C# string handling - Part 1

We have lots of string handling functions in C#.net. We are just going to see some basic

functions.

C# string Split() - Splitting a string to an Array

The split() can be used to Split an entire string in to an string array. This will be

done using this split method. This can be used when you need long strings to be splitted

to seperate string objects.

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string mString = "This is to show Splitting in strings";

string[] mArr = mString.Split(' ');

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Here in the above code we have a string named mString and we have assigned a string to

it. Now check the second line of it. We have created an String Array to store the values

that gets Splitted.

mString.Split(' ') method splits the Entire string into an array. We have given a white

space as the argument for the Split method for the string. This will allow it to split

the string whenever it sees a white space inside the string.

Now, if you need to get the Splitted values of the string you must have to fetch the

entire items of the Array mArr using some loops.

C# string.Join() - Joining an Array as a String

The Join() method can be used to join an Array to a single String. If we have an array

to be used as a single string you can use this string.Join() method.

Let's see an example for it

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string joinedString = string.Join("-", mArr);

//Here the JoinedString variables value will be

// "This-is-to-show-Splitting-in-strings"

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In the above code in the Join function we have two overloads mainly

string.Join("String Separator","The array to Join");

Here in the above we have set the Separator as "-"(hyphen). So it will attach each Array

element with this "-". Like wise we can join the Strings in any way we like.

Write a Program to show numbers in Fibonacci Series in C#??

Fibonacci series is a pattern in which digits are shown in a manner that it adds the last two digit from the series ie..

0 1 1 2 3 5 8......... n..

Here, the first no is 0 and the second no is 1 so the third number must be 0+1, and the fourth number must be Sum of Second and Third.. ie 1+1, like wise we must create it for the Entire Series....

Here is the Program to show the first ten digits in Fibonacci Series in C#...

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using System;

namespace MyFibonacciApp

{

class _FibonacciSeries

{

static void Main(string[] args)

{

int j = 0;

int k = 0;

int l = 1;

for(int i = 0; i <10;i++)

{

Console.Write("{0} ", k);

j = l;

l = k;

k = l + j;

}

}

}

}

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Destructor in C#

C# Destructors are used to destroy an object of a Class. Destructors are automatically invoked when the Scope of the Object goes out. We represent a Destructor with a tilde(~) symbol. Destructor will also be having the Same name of the class.

If there is a class with the name "Hello" we can represent its destructor as

~Hello()

Destructors cannot be overloaded, Inhertied or have Modifiers defined to it.

we can see a Simple program..

-------------------------------------------------

using System;

namespace Destructorss

{

class One

{

//Constructor

public One()

{

Console.WriteLine("First Constructor Called");

}

//Destructor

~One()

{

Console.WriteLine("First destructor is called.");

}

}

class Two : One

{

//Constructor

public Two()

{

Console.WriteLine("Second Constructor Called");

}

//Destructor

~Two()

{

Console.WriteLine("Second destructor is called.");

}

}

class Three : Two

{

//Constructor

public Three()

{

Console.WriteLine("Third Constructor Called");

}

//Destructor

~Three()

{

Console.WriteLine("Third destructor is called.");

}

}

class MyDestructor

{

static void Main()

{

Three t = new Three();

}

}

}

/*The result of this Program will be:-

First Constructor Called

Second Constructor Called

Third Constructor Called

Third destructor is called.

Second destructor is called.

First destructor is called.

*/

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In the above program we have constructors and Destructors. Constuctors invoke from the First to the Third while Destructors go just in the Opposite way ie it starts from Third destrucor and goes to First....