Sonar Source rule 3906 Event Handlers should have the correct signature
Sonar Source code static analysis rule RSPEC-3906 states:
Delegate event handlers (i.e. delegates used as type of an event) should have a very specific signature:
The problem was that I was getting the warning on a simple event declared as EventHandler<TEventArgs>. Going to its source code page revealed the reason in a comment: // Removed TEventArgs constraint post-.NET 4.
Delegate event handlers (i.e. delegates used as type of an event) should have a very specific signature:
- Return type void.
- First argument of type System.Object and named 'sender'.
- Second argument of type System.EventArgs (or any derived type) and is named 'e'.
The problem was that I was getting the warning on a simple event declared as EventHandler<TEventArgs>. Going to its source code page revealed the reason in a comment: // Removed TEventArgs constraint post-.NET 4.
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