Well its not very important, but i have 500 emails (yahoo) and i want to make a program that checks if these emails are valid. Basically i want to send newsletters to these emails, but i want to know if the emails are really valid. How can i do that. I know there are some programs i can use, but i want to make my own program.
View 8 RepliesI have bulk email id in database. I need to verify whether email id is existing or not before sending a mail in asp.net.
View 1 RepliesI cant find any good example of vb.net checking if email is valid, as example "something@yahoo.com"
View 4 RepliesCheck Email if gmail and valid password length.
Screenshot:
Public Class Form1
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
[Code].....
This code might be useful for validating email address, and for simple email sender/bomber.
Currently, to avoid errors from being thrown up due to invalid email addresses, I do the following:
Dim mailAddress As MailAddress
Try
mailAddress = New MailAddress("testing@invalid@email.com")
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.
Here is the problem, I have an Access form and a textbox for an e-mail address. The email address is not required, I only want to check for a valid email address when a value or address has been entered into the e-mail filed. Example: If e-mail is not empty or if email field has a value, then check for the follow elements, matched the email address with the required format. If the e-mail field is empty, do not look for anything, move on.
View 1 RepliesI know you can use regex to verify an email address format, but is there a way to, outside of sending an email to the address to verify that an email address is actually a working email address?
View 4 RepliesI 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.
View 6 RepliesI have a form1 that logs in the user to my hotmail/live email sender. In form1 I have 2 textboxes. First ask for email address for live/hotmail and the other ask for the password. Then it takes you to form2 (email sender). My problem is if the user enters a wrong password or email the program still takes them to form2... hence the program wont work if they try to send an email.. Is there a way I can verify if at form1 that the email and password is correct before it moves on the form2?
View 11 RepliesI am writing an Excel addin to read/insert/update/delete SQL data. I am looking for tips or code samples to check if the user running the addin has select/insert/update/delete permissions. this would work on SQL 2000, 2005 and 2008. I have found the following which works for SQL 2005 (and likely 2008, though I have not tested).
Use AdventureWorks
Go
SELECT * FROM fn_my_permissions('Sales.vIndividualCustomer', 'OBJECT');
Go
[code]....
i am using vb, i have a aspx page which contain a textbox (txtStudentName) and a drop box (dropdownlistGroupName) and a save button
student table
StudentID StudentName GroupID
1 ABC 1
[code]....
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?
View 2 Repliesis it possible to check if the customer input his complete name is valid or not?
View 1 RepliesI have a txt file with a few settings that get loaded into the Program. These are put into an array. As the array holds different types (int, string, dates etc) its set to object type.
What i am trying to fingure out is how to check the date is a valid format, by returning a false value so i can have a msgbox pupup and say the date in the file is invalid. I cant use isdate() on the string from the file as even if the date format is correct its a string not a date type so i have to convert it first (which is the point it throws an error).
I need to check if a character is a valid Key (type) in VB.NET (I need to turn "K" into Keys.K, for example). I am currently doing this to convert it:
Keys.Parse(GetType(Keys), key, False)
I have an VB.NET application. This Application is permanently resident in memory and minimized to the tray area because we use it very often. The problem comes in when we VPN into a client's site. These VPN connections trash all other network connections to and from our machines.Then every time my VB.NET application refreshes its database, errors start occurring, because the machine has lost connectivity to the SQL server, however, these are not at the connection level, but only when the reader attempts to read.
I am checking for connection.open, but because of the SQL connection pooling, I just get a previous connection that was valid before the network was cut. Is there anyway to check if an actual SQL connection is valid, prior to re-issuing a connection from the pool?[code]...
After I send a post request to login to a site (using httpwebrequest), how do I check if the login is valid?
One way to do it is to read the whole html using
dim reader as new streamreader(response.getresponsestream) dim str as string = reader.readtoend and then check the html for any unique string (e.g. "log out"), to tell if the login is successful.
But reading the entire html is too long, so how do I shorten the process?
