Sujets C# importants

IDisposable and Using

Managed memory is reclaimed automatically, but files, sockets, and similar resources should be disposed promptly.

How it works

Release resources deterministically with using declarations.

The using declaration guarantees Dispose runs at the end of the scope, including when an exception occurs.

Runnable C# example

Program.cs

using System;
using System.IO;

class Program
{
    static void Main()
    {
        using var writer = new StringWriter();
        writer.Write("resource-safe output");
        Console.WriteLine(writer.ToString());
    }
}

Expected output

resource-safe output

Practice with the debugger

Set a breakpoint on an important assignment or condition, click Debug, and inspect the local values before stepping to the next line.