How to Find Unawaited Async Method Calls in C#?
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CleverCoder93
I'm modernizing a legacy C# application and recently updated several SQL calls to use 'await'. However, I found an async method that wasn't awaited, which caused the main thread to close the database connection while it was still trying to execute some SQL. This resulted in an error due to the connection not being open. Is there a way in C# or Visual Studio to identify all instances where async methods are called without 'await'?
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Are you using Entity Framework? It usually manages connections for you, so it might catch these kinds of issues automatically.
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Check out a package called Lindhart analyzer. I tackled a similar issue recently and it worked wonders for catching unawaited tasks.
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Not every async call has to be awaited, though. Sometimes just returning the task is more efficient and saves some overhead, but be aware it could lead to worse stack traces.
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If you don't use Visual Studio, consider using SonarQube for IDE, as it can help identify these missed awaits.
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There are actually Roslyn analyzers that can help you detect when async methods aren't awaited. They're pretty helpful for cases like yours.
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