Validating email address in asp net

it is a very useful and time saving feature of visual studio.

when validation failed regularexpressionvalidator control show a predefined error message.

validating email address in asp net-57

Dim str Pattern As String = "^([0-9a-z A-Z]([-.\w]*[0-9a-z A-Z])*@([0-9a-z A-Z][-\w]*[0-9a-z A-Z]\.) [a-z A-Z])$" Dim CMatch As System.

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But when you fill in an invalid email address like: "fwenrjfw" then the form does not say "E-mail is not valid".

How can I get the form to validate the input as an email address? files got altered in some way or are not updated to the latest version, since they do validate e-mail inputs.

Obviously there are expressions that you could use to determine if the format of an e-mail address is valid but you can also use the System.

Mail Address class to check if an exception occurs when creating the e-mail to determine if it is a valid or not : I suppose it depends on how you are currently sending it, but you might consider checking out this related Stack Overflow discussion along with this one which covers a few different techniques to try and check if your message was sent ().

Hi All, I have a requirement where I want to validate an E-Mail Address in a Text Box as soon as the Address is typed in it.(Not on Submit button click) Please suggest me as to how to appraoch this. because you said ( Not on Submit button click ), I suggest you use javascript to validate the textbox email update : someone post it , you can take a look and if you want to check while typing(not after exiting from textbox),you can use onkeydown instead of onchange and of course,instead of showing an alert,you can display an error image or something but you've got the idea! But when the Page loads, Iam getting a Pop Up message " A Runtime Error has occured. " Line: 388 Error : Expected "{" And it is asking for "Yes" and "No" Hi, My requirement is not to use a Required field and Regular Expression validators which validate on Button Click.

I have triet in the same manner which you have explained as above.

The part before the @ sign is the local part of the address, and the part after the @ sign is a domain name to which the email message will be sent .

The above email address feedback is the local part and is the domain name to which the email message will be sent . Is Match Method (String, String) - indicates whether the specified regular expression finds a match in the specified input string.

More Info on Validation Settings: Unobtrusive Validation Mode, For this problem, you could refer to the following links.


  1. This tactic not only helps on offense but also on defense.

  2. The first message came in within one minute of registering on the site. It's actually amazing that some people fall for these type of scams when they are so blatant and in your face.

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