Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
Visual Studio will automatically create using statements for you whenever you create a new page or project. Some of these you will never use.
Visual Studio has the useful feature to “remove unused usings”.
I wonder if there is any negative effect on program performance if the using statements which are never accessed, remain mentioned at the top of the file.
An unused using has no impact to the runtime performance of your application.
It can affect the performance of the IDE and the overall compilation phase. The reason why is that it creates an additional namespace in which name resolution must occur. However these tend to be minor and shouldn’t have a noticeable impact on your IDE experience for most scenarios.
It can also affect the performance of evaluating expressions in the debugger for the same reasons.