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C# | Char.ToLowerInvariant(Char) Method

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This method is used to converts the value of a Unicode character to its lowercase equivalent using the casing rules of the invariant culture. Syntax:
public static char ToLowerInvariant (char c);
Here, c is the Unicode character to convert. Return Value: This method returns the lowercase equivalent of the c parameter, or the unchanged value of c, if c is already lowercase or not alphabetic. Below programs illustrate the use of Char.ToLowerInvariant(Char) Method: Example 1:
// C# program to demonstrate
// Char.ToLowerInvariant()
// Method
using System;
  
class GFG {
  
    // Main Method
    public static void Main()
    {
        // calling get() Method
        get('A');
        get('a');
        get('B');
        get('b');
    }
  
    // Defining get() method
    public static void get(char c)
    {
  
        // getting Unicode character
        // using ToLowerInvariant() Method
        char val = Char.ToLowerInvariant(c);
  
        // display the char value
        Console.WriteLine("The lowercase equivalent"+
                       " of the {0} is {1}", c, val);
    }
}

                    
Output:
The lowercase equivalent of the A is a
The lowercase equivalent of the a is a
The lowercase equivalent of the B is b
The lowercase equivalent of the b is b
Example 2:
// C# program to demonstrate
// Char.ToLowerInvariant()
// Method
using System;
  
class GFG {
  
    // Main Method
    public static void Main()
    {
        // declaring and initializing char variable
        char c = 'A';
  
        // getting Unicode character
        // using ToLowerInvariant() Method
        char val = Char.ToLowerInvariant(c);
  
        // display the char value
        Console.WriteLine("The lowercase equivalent"+
                       " of the {0} is {1}", c, val);
    }
}

                    
Output:
The lowercase equivalent of the A is a
Reference:

Last Updated : 19 Dec, 2019
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