What is string ?
A string is a sequence
of characters. In C#, a string is a sequence of unicode characters. It is a
data type which stores a sequence of data values, usually bytes, in which
elements usually stand for characters according to a character encoding. When a
string appears literally in source code, it is known as a string literal.
How to display string ?
It’s very easy to display string in c# . In below code I have
given example.
class Program
{
static void Main(string[] args)
{
string name = "Sourav Kayal";
//Initialization of string
Console.Write(name);
Console.Read();
}
}
Here name is a string
variable and in am initializing string by “=” operator. And I am using string
variable name as a argument of Write() function. Like this,
Console.Write(name);
And the output is here.
Get length of string.
String class contains
Length property , and using that you can get length of string variable. Here
below code will show length of string
class Program
{
static void Main(string[] args)
{
string name = "Sourav";
Console.Write(name.Length);
// Length property gives length of string
Console.Read();
}
}
And the output is here
Concatenation of
string in c#
It’s very easy to
concatenate two and more string in c#. Here ‘+’ operator is overloaded and
perform concatenation operation. Here I have given below sample code.
class Program
{
static void Main(string[] args)
{
string name = "Sourav";
string surname = " Kayal";
Console.Write(name + surname);
Console.Read();
}
}
And the output is here.
Convert to uppercase and
lowercase.
It’s very natural need
to convert lower case string to upper case and vice versa. String class
provides toUpper() and toLowe function to get it done. Have a look to below
code.
class Program
{
static void Main(string[] args)
{
string name = "sourav";
Console.Write(name.ToUpper());
//Make lower case to uppercase
string SURNAME = "KAYAL";
Console.Write(SURNAME.ToLower());
//Make upper to lower case
Console.Read();
}
}
This is the output.
Get Sub string from a
long string
String class provides
SubString() function to get part of string. It takes two argument
1) Starting character.
2) Length of character.
Like
Substring(0,3)
Here 0 indicates 0th character means first character. And 3 represent three character
from the first character. I have given the code snippet here.
class Program
{
static void Main(string[] args)
{
string name = "sourav";
Console.Write(name.Substring(0,3));
Console.Read();
}
}
And the output is
Split long string to
string array
If you have a lengthy
string separated by some special character, then use split() function to make
them separate string each.
Here is the code for
them
class Program
{
static void Main(string[] args)
{
string name = "name1,name2,name3";
string[] Each_name =
name.Split(',');
//Spiliting string by , separator.
Console.Write(Each_name[1]);
Console.Read();
}
}
And the output is
