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
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

forum

home / developersection / forums / what is the using statement used for?
Ask Question

What is the using statement used for?

Anubhav Sharma 288 19 Jun 2025

What is the using statement used for, explain with example?

c# c#
Updated 23 Jun 2025
Anubhav Sharma
Anubhav Sharma

Student

The Anubhav portal was launched in March 2015 at the behest of the Hon'ble Prime Minister for retiring government officials to leave a record of their experiences while in Govt service .

Message

1 Answers

Ravi Vishwakarma
Ravi Vishwakarma 23 Jun 2025
Report Abuse

The using statement in C# is used for automatically managing the lifetime of disposable resources—typically unmanaged resources like files, database connections, streams, etc.

Purpose:

The using statement ensures that the object’s Dispose() method is called automatically, even if an exception occurs. This helps:

  • Prevent memory leaks.
  • Release file handles or DB connections properly.
  • Keep resource management safe and concise.

Syntax:

using (var resource = new SomeDisposableResource())
{
    // Use the resource
}
// resource.Dispose() is called automatically here

Applies to:

Any class that implements the IDisposable interface, such as:

  • StreamReader, FileStream, SqlConnection
  • XmlWriter, MemoryStream, HttpClient

Example:

using (var file = new StreamReader("file.txt"))
{
    string content = file.ReadToEnd();
}
// StreamReader.Dispose() is automatically called here

C# 8.0+:

In newer versions of C#, you can use a using declaration:

using var file = new StreamReader("file.txt");
// No need for braces; file is disposed at the end of the scope
advertising