---
title: "How does .NET Core handle asynchronous programming using async/await?"  
description: "How does .NET Core handle asynchronous programming using async/await?"  
author: "Utpal Vishwas"  
published: 2023-06-25  
updated: 2023-11-18  
canonical: https://www.mindstick.com/forum/158851/how-does-dot-net-core-handle-asynchronous-programming-using-async-await  
category: ".net core"  
tags: ["asp.net", "asp.net core", ".net core"]  
reading_time: 3 minutes  

---

# How does .NET Core handle asynchronous programming using async/await?

How does .NET Core [handle](https://www.mindstick.com/articles/311004/suede-skillet-handle-cover) [asynchronous programming](https://www.mindstick.com/articles/338169/exploring-the-power-of-asynchronous-programming-in-c-sharp) using [async](https://www.mindstick.com/forum/23036/calling-an-activity-class-from-async-class)/[await](https://www.mindstick.com/blog/304336/asynchronous-programming-with-async-await-task-in-c-sharp)?

## Replies

### Reply by Aryan Kumar

In .NET Core, [asynchronous](https://www.mindstick.com/blog/178/synchronous-and-asynchronous-command-execution-in-c-sharp-dot-net) [programming](https://www.mindstick.com/articles/12214/web-development-company-in-india-laid-on-the-foundation-of-concrete-java-programming) is achieved through the use of **async** and **await** keywords. The **async** and **await** pattern simplifies the development of asynchronous code by allowing developers to write asynchronous code in a more synchronous style, making it easier to read and maintain.

Here's an overview of how .NET Core handles asynchronous programming using **async** and **await**:

## Async and Await Keywords:

- The **async** and **await** keywords were introduced in C# 5.0 and are fundamental to asynchronous programming in .NET. They enable developers to write asynchronous code in a way that resembles synchronous code.

## Asynchronous Methods:

- An asynchronous method is declared using the **async** keyword. It returns a **Task** or **Task<T>** representing the ongoing operation. The **async** modifier allows the method to use the **await** keyword.

## Await Keyword:

- The **await** keyword is used inside an **async** method to await the completion of an asynchronous operation. It allows the thread to be released to perform other work while waiting for the asynchronous operation to complete.

## Concurrency without Blocking:

- Asynchronous programming allows multiple operations to run concurrently without blocking the main thread. When an **await** statement is encountered, the method returns control to the calling code, allowing other work to be performed until the awaited operation completes.

## Task-Based Asynchronous Pattern (TAP):

- .NET Core follows the Task-Based Asynchronous Pattern (TAP), where asynchronous operations return **Task** or **Task<T>** objects. These objects represent the ongoing operation and can be awaited for completion.

## Async/Await for I/O Operations:

- Asynchronous programming is particularly useful for I/O-bound operations, such as reading from or writing to files, making network requests, or accessing a database. It helps prevent blocking the main thread while waiting for these operations to complete.

## Exception Handling:

- Exception handling in asynchronous code is straightforward. Exceptions thrown during the asynchronous operation are automatically propagated, and you can use standard try/catch blocks to handle them.

## Task Continuations:

- Asynchronous code allows the use of task continuations using the **ContinueWith** method or by chaining **await** statements. This enables developers to specify additional actions to be executed after the asynchronous operation completes.

Overall, the **async** and **await** pattern in .NET Core provides a convenient and readable way to write asynchronous code, making it easier for developers to work with concurrent and non-blocking operations. This approach enhances the responsiveness and scalability of applications, especially in scenarios involving I/O-bound or asynchronous operations.


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