In C# how can i check if T is of type IInterface and cast to that if my object supports that interface?

Question

In C#, I have a function that passes in T using generics and I want to run a check to see if T is an object that implements a

Answer 1

Is the OfType(...) method (link) what you're looking for?

public class MyModel : IModel where T : MyObjectBase
{

    public IQueryable GetRecords()
    {
        var entities = Repository.Query();
        if (typeof(IFilterable).IsAssignableFrom(typeof(T)))
        {
            //Filterme is a method that takes in IEnumerable
            entities = FilterMe(entities));
        }
        return entities;
    }

     public IEnumerable FilterMe(IEnumerable linked) where TResult :  IFilterable
    {
        var dict = GetDict();
        return linked.OfType().Where(r => dict.ContainsKey(r.Id));
    }
}