Switch case contains

To check if a string str contains specified character value , or say if specified character is present in the string, use C# String. Contains(Char) method . Call Contains() method on the string str and pass the character value as argument. Contains() method returns True if str contains value .

C# String Contains() The C# Contains() method is used to return a value indicating whether the specified substring occurs within this string or not.

To check if a string str contains specified substring value , or say if specified substring is present in the string, use C# String. Contains(String) method . Call Contains() method on the string str and pass the substring value as argument. Contains() method returns True if string str contains the substring value .