Search⌘ K
AI Features
Home
Courses
Mastering C# for .NET Developers

Automatic Disposing

Explore how to implement automatic resource management in C# by using the using statement and IDisposable interface. Understand synchronous and asynchronous disposal patterns that ensure unmanaged resources are released safely, even when exceptions occur. This lesson helps you write cleaner, safer code with less manual cleanup and improved resource handling.

We'll cover the following...

To robustly call the Dispose method, we enclose resource usage within a try and finally block.

Course? course = null;
try
{
    course = new Course { Title = ".NET Fundamentals" };
}
finally
{
    course?.Dispose();
}
Manual disposal using try and finally blocks

Here, we instantiate an object, execute our logic, and ensure the Dispose method runs regardless of exceptions.

Managing multiple unmanaged resources can quickly clutter code with nested try and finally blocks. There is a better approach.

The using construct

C# syntax allows us to replace the try and finally blocks used with objects that implement the IDisposable interface, making our code much more concise. When working with such objects, we can use the using construct:

using (var course = new Course { Title = ".NET Fundamentals" })
{
    // Use the object
} // Dispose() is called automatically when this ending curly brace is reached
Syntax of the using construct

  • Line 1: We declare and instantiate the disposable object inside the using statement.

  • Line 4: We reach the end of the block, triggering the automatic disposal of the object.

The using construct wraps a block of code that creates an object of a type implementing the IDisposable interface. The ...