using string in c# code example

Example 1: how to declare a string c#

string MyString = "Your string in here";

Example 2: c# $ string

string color = blue;

// Both versions do the same thing.
Console.WriteLine("The sky is " + color);
Console.WriteLine($"The sky is {color}");
//Note the dollar ^sign    and ^curly^ brackets.

Example 3: C# string

string str1 = "Blue";
string str2 = "Duck";

//returns length of string
str1.Length;

//Make clone of string.
str2 = str1.Clone();

//checks whether specified character or string is exists or not
//in the string value.
str2.Contains(“hack”);

//checks whether specified character is
//the last character of string or not.
str2.EndsWith(“io”);

//compares two string and returns Boolean value true 
//as output if they are equal, false if not
str2.Equals(str1);

//Returns the index position of first occurrence of specified character.
str1.IndexOf(“:”);

//Converts String into lower case based on rules of the current culture.
str1.ToLower();

//Converts String into Upper case based on rules of the current culture.
str1.ToUpper();

//Insert the string or character in the string at the specified position.
str1.Insert(0, “Welcome”);

//Returns the index position of last occurrence of specified character.
str1.LastIndexOf(“T”);

//deletes all the characters from beginning to specified index position
str1.Remove(i);

//replaces the specified character with another
str1.Replace(‘a’, ‘e’);

//This method splits the string based on specified value.
string[] strArray = str1.Split(“/”);

//This method returns substring.
str1.Substring(startIndex , endIndex);

//It removes extra whitespaces from beginning and ending of string.
str1.Trim();

//returns HashValue of specified string.
str1.GetHashCode();

//This is not an exhaustive list.

Example 4: string $ c#

var jh = (firstName: "Jupiter", lastName: "Hammon", born: 1711, published: 1761);
Console.WriteLine($"{jh.firstName} {jh.lastName} was an African American poet born in {jh.born}.");
Console.WriteLine($"He was first published in {jh.published} at the age of {jh.published - jh.born}.");
Console.WriteLine($"He'd be over {Math.Round((2018d - jh.born) / 100d) * 100d} years old today.");

// Output:
// Jupiter Hammon was an African American poet born in 1711.
// He was first published in 1761 at the age of 50.
// He'd be over 300 years old today.