C# Feature - using statements

Overview

The using statement wraps an IDisposable resource in a block and guarantees that Dispose() runs when the block exits.

C# 1.0 (2002)

var reader = File.OpenText(path);
string text = reader.ReadToEnd();
reader.Dispose();

using (var reader = File.OpenText(path))
{
  string text = reader.ReadToEnd();
}

using (SqlConnection connection = new(connectionString))
{
  connection.Open();
  // Execute commands here.
}