1. Practical No.11
Program Name :- WAP in c# , to design a class employee such that it will
automatically emp no. and also keep total no. of employee by using the concept of
static data member function.
Date :- 12/9/2014
using System;
using System.Collections.Generic;
using System.Text;
namespace demo
{
class employee
{
public static void Main()
{
static int i, empno, n, count = 0;
static string name;
Console.WriteLine("How many you want to require?n");
n = int.Parse(Console.ReadLine());
Console.WriteLine("Enter information of the employeen");
for (i = 1; i <= n; i++)
{
Console.WriteLine("Enter name of employeen");
name = Console.ReadLine();
Console.WriteLine("Employee no.ist10" + i);
count++;
}
Console.WriteLine("Total no. of employee=" + count);
Console.ReadKey();
}
}
}
/*********OUTPUT
How many you want to require?
3
Enter information of the employee
Enter name of employee
AAA
Employee no.is 101
Enter name of employee
BBB
Employee no.is 102
Enter name of employee
CCC
Employee no.is 103
Total no. of employee=3 *************/

2. Practical no 12
using System;
classbook
{
pubicintbookno, bookname;
public book(int x, string y)
{
get
{
Console.WriteLine(“Book No. :”+bookno”nBookName : ”+bookname);
}
set
{
bookno=value;
bookname=value;
}
}
classbooktest
{
public static void Main()
{
book b1=new book(1, “E. Balgurusamy”);
}
}
// Practical No. 13
//Program Name :- WAP in C#, to find circumference of circle by using
multilevel inheritance.
//Written By Anand M. Khandre
Date :- 22/9/2014
using System;
using System.Collections.Generic;
using System.Text;
namespace program
{
classdemo
{
publicint r;

3. public demo(int r)
{
this.r = r;
}
publicvirtualvoid display()
{
Console.WriteLine(" Radius of Circle =" + r);
}
}
classdemo1 : demo
{
double c;
public demo1(int r,double x): demo(r)
{
this.x=x;
}
publicoverridevoid display()
{
c = 2 * x * r;
Console.WriteLine(" Cirumferene of Circle =" + c);
}
}
classoverridetest
{
publicstaticvoid Main()
{
demo1 d = newdemo1(5,3.14);
d.display();
Console.ReadKey();
}
}
}
//Practical No. 14
//Program Name :- WAP, to find the simple interest by using multilevel
inheritance.
//Written By Anand M. Khandre
//Date :- 20/9/2014
using System;
using System.Collections.Generic;
using System.Text;
namespace demo
{
publicclass person
{
publicdouble SI,P,R,T;
publicvoid fun1()

4. {
Console.WriteLine("nEnter the value of the total amountn");
P=double.Parse(Console.ReadLine());
Console.WriteLine("nEnter the rate of interestn");
R=double.Parse(Console.ReadLine());
Console.WriteLine("nEnter the time spann");
T=double.Parse(Console.ReadLine());
}
}
class p1: person
{
publicvoid fun2()
{
person.fun1();
SI=((P*R*T)/100);
}
}
class p2: p1
{
publicvoid fun3()
{
p1.fun2();
Console.WriteLine("nSimple interest="+SI);
}
}
class display
{
publicstaticvoid Main()
{
p1 S=new p1();
S.fun2();
p2 I=new p2();
I.fun3();
Console.ReadLine();
Console.ReadKey();
}
}
}
Practical no;-15 Multiple inheritance.
using System;
interface volume
{
double compute(double x);
}
class box : volume
{
public double compute(double x)
{
return(x*x*x);

5. }
}
classcylender : volume
{
public double compute(double x)
{
public double h;
h=6;
return(3.14*x*x*h);
}
}
class cone : volume
{
public double compute(double x)
{
return(0.33*3.14*x*x*h);
}
}
classinttest
{
pubic static void Main()
{
box b=new box();
cylinder c=new cylinder();
cone c1=new cone()
volume v;
v=b as volume;
Console.WriteLine(“Volume of box=”+v.compute(12));
v=c as volume;
Console.WriteLine(“Volume of cylender=”+v.compute(10));
v=c1 as volume;
Console.WriteLine(“Volume of cone=”+v.compute(14));
}
}

