How Can I Simulate Global Variables in C#?

Mocking global variables in C#

Unlike other programming languages, C# does not support the declaration of global variables. However, there is a workaround to achieve similar functionality using static classes.

Create a global variable class

To mock global variables, create a static class called "Globals" that contains static members representing the required variables. For example:

<code class="language-csharp">public static class Globals
{
    public const Int32 BUFFER_SIZE = 512; // 不可修改
    public static String FILE_NAME = "Output.txt"; // 可修改
    public static readonly String CODE_PREFIX = "US-"; // 不可修改
}</code>

Use "const" and "readonly" to ensure that certain variables are unmodifiable.

Access global variables

To access these global variables, use the class name followed by the variable name:

<code class="language-csharp">String code = Globals.CODE_PREFIX + value.ToString();</code>

This allows you to use these variables anywhere in the same namespace.

Handling different namespaces

If you need to access global variables in different namespaces, you have two options:

1. Declare the "Globals" class outside any namespace (in the global application namespace).
2. Add correct "using" directive to retrieve variables from another namespace.

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