Khalid Abuhakmeh 7/16/2024

How To Fix .NET Nullability Warnings For Guarded Members

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This technical article addresses a common issue in .NET development where nullability warnings persist for members that are logically guarded. It demonstrates a C# code sample where a property is null-checked, yet the compiler still issues CS8602 warnings. The solution involves using the System.Diagnostics.CodeAnalysis.MemberNotNullWhen attribute to give the compiler hints about conditional null safety, resolving warnings and preventing build failures when TreatWarningsAsErrors is enabled.

How To Fix .NET Nullability Warnings For Guarded Members

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