static void Main(string[] args)
{
OldClass obj1 = new OldClass();
obj1.MethodOne();
obj1.MethodTwo();
obj1.MethodThree();
obj1.MethodFour(10);
obj1.MethodFive();
string str = "AbCdEfGhIjK";
Console.WriteLine("String is : {0}", str);
Console.WriteLine(str.ToSimpleCapital());
Console.ReadLine();
}
public static void MethodThree(this OldClass O)
{
Console.WriteLine("Method Three");
}
public static void MethodFive(this OldClass O)
{
Console.WriteLine("Method Five:" + O.x);
}
public static void MethodFour(this OldClass O, int x)
{
Console.WriteLine("Method Four: " + x);
}