add a private static method to a class in csharp

To add a private static method to a class in C#, you can use the private and static access modifiers along with the method name and signature within the class.

Here's an example:

main.cs
public class MyClass
{
    private static void MyPrivateStaticMethod()
    {
        // implementation of the method goes here
    }
}
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In this example, MyPrivateStaticMethod() is a private static method declared within the MyClass class. The private access modifier ensures that it can only be accessed within that class, while the static keyword means that it can be called without an instance of the class.

To call this method from within the MyClass class, you can simply use its name like this:

main.cs
public class MyClass
{
    private static void MyPrivateStaticMethod()
    {
        // implementation of the method goes here
    }

    public void MyPublicMethod()
    {
        // calling the private method within the class
        MyPrivateStaticMethod();
    }
}
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In this case, the MyPublicMethod() is a public instance method that can be called from outside the class, and it is using the MyPrivateStaticMethod() internally within the MyClass class.