Code for validating email address in c

Before you can use the following example codes, you should download the EASend Mail Installer and install it on your machine at first.regular expression pattern to separate the domain name from the email address. Note that the regular expression is compiled using the System. This pattern can be repeated one or more times, and must be followed by the top-level domain name. [0-9a-z]*.) [a-z0-9][-a-z0-9][a-z0-9]))$` is interpreted as shown in the following table. If the character that follows @ is not an opening bracket, match one alphanumeric character with a value of A-Z, a-z, or 0-9, followed by zero or more occurrences of a word character or a hyphen, followed by zero or one alphanumeric character with a value of A-Z, a-z, or 0-9, followed by a period. To determine whether an email address is valid, pass the email address to the System.

I know that I have to search for the @ symbol.I don't know how to make sure that it is before the dot..make sure there is text before it..text after the dot..help would be appreciated! That said, you can try checking the criteria manually, one step at a time. They turn in your program, get a grade, and move on to more difficult concepts they still don't understand because someone always just gave them all the answers.

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I have to write a program to validate an email address. I wanted to work through everything individually, and I sort of understand what you were doing.not really.

If the user is going to be entering an e-mail address in, it should be his or her responsibility to ensure that it was entered in correctly ( You can try one of these free email validation techniques - to track bounced emails, you can build a console app using an open source POP3 library like Indy.

Sockets to download messages - You can then parse the messages to look for bounced emails using a free Mime parsing library like C# Mime Parser, Mime Kit or Sharp Mime Tools - Kit - that some of the components mentioned above haven't been updated in a while, so you'll have to try them out to verify if they work well.

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Please always pass zero-length string to Server Addr property except you want to test whether an email address will be accepted by a specified SMTP server.

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