VB.net string - trim string after certain instance of character

Hi
This follows on a bit from question ID 21389189 (but may not need to use it)

I have a string of "errors" which can get rather long.  

If number of vbcrlf > 5 I want to trim the string - it has to be displayed on a messagebox so line upon line of vbcrlf is too big.

So, the string  is called allErrors and I want to trim it after 5 vbcrlf, instead of displaying full string , allerrors should only display up to the 5th vbcrlf and end with "too many errors to display"
Using ID 21389189 code,
if CountChars(allErrors, vbcrlf) > 5        'this is how question ID 21389189 counts number of times a character appears
'delete the text after the 5th vbcrlf        'what goes here?
end if

Thanks for helpStart Free Trial