How to define c# Version in ASP.Net markup

Asked Aug 27 '19 at 09:07

Active Aug 27 '19 at 09:07

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I'm wondering if it is possible to use c# language features in ASP.Net Markup (*.aspx and *.ascx files) which were released after version 5.0. Is there a possibility to declare the markup language version in the header area of an aspx page?

I want to us the null propagation operator and getting following error:

Feature 'null propagating operator' is not available in C# 5. Please use language version 6 or greater.

asked Aug 27 '19 at 09:07

Gerrit Horeis

I'm not 100% sure, but I hope that you just need to change your C# language version in your project settings:\ – vasily.sib Aug 27 '19 at 09:13
@vasily.sib That is not enough. See the duplicate. – Patrick Hofman Aug 27 '19 at 09:14
@PatrickHofman Thanks, you are right, solution in the mentioned topic works for me! – Gerrit Horeis Aug 27 '19 at 13:38

How to define c# Version in ASP.Net markup

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