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Home/ Questions/Q 110155
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Asked: May 11, 20262026-05-11T02:10:57+00:00 2026-05-11T02:10:57+00:00

When using var to declare variables in C#, is there boxing/unboxing taking place? Also

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When using ‘var’ to declare variables in C#, is there boxing/unboxing taking place?

Also is there a chance of a runtime type mis-match when using var to declare variables?

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  1. 2026-05-11T02:10:58+00:00Added an answer on May 11, 2026 at 2:10 am

    No. using var is compiled exactly as if you specified the exact type name. e.g.

    var x = 5; 

    and

    int x = 5; 

    are compiled to the same IL code.

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