C# Cannot replace void with async Task -


i have following class derived entity framework class follows.

internal class myinitializer : createdatabaseifnotexists<configurationdbcontext> {     protected override async void seed(configurationdbcontext context)     {         await dbhelper.addsampledataasync(context);         base.seed(context);     } }

i following compiler error when change "void" "async task".

return type must 'void' match overridden member

async/await best practices tell return async task instead of void. wanted make sure usage of void here 1 of acceptable scenarios using void. other options have anyways?

when overriding method must have same signature original method of base class (or interface / abstract class). imagine based on question expected behavior of seed() synchronous operation. therefore it's not idea override , change behavior asynchronous.

instead should create second method asynchronous, , keep synchronous one.

this method below (as suggested @danielearwicker) allows have both synchronous , asynchronous version waiting asynchronous operation complete in synchronous version of seed()

internal class myinitializer : createdatabaseifnotexists<configurationdbcontext> {     protected override void seed(configurationdbcontext context)     {         seedasync(context).wait();     }      protected async task seedasync(configurationdbcontext context)     {         await dbhelper.addsampledataasync(context);         base.seed(context)     } }

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