How Do Static Methods and Classes Work in C#?

In -depth understanding of the static method in C#

In C#, static method is a special function that runs independently in any class of instances. By using the "static" keywords, the static method can be called without creating an object. This is usually used for practical programs or auxiliary functions that do not need to rely on the state of a specific object.

For example, consider the following static methods:

To call this method, just call the method name directly, without the need to initialize the instance:

<code class="language-csharp">public static void 执行操作()
{
    // 执行某个操作
}</code>

Static class and its importance

<code class="language-csharp">执行操作();</code>

Not only can a single method be declared as static, but the entire class can be declared as static. Static classes cannot be instantiated and only contain static members. In essence, it acts as a static method and variable container.

For example:

To use the static method in , you can directly access it through the class name:

<code class="language-csharp">class 某个类
{
    public static int 静态方法()
    {
        return 42;
    }
}</code>

The advantages and use cases of static methods and classes

某个类

The use of static methods and classes in C#has the following advantages:

<code class="language-csharp">某个类.静态方法(); // 将返回 42</code>

Flexible: Static method can easily call any position in the code without creating instances.

Performance:

Static methods do not need to allocate memory for a single object, which may improve the performance of memory sensitive applications.

• Packaging: Static class provides a method of combining related static methods and attributes into a single logic unit.
• These characteristics make static methods and classes apply to various scenarios, such as creating practical program functions, managing global variables, and implementing single -case design patterns.

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