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c#interfaceasync-await
David Dury
David Dury

Reputation: 5717

c# interface implementation async await

Ok! This is already stressing me for few hours.

I'm using a provided assembly that has an interface I need to implement

public interface ICustomInterface
{
      CustomType DoSomething(string name);
}

in my code I do like this:

public class MyClass: ICustomInterface
{
   public MyClass()
   {
   }

   // now I should implement the interface like this

   public CustomType DoSomething(string name)
   {
          CustomType nType = new CustomType();

          // do some work

          return nType;
   }
}

So far so good but in my implementation of the interface in the MyClass I need to make use of async await therefore the implementation should be like this:

    public class MyClass: ICustomInterface
{
   public MyClass()
   {
   }

   // now I should implement the interface like this

   public async Task<CustomType> DoSomething(string name)
   {
          CustomType nType = new CustomType();

          await CallSomeMethodAsync();

          // do some extra work

          return nType;
   }
}

And of course this doesn't work because it complains the Interface ICustomerInterface.DoSomething.... is not implemented.

Is there a way to override the interface implementation that accepts async await?

I cannot modify the provided assembly.

Upvotes: 0

Views: 4288

Answers (1)

Servy
Servy

Reputation: 203827

That's impossible. If the interface requires the operation to be computed synchronously, then the operation needs to be performed synchronously.

Upvotes: 7

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