Question

How do I declare global variables in Visual C#?

Answer 1

How about this

public static class Globals {
    public static int GlobalInt { get; set; }
}

Just be aware this isn t thread safe. Access like Globals.GlobalInt

This is probably another discussion, but in general globals aren t really needed in traditional OO development. I would take a step back and look at why you think you need a global variable. There might be a better design.

Answer 2

A public static field is probably the closest you will get to a global variable

public static class Globals
{
  public static int MyGlobalVar = 42;
}

However, you should try to avoid using global variables as much as possible as it will complicate your program and make things like automated testing harder to achieve.

Answer 3

Use the const keyword:

public const int MAXIMUM_CACHE_SIZE = 100;

Put it in a static class eg

public class Globals
{
    public const int MAXIMUM_CACHE_SIZE = 100;
}

And you have a global variable class :)

Answer 4

The nearest you can do this in C# is to declare a public variable in a public static class. But even then, you have to ensure the namespace is imported, and you specify the class name when using it.

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