We help IT Professionals succeed at work.

We've partnered with Certified Experts, Carl Webster and Richard Faulkner, to bring you a podcast all about Citrix Workspace, moving to the cloud, and analytics & intelligence. Episode 2 coming soon!Listen Now


'New' cannot be used on an interface > Dim dt As New DataTable("ID") <- works on some vb forms but not on other

jxharding asked
Medium Priority
Last Modified: 2008-02-01
i've got 2 vb forms and i cannot for the love of me figure out what the difference between them are.

Dim dt As New DataTable("ID")

works on my 1 form, but not on some of the other forms
it give the ERROR : 'New' cannot be used on an interface

i searched for word interface on the page, but didnt find it.
i can copy the exact code to another vb.net page and it will work there.

pls help.

Watch Question

Distinguished Expert 2017
Hi jxharding;

In the form that it does not work try it like this:

        Dim dt As New System.Data.DataTable("ID")

It may be that you have imported other name spaces in the form that it does not work and you are getting name clash.


Not the solution you were looking for? Getting a personalized solution is easy.

Ask the Experts
Access more of Experts Exchange with a free account
Thanks for using Experts Exchange.

Create a free account to continue.

Limited access with a free account allows you to:

  • View three pieces of content (articles, solutions, posts, and videos)
  • Ask the experts questions (counted toward content limit)
  • Customize your dashboard and profile

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.


Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.