C# Type GetGenericArguments

Description

Type GetGenericArguments returns an array of Type objects that represent the type arguments of a generic type or the type parameters of a generic type definition.

Syntax

Type.GetGenericArguments has the following syntax.


public virtual Type[] GetGenericArguments()

Returns

Type.GetGenericArguments method returns

Example

The following code example uses the GetGenericArguments method to display the type arguments of a constructed type and the type parameters of its generic type definition.


using System;//from   w  w w  .  ja  va 2s .com
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 t = typeof(Derived<>);

        if (t.IsGenericType)
        {
            Type[] typeArguments = t.GetGenericArguments();
        
            Console.WriteLine(typeArguments.Length);
        
            foreach (Type tParam in typeArguments)
            {
                if (tParam.IsGenericParameter)
                {
                    Console.WriteLine("\t\t{0}\t(unassigned - parameter position {1})",
                        tParam,
                        tParam.GenericParameterPosition);
                }
                else
                {
                    Console.WriteLine("\t\t{0}", tParam);
                }
            }
        }
    }
}

The code above generates the following result.