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();
}
