C# String CompareTo()

The C# CompareTo() method is used to compare String instance with a specified String object. It indicates whether this String instance precedes, follows, or appears in the same position in the sort order as the specified string or not.

Signature

public int CompareTo(String str)
public int CompareTo(Object)

Parameters

str: it is a string argument which is used to compare.

Return

It returns an integer value.

C# String CompareTo() Method Example

using System;  
    public class StringExample  
    {  
        public static void Main(string[] args)  
        {  
            string s1 = "hello";  
            string s2 = "hello";  
            string s3 = "csharp";
            Console.WriteLine(s1.CompareTo(s2)); 
            Console.WriteLine(s2.CompareTo(s3)); 
        }  
    }  

Output: