System Namespace | Microsoft Learn
To access types in the System namespace from C# code without having to provide fully qualified type names, include the using System; statement at the beginning of your source code file.
What does "using System" mean in C#? - Stack Overflow
May 22, 2021 · The using System line means that you are using the System library in your project. Which gives you some useful classes like Console or functions/methods like WriteLine.
C# - System (using System namespace) - Dot Net Perls
Dec 24, 2024 · System can be understood as a commonly-used subset of framework types. It includes types that are mapped to by the aliased keywords in the C# language such as int.
C# using (With Examples) - Programiz
We use the C# using to import external resources inside a program. In this tutorial, we will learn about using and using static with the help of examples.
Why we use using System; in C# - Medium
Feb 5, 2025 · In C#, using System; is used to import the System namespace, which contains fundamental classes and base functionalities that are essential for most C# programs.
Understanding C# Using System Namespace - Web Dev Tutor
Aug 20, 2024 · The using System statement in C# is used to include the System namespace, which is a fundamental namespace in the .NET framework. This namespace contains essential classes and …
Why is "using System;" not considered bad practice?
Feb 4, 2020 · Regardless of how many people use an IDE to develop in C++, it is not designed with that use case as an overwhelming concern. Namespaces appear to be much more "fine granular" in C# …
C# System (using System namespace) - The Developer Blog
System can be understood as a commonly-used subset of framework types. It includes types that are mapped to by the aliased keywords in the C# language such as int.
C# - using Keyword - Dot Net Perls
Jun 17, 2025 · Most C# files use the using -keyword. The using -statement is combined with a type that implements the IDisposable interface. Things like StreamReader or StreamWriter implement …
Using System. Continued from Variables and Constants - Medium
The using System directive is used to indicate that your program will be using types (classes, structs, interfaces, etc.) that are defined in the System namespace.