Services
Technology Web App Development Mobile App Development Windows App Development Database Development UI/UX Development Cloud Development SEO Digital Marketing Guest Posting Content Writing Artificial Intelligence Data Science ERP Development CRM Development CMS Development LMS Development Business Listing Blockchain Technology Startup Promotion AI Tools Integration
Products
Data Converter Cleaner TUC - Unit Converter Import Export Survey Manager Tweet Controller
Developer
Article Blog Forum Interview Beginner News Startup Quiz
Users
Career
Apply Job Internship
Pricing
Login Sign Up Get a Quote

interview

Home Interviews What is the difference between 'String' and 'string' in C#? – MindStick
Ask Question

1 Answers

Ravi Vishwakarma
Ravi Vishwakarma 11 Jun 2024
Report Abuse

String (with capital 'S'):

  • 'String' refers to the .NET Framework class representing a string of characters. It's part of the System namespace: System.String.
  • As a class, 'String' provides various methods and properties for working with strings, such as Substring(), Length, IndexOf(), etc.
  • It's generally used when referring to the class itself or when you need to specify the type explicitly.

string (with lowercase 's'):

  • 'string' is a C# keyword and an alias for the 'String' class. It's used to declare variables that hold string data.
  • It's commonly used when declaring variables, parameters, or return types dealing with string data.
  • Since C# is case-sensitive, 'string' is not interchangeable with 'String' when specifying types. It's purely a syntactical difference.

Here's an example demonstrating the use of 'String' and 'string':

using System;
namespace ConsoleApp1
{
    class Program
    {
        static void Main()
        {
            String str1 = "Hello";  // Using String class explicitly
            string str2 = "World";  // Using string keyword

            // Both variables hold the same type of data
            Console.WriteLine(str1);  // Output: Hello
            Console.WriteLine(str2);  // Output: World
        }
    }
}

In practice, you'll often see 'string' used for variable declarations and 'String' used when referring to the class itself or when explicit type specification is necessary. However, both refer to the same string data type in C#.

advertising
Markdown for AI

A clean, structured version of this page for AI assistants and LLMs.

Open .md