protected string DemoName;
public void SetDemo(int dID, string dName) {
public String GetDemo() {
public class CSharpDemo : Demo {
public void RenameDemo(String dNewName) {
public static void Main(string[] args) {
CSharpDemo csharp = new CSharpDemo();
csharp.RenameDemo("CSharp Demo by Jonard");
Console.WriteLine(csharp.GetDemo());