Build_GenericType_from_Interface.cs

//using the following interfaces
public interface IUseInterface<T> where T : IAmAnInterface { T ViewModel { get; set; } }

private Type GetGenericType<TInterface>(TInterface someObjectInterface) where TInterface : IAmAnInterface =>
		typeof(IUseInterface<>).MakeGenericType(someObjectInterface.GetType().GetInterfaces()
							   .Where(x => x.Name.Contains("Template")).ToArray());
                 
//returns Type IUseInterface<T> where T : IAmAnInterface