C# ToLower() মেথড

C#-এ String.ToLower() মেথড একটি স্ট্রিং-এর সব ক্যারেক্টারকে ছোট হাতের (lowercase) রূপান্তর করে একটি নতুন স্ট্রিং ফেরত দেয়।

সিনট্যাক্স

public string ToLower ();

উদাহরণ ১

using System;

public class Demo {
    public static void Main(String[] args) {
        string str1 = "WELCOME!";
        string str2 = "Thisisit!";
        char[] arr1 = str1.ToCharArray(3, 2);
        char[] arr2 = str2.ToCharArray(2, 2);

        Console.WriteLine("String1 = " + str1);
        Console.WriteLine("String1 ToLower = " + str1.ToLower());
        Console.WriteLine("String1 Substring from index4 = " + str1.Substring(4, 4));
        Console.Write("Character array...String1 =");
        for (int i = 0; i < arr1.Length; i++)
            Console.Write(" " + arr1[i]);

        Console.WriteLine("\n\nString2 = " + str2);
        Console.WriteLine("String2 ToLower = " + str2.ToLower());
        Console.WriteLine("String2 Substring from index2 = " + str2.Substring(0, 5));
        Console.Write("Character array...String2 =");
        for (int i = 0; i < arr2.Length; i++)
            Console.Write(" " + arr2[i]);
    }
}

আউটপুট

String1 = WELCOME!
String1 ToLower = welcome!
String1 Substring from index4 = OME!
Character array...String1 = C O

String2 = Thisisit!
String2 ToLower = thisisit!
String2 Substring from index2 = Thisi
Character array...String2 = i s

উদাহরণ ২

using System;
using System.Globalization;

public class Demo {
    public static void Main(String[] args) {
        string str1 = "ABCD!";
        string str2 = "@#$PQRSTUV!";
        Console.WriteLine("String1 = " + str1);
        Console.WriteLine("String1 ToLower = " + str1.ToLower(new CultureInfo("en-US", false)));
        Console.WriteLine("String1 Substring from index4 = " + str1.Substring(2, 2));
        Console.WriteLine("\n\nString2 = " + str2);
        Console.WriteLine("String2 ToLower = " + str2.ToLower(new CultureInfo("en-US", false)));
        Console.WriteLine("String2 Substring from index2 = " + str2.Substring(0, 5));
    }
}

আউটপুট

String1 = ABCD!
String1 ToLower = abcd!
String1 Substring from index4 = CD
String2 = @#$PQRSTUV!
String2 ToLower = @#$pqrstuv!
String2 Substring from index2 = @#$PQ