C# TypeInfo GenericParameterPosition
Description
TypeInfo GenericParameterPosition Gets the position
of the type parameter in the type parameter list of the generic type or method
that declared the parameter, when the Type object represents a type parameter
of a generic type or a generic method.
Syntax
TypeInfo.GenericParameterPosition has the following syntax.
public virtual int GenericParameterPosition { get; }
Example
using System;//from w w w. j a v a2s. c o m
using System.Reflection;
using System.Collections.Generic;
public class Base<T, U> { }
public class Derived<V> : Base<int, V> { }
public class Test
{
public static void Main()
{
Type derivedType = typeof(Derived<>);
DisplayGenericTypeInfo(derivedType);
DisplayGenericTypeInfo(derivedType.BaseType);
}
private static void DisplayGenericTypeInfo(Type t)
{
if (t.IsGenericType)
{
Type[] typeArguments = t.GetGenericArguments();
foreach (Type tParam in typeArguments)
{
// IsGenericParameter is true only for generic type
// parameters.
//
if (tParam.IsGenericParameter)
{
Console.WriteLine(
"\t\t{0} (unassigned - parameter position {1})",
tParam,
tParam.GenericParameterPosition);
}
else
{
Console.WriteLine("\t\t{0}", tParam);
}
}
}
}
}
The code above generates the following result.
