Question

Here’s a piece of code in C# that I am trying to understand.
A class has the following method available in an interface.

T GetLookupValue<T, S>(string sTName, string sFName, string sLuName, S value);

When I use dotPeek to look at the usage of this class, it shows this.

 public T GetLookupValue<T, S>(string sTName, string sFName, string sLuName, S value)
{
  return (T) this.db.a(sTName, sFName, sLuName, false, (object) value, false, false);
}

How do I call this method? What do I need to substitute T and S with?

Answer 1

This method presents itself as a generalized lookup function. If the implementation can really handle any type, then you can use any type at all for S and T.

Examples:

string result = GetLookupValue<string, int>("tname", "fname", "luname", 42);

MyClass result = GetLookupValue<MyClass, string>("tname", "fname", "luname", "blah");