Validating E-mail Address In Textbox?

[twilitegxa]

I would like to know if there is a simple way to validate an e-mail address? I have seen many ways that appear to use functions but I would like to use something simple because currently my error control is done like this:

If txtEmail.Text = "" Then
ErrorProvider1.SetError(txtEmail, "You must enter your e-mail address.")
Else
ErrorProvider1.SetError(txtEmail, "")

Is there a way to use the same type of syntax but instead of checking if the textbox is empty, check if it a valid e-mail address? I know the regular expressions can be used, but how in this circumstance?

[The Fire Snake]

What characters do you consider invalid?

[twilitegxa]

I would like to ensure it is a valid e-mail address, such as the regular express checks for.

[JuggaloBrotha]

Dim EmailRegEx As New System.Text.RegularExpressions.Regex("\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*")

If EmailRegEx.IsMatch(YourTextBoxHere.Text.Trim) Then
  'Is valid
Else
  'Not valid
End If

[twilitegxa]

Thank you! I was having trouble with the expressions for some reason. Every time I tried one, it wasn't the right one because it wasn't ever letting a valid e-mail address pass through. Thank you so much!!!

[JuggaloBrotha]

No problem, be sure to mark your thread as Resolved.