base type is not CLS-compliant in Third Party Control

I have a control that I purchased. When I tried to inherit from the co开发者_开发技巧ntrol I get this message:

Warning: 'MyNamespace.MyFile': base type 'Mooseworks.UI.MwTextBox' is not CLS-compliant

Is there any way around this besides asking the vendor of my control to make their control CLS compliant?

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I went to the build tab of the project and added 3009 in the "Suppress warnings:" section.

As this is not my code I don't feel too bad about suppressing this warning.