I tried
Dim str as string = response.getresponseheader("Set-Cookie")
But str is a blank string.
I am trying to create a program that visits a site, and checks urls if they return a 404 page.[code]...
View 9 RepliesI am developing client application I store client details with e-mail address. but I give permission to users to entry valid e-mail address of every client, In that case I will check valid e-mail address for that how to check the given valid e-mail address
View 2 RepliesI'm trying to check if the input in the "enterKey" is 1) Numeric input value, 2) Integer input value, 3) Non-negative input value, and 4) Input value less than or equal to the Maximum Score which is 10. When I enter the number 10, my error message pops up.
Here is my
If e.KeyCode = Keys.Enter Then
If (IsNumeric(txtQuizScores.Text)) _
AndAlso (CInt(txtQuizScores.Text) >= 0) _
AndAlso (CInt(txtQuizScores.Text) <= 10) _
AndAlso (CInt(txtQuizScores.Text) Mod 1 <> 0) Then
[Code] .....
Looking for the best way to determine if a URI exists in VB.NET without downloading the actual content. System.IO.FileExists/My.Computer.FileSystem.FileExists can be used locally to determine if a file exists, is there an equivalent for the Web?
Currently I am using a HttpWebRequest to check URI existance using the ResponseStream. This populates the stream if the target does exist and throws an exception if it doesn't. The function is being expanded to also check for PDF files (typically 5MB +), images, etc and it will be a waste of time/bandwidth to actually populate the content into a stream.
In the case of "Success" (the target does exist) I do not wish to download the file or page, simply to end up with a Boolean which indicates the whether something exists at the end of this URI.
does somebody knows how to check for a valid IMEI?I have found a function to check on this page: url...But it returns false for valid IMEI's (f.e. 352972024585360).I can validate them online on this page:url...What is the correct way(in VB.Net) to check if a given IMEI is valid? [code]
View 1 RepliesHow to deal with a "date bug" that I have encountered in my program. Here is a scenario.
1. My system has a locale of en_US and therefore displays the date as MM/DD/YYYY
2. My program tries to import from a csv file in which it carries out tests on a field to check for a valid date before loading the rest of the data.
3. If the date in the file is in the format DD/MM/YYYY the test fails and therefore the data is not loaded. This is the bug.
I would like code to test for the date string in the csv file that will recognize any date format (locale).
I create an empty boolean array check_state(), and then if a condition is met later in the script, I redim it and save a list of check box states as booleans into the array, and later check the array values, but I can't work out how to do this without causing an error if the array was not defined to begin with
View 1 RepliesHow can I know if I input a valid Birthday of a person in vb2005 windows base. If the user input the current date it must put a message that it is not a valid birthday.
View 8 RepliesSee subject of positing for question.
1) I recall seeing a really cool option in VB.NET using LINQ to match using "LIKE%'
2) I know regular expressions will work and I suspect that will result in the shortest code and probably won't be too hard to read for such a simple test.
Here's what I did.
Private Shared Function FileNameIsOk(ByVal fileName As String) As Boolean
For Position As Integer = 0 To fileName.Length - 1
Dim Character As String = fileName.Substring(Position, 1).ToUpper
Dim AsciiCharacter As Integer = Asc(Character)
Select Case True
[Code] .....
i need vb/ASP code to check the Email is expired or not? i.e say shivaprakash_s5@yahoo.com is active email id or it is outdated.
View 1 RepliesRight now, I'm testing doing a regex check on the email and then I'm checking it with this site[url]...
If you type in giantego@hotmail.com for the SMTP validation, it says it has failed the SMTP check, meaning it should be available to create. However, when you go to [url]...
Am working on a form in vb.net.. i have got a fields like name, email-id, phone number, etc.. now i want to validate the email that the user gives.. for example, Name : Sathya
[Code]...
Is it possible to embed a code or something that can be used to verify an image? In my current project I need to load images and I want to have a code or something that my project can read from the image file before it loads it.Select Image -> Check if embedded code is valid -> Load pic on PictureBox
View 10 Replies