FoxLearn | How to

Enum Generic Type Constraint in C#

By Tan Lee Published on Feb 04, 2025 792

In this post, let's look at how we can use Enum as a generic type constraint in C#. This feature was introduced in C# 7.3 and allows you to enforce that a type parameter is an enum, providing compile-time safety for your generic methods.

How to use Parallel.For and Parallel.ForEach in C#

By Tan Lee Published on Jan 06, 2025 1.49K

Parallel programming in .NET enables more efficient utilization of system resources and provides greater control over program execution.

How to check if a directory is empty in C#

By Tan Lee Published on Dec 25, 2024 1.62K

In C#, there are a couple of straightforward ways to determine whether a directory is empty.

How to Append a file in C#

By Tan Lee Published on Jun 25, 2024 1.04K

Appending data to a file in C# can be done using various methods provided by the .NET framework.

How to convert string to hex in C#

By Tan Lee Published on Nov 26, 2024 2.34K

To convert a string to its hexadecimal representation in C#, you can use the following method.

How to Convert a string to a double in C#

By Tan Lee Published on Feb 04, 2025 970

There are three common ways to convert a string to a double:

How to get project file path in C#

By Tan Lee Published on Nov 13, 2024 3.4K

In C#, you can get the project file path in different ways.

How to read XML in C#

By Tan Lee Published on Jan 17, 2025 1.31K

Parsing XML in C# can be done using several approaches, each suitable for different scenarios depending on the complexity of the XML structure and performance requirements.

How to compress and decompress strings in C#

By Tan Lee Published on Dec 30, 2024 765

Compressing string data using compression algorithms like GZip and Brotli can help reduce memory payload and improve application performance.

How to restart program in C#

By Tan Lee Published on Nov 10, 2024 1.21K

To restart a program in C#, you can achieve it by launching a new instance of the program and exiting the current instance.

Auth with multiple Identity Providers in ASP.NET Core

By Tan Lee Published on Mar 03, 2025 769

To authenticate with multiple identity providers in ASP.NET Core, you can configure different authentication schemes for each identity provider (such as Auth0, Azure AD, or OpenIddict) and handle token validation accordingly.

How to Implement Phone verification, 2FA using ASP.NET Core

By Tan Lee Published on Mar 03, 2025 383

To implement phone verification and Two-Factor Authentication (2FA) using ASP.NET Core, we can extend ASP.NET Core Identity and use an SMS provider to send verification codes.

How To