Fullycoded.com

WARNING.CS
===

#warning This is A warning
class zzz
{
//#error This is An error
public static void Main()
{
System.Console.WriteLine(”MAIN”);
}
}

===

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C# code for While and Writeline

1. While1.cs :

class zzz
{
static void Main()
{
int ii;
ii=1;
while ( ii < = 5 )
{
System.Console.WriteLine (”Hi {0}”, ii);
ii++;
}
}
}

2. Writeline1.cs :

// created on 3/1/2008 at 12:36 AM
class callingfunction
{
static void Main(){

System.Console.WriteLine(”Hundred ={0}”,100);

}
}

Similar to C# code for virtual we provide you Virtual OverRide code

class zzz
{
public static void Main()
{
yyy a = new yyy();xxx b = new xxx();yyy c = new xxx();
a.abc();a.pqr();a.xyz();
b.abc();b.pqr();b.xyz();
c.abc();c.pqr();c.xyz();
}}
class yyy
{
public virtual void abc()
{System.Console.WriteLine(”yyy abc”);}
public virtual void pqr()
{System.Console.WriteLine(”yyy pqr”);}
public virtual void xyz()
{System.Console.WriteLine(”yyy xyz”);}
}
class xxx : yyy
{
public override void abc()
{System.Console.WriteLine(”xxx abc”);}
public new void pqr()
//New means that the function pqr is a new function and it has absolutely nothing to do with the pqr in the base class
{
System.Console.WriteLine(”xxx pqr”);
}
public void xyz()
{
System.Console.WriteLine(”xxx xyz”);
}}

Virtual.cs
===

class zzz
{
public static void Main()
{
yyy a = new xxx();
yyy b = new vvv();
xxx c = new vvv();
a.abc();a.pqr();a.xyz();b.abc();b.pqr();b.xyz();c.abc();c.pqr();c.xyz();}}
class yyy
{
public void abc()
{System.Console.WriteLine(”yyy abc”);}
public virtual void pqr()
{System.Console.WriteLine(”yyy pqr”);}
public virtual void xyz()
{System.Console.WriteLine(”yyy xyz”);}
}
class xxx : yyy
{
public virtual void abc()
{System.Console.WriteLine(”xxx abc”);}
public new void pqr()
{System.Console.WriteLine(”xxx pqr”);}
public override void xyz()
{System.Console.WriteLine(”xxx xyz”);}
}
class vvv : xxx
{
public override void abc()
{System.Console.WriteLine(”vvv abc”);}
public void xyz()
{System.Console.WriteLine(”vvv xyz”);}
}

Using.cs
===

using System;
using ashish;
class zzz {
static void Main()
{
yyy.abc();
}
}
namespace ashish
{
class yyy
{
public static void abc()
{
Console.WriteLine(”abc”);
}
}
}
//After the word using you can only write the name of a namespace…

Unsafe : This means pointers are allowed in C# code. If you wish to compile unsafe code then should specify the /unsafe compiler option in the command line(This is not required if you are using Visual Studio.NET).

using System;
class zzz {
public static void Main() {
yyy a = new yyy();
a.abc();
}
}
unsafe class yyy {
unsafe public void abc() {
int *i; //declaring pointer
int j=1;
i = &j; //pointing
Console.WriteLine((int)i);
*i = 10;
Console.WriteLine(j);
}
}

class zzz
{
public static void Main()
{
yyy a;
a=new yyy();
try
{
a.abc();
System.Console.WriteLine(”Bye”);
}
catch (System.Exception e)
{
System.Console.WriteLine(”In Exception”+ e.ToString());
}
System.Console.WriteLine(”After Exception”);
System.Console.Read();
}
}
class yyy {
public void abc()
{
throw new System.Exception(”C# Throw code exception”);
System.Console.WriteLine(”C# Throw code“);
}
}

1. C# Threads Example 1
using System.Threading;
public class yyy
{
public void abc()
{
for ( int i = 0; i< =3;i++)
{
System.Console.Write(i + ” “);
}
}
public void pqr()
{
for ( int i = 0; i<=3;i++)
{
Thread.Sleep(1000);
System.Console.Write(i+ “…”);
}
}
}
public class zzz
{
public static void Main()
{
yyy a = new yyy();
Thread t = new Thread(new ThreadStart(a.abc));
Thread t1 = new Thread(new ThreadStart(a.pqr));
t.Start();
t1.Start();
}
}

2. Example 2 of threading in C Sharp (C#)
using System;
using System.Threading;

class App {
public static void Main() {

Console.WriteLine(” (Hit or Press Enter to terminate the sample)”);
Timer timer = new Timer(new TimerCallback(CheckStatus), null, 1, 2000);

Console.WriteLine(”Press Enter to close window”);
Console.Read();
}

// The callback method’s signature MUST match that of a System.Threading.TimerCallback
// delegate (it takes an Object parameter and returns void)
static void CheckStatus(Object state) {
Console.WriteLine(”Threads in C # sharp”);

}
}

C# code for System Variables

class zzz
{
public static void Main(){
System.Collections.IDictionary i=System.Environment.GetEnvironmentVariables ();
System.Collections.IDictionaryEnumerator d=i.GetEnumerator();
System.Console.WriteLine(”Content-Type:text/html\n”);
System.Console.WriteLine(i.Count + “
“);
while (d.MoveNext())
{
System.Console.WriteLine(”{0}={1}
“,d.Key,d.Value);
}}}

One of the simplest program for Struct…

===
class zzz
{
public static void Main()
{
xxx a = new xxx(10);
}
}
struct xxx
{
public int i,j;
public xxx(int p)
{
i = p;
j = 0;
}
}
===

Just compile it and run it to understand the c# code better.

Static in c#
===
class zzz
{
static void Main()
{
yyy a=new yyy();
a.abc();
yyy.pqr();
}
}
class yyy
{
public void abc()
{
System.Console.WriteLine(”C# at abc”);
}
public static void pqr()
{
System.Console.WriteLine(”C# at pqr”);
}
}

PS : VB Developers have the biggest problem understanding static when migrating from programming language Visual basic to a C#.

WriteLine.cs and Return.cs :

1. WriteLine.cs
===
// created on 3/1/2002 at 12:36 AM
class callingfunction
{
static void Main(){

System.Console.WriteLine(”Hundred ={0}”,100);

}
}
===

2. Return.cs
===
class zzz
{
static void Main()
{
int ii = abc();
System.Console.WriteLine(”hi {0}”,ii);
}
static int abc()
{
System.Console.WriteLine(”abc”);
return 100;
// after return everything ignored
System.Console.WriteLine(”abc”);
}
}
===