what is the best approach to handling something like this.
Should I create a view and validate in the click event. Should I create a stored procedure in sql that takes an input parameter and call it in the click event.
I was also reading about storing the information in a dataset however with that many records i am assuming that is going to be a slow process.
Textbox Validation For Two Decimal Places?
Mar 2, 2010I need to amend the code below to cater for only two Decimal places. Anyone know how i can do this?
[Code]....
