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C#

C# static code analysis

Unique rules to find Bugs, Vulnerabilities, Security Hotspots, and Code Smells in your C# code

  • All rules 493
  • Vulnerability46
  • Bug88
  • Security Hotspot24
  • Code Smell335

  • Quick Fix 61
Filtered: 11 rules found
multi-threading
    Impact
      Clean code attribute
        1. Blocks should not be synchronized on local variables

           Bug
        2. Threads should not lock on objects with weak identity

           Code Smell
        3. "Thread.Resume" and "Thread.Suspend" should not be used

           Bug
        4. "this" should not be exposed from constructors

           Code Smell
        5. "ConfigureAwait(false)" should be used

           Code Smell
        6. "async" methods should not return "void"

           Bug
        7. "ThreadStatic" fields should not be initialized

           Bug
        8. Instance members should not write to "static" fields

           Code Smell
        9. Shared resources should not be used for locking

           Bug
        10. Blocks should be synchronized on read-only fields

           Bug
        11. Locks should be released on all paths

           Bug

        "async" methods should not return "void"

        consistency - conventional
        reliability
        Bug
        • multi-threading
        • async-await

        Why is this an issue?

        How can I fix it?

        More Info

        An async method with a void return type does not follow the task asynchronous programming (TAP) model since the return type should be Task or Task<TResult>

        Doing so prevents control over the asynchronous execution, such as:

        • waiting for the execution to complete
        • catching any exception that might occur during execution
        • testing execution behavior

        Exceptions

        • Methods implementing an interface
        • Methods overriding a base class method
        • Virtual methods
        • Methods with the EventHandler delegate signature Using void for EventHandler is compliant with the TAP model.
          public async void button1_Click(object sender, EventArgs e)
          {
            await DoSomethingAsync();
          }
          
        • Methods name matching On[A-Z]\w* pattern Some frameworks may not use the same EventHandler method signature.
          public async void OnClick(EventContext data)
          {
            await DoSomethingAsync();
          }
          
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