Category: App Services

All about application services for example, Azure App Service. Angular application, Microsoft .NET Core and EF

Getting all types that implement an interface

Using reflection, this is how we get all types that implement an interface with C# 3.0/.NET 3.5 with the least code, and minimizing iterations.

var type = typeof(IMyInterface);
var types = AppDomain.CurrentDomain.GetAssemblies()
    .SelectMany(s => s.GetTypes())
    .Where(p => type.IsAssignableFrom(p));

Basically, the least amount of iterations will always be:

loop assemblies  
 loop types  
  see if implemented.

References

https://stackoverflow.com/questions/26733/getting-all-types-that-implement-an-interface

When to use <> instead of ()

When we are suppose to use different parentheses in C#. When I run into a situation where i am trying to tell if i need to put <> or ().

The dumbed down version to explain is this;

() are for variables. <> are for types. If you have both, <> always comes first.

You would never has A(int). It would be A<int>. You’d also never have B<5>. It would always be B(5). And, rule two, you might have C<int>(5), but never C(5)<int>.

<> are used in generics.