6. //Practical No. 16
//Program Name :- WAP, to find the area of trapezium and cube by using the
concept of multiple implementation of interface.
//Written By Anand M. Khandre
//Date :- 22/9/2014
using System;
using System.Collections.Generic;
using System.Text;
interfacetrap
{
double a1();
}
interfacecube
{
double a2();
}
classval : trap, cube
{
double a, b, h;
public val(double a, double b, double h)
{
this.a = a;
this.b = b;
this.h = h;
}
publicint a1()
{
return (0.5*(a+b)*h);
}
publicint a2()
{
return (6 * a * a);
}
}
classdisplay
{
publicstaticvoid Main()
{
val d=newval(10,20,30);
trap t=(trap)d;
Console.Write("Area of trapazium="+t.a1());
cube c=(cube)d;
Console.Write("Surface area of cube="+c.a2());
Console.ReadKey();
}
}

7. // Practical No. 18
//Program Name :- WAP in C#, to add and multiply of two nos. by using
concept of delegate.
//Written By Anand M. Khandre
Date :- 1/10/2014
using system;
delegateintarithop(intx,int y);
classmathop
{
public static int add(inta,int b)
{
return(a+b);
}
public static intmul(inta,int b)
{
return(a*b);
}
}
classdelegatetest
{
public static void Main()
{
arithopo1=new arithop(mathop.add);
arithop o2=new arithop(mathop.mul);
int result1=o1(200,100);
int result2=o2(22,20);
Console.WriteLine(“Addition =”+result1);
Console.WriteLine(“Multiplication=”+result2);
Console.ReadKey();
}
}

8. // Practical No. 19
//Program Name :- WAP in C#, to implement the concept of nested tryblock.
//Written By Anand M. Khandre
Date :- 29/9/2014
using system;
classnestedtry
{
staticint m=10;
staticint n=0;
static void division()
{
try
{
int k =m/n;
}
catch(Argument Exception e)
{
Console.WriteLine(“Caught an expection ”);
}
}
public static void Main()
{
try
{
division();
}
catch(DivideByZeroException e)
{
Console.WriteLine(“ Caught an exception”);
}
finally
{
Console.Write(“Inside Main Method”)
}
Console.ReadKey();
}
}

9. //// Practical No. 20
//Program Name :- WAP in C#, to implement the concept of event handling.
//Written By Anand M. Khandre
Date :- 28/9/2014
using System;
using System.Collections.Generic;
using System.Text;
publicdelegatevoidEdelegate(string str);
classEventclass
{
publiceventEdelegate status;
publicvoid Trigger()
{
if (status!=null)
{
status("Event triggered");
}
}
}
classEventtest
{
publicstaticvoid Main()
{
Eventclass ec=newEventclass();
Eventtest et= newEventtest();
ec.status +=newEdelegate(et.Eventcatch);
ec.Trigger();
}
publicvoid Eventcatch(string str)
{
Console.WriteLine(str);
Console.ReadKey();
}
}
//output
Event triggered
// Practical No. 22
//Program Name :- WAP in C#, to implement the multicast delegate.
//Written By Anand M. Khandre
Date :- 28/9/2014

10. using System;
using System.Collections.Generic;
using System.Text;
delegatevoidMdelegate();
classDM
{
staticpublicvoid display()
{
Console.WriteLine("New Delhi");
}
staticpublicvoid print()
{
Console.WriteLine("New York");
}
}
classMtest
{
publicstaticvoid Main()
{
Mdelegate m1 = newMdelegate(DM.display);
Mdelegate m2 = newMdelegate(DM.print);
Mdelegate m3 = m1 + m2;
Mdelegate m4 = m2 + m1;
Mdelegate m5 = m3 - m2;
m3();
m4();
m5();
Console.ReadKey();
}
}
//output
New Delhi
New York
New York
New Delhi
New Delhi