Assuming the following interface which I use to define the parameter type and return type for a stored procedure...
public interface IStoredProcedure<out TReturn, out TParameter>
where TReturn : class
where TParameter : class
{
TReturn ReturnType { get; }
TParameter ParameterType { get; }
}
...is it possible to pass this interface as a TypeParameter
for a method? Something along the lines of this (which does not compile)
public static void DoAction<TProcedure>(TProcedure procedure1)
where TProcedure : IStoredProcedure<TReturnType, TParameterType>
{
// do some work
}
... or something along these lines...
public static void DoAction<IStoredProcedure<TReturnType, TParameterType>>(IStoredProcedure procedure1)
where TReturnType : class
where TParameterType : class
{
// do some work
}
neither of these two methods compile, and I just cant work out how to write them to make them compile. In the DoAction()
method I need to interogate the types of the parameters and return type.
You need to use the type arguments where you specify the interface:
... otherwise you're referring to a non-generic
IStoredProcedure
interface. (Don't forget that C# allows types to be "overloaded" by generic arity.)