Quick Expression Question

I am not really too up to speed on RegEx expressions but this should be pretty simple.

Basicaly, I have a textbox and I need the RegEx to INSURE there is a SPACE.  So, basically this would be incorrect:

"johndoe"

BUT THIS WOULD BE CORRECT

"john doe"

Trying to insure the user puts a space between their first and last name.
LVL 2
chrisryhalAsked:
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ozoCommented:
[a-z]+ [a-z]+
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Fernando SotoRetiredCommented:
Hi chrisryhal;

' Regex pattern. Either one of the two following regex patterns will work. In the first pattern the meta
' characters (?i) at the beginning mean that the string is case insensitive. In the second pattern you
' explicitly say that it is case insensitive by repeating the sequence with caps.  
Dim pattern As String = "(?i)[a-z]+\s[a-z]+"
'Dim pattern As String = "[a-zA-Z]+\s[a-zA-Z]+"

' The following test to see if there is two words if not it will dispplay the message.
If Not Regex.IsMatch(TextBox1.Text.Trim, pattern) Then
    MessageBox.Show("TextBox does NOT contain two words. Have user correct it.")
End If

Fernando
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chrisryhalAuthor Commented:
Both worked.  Thanks for the help!!
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