using System;
using System.Reflection;
public class TestClass
{
public void Method1(params String[] args)
{}
}
public class DemoClass
{
static void Main(string[] args)
{
Type clsType = typeof(TestClass);
MethodInfo mInfo = clsType.GetMethod("Method1");
ParameterInfo[] pInfo = mInfo.GetParameters();
if (pInfo != null)
{
bool isDef = Attribute.IsDefined(pInfo[0], typeof(ParamArrayAttribute));
Console.WriteLine(isDef );
}
}
}