How do I call a non-static method from a static method in C#?

I have the following code, I want to call data1() from data2(). Is this possible in C#? If so, how?

private void data1()
{
}
private static void data2()
{
   data1(); //generates error
}

Solution 1:

You'll need to create an instance of the class and invoke the method on it.

public class Foo
{
    public void Data1()
    {
    }

    public static void Data2()
    {
         Foo foo = new Foo();
         foo.Data1();
    }
}

Solution 2:

Perhaps what you are looking for is the Singleton pattern?

public class Singleton
{
    private Singleton() {}

    public void DoWork()
    { 
        // do something
    }

    // You can call this static method which calls the singleton instance method.
    public static void DoSomeWork()
    { 
        Instance.DoWork();
    }

    public static Singleton Instance
    {
        get { return instance; } 
    }

    private static Singleton instance = new Singleton();
}

You still have to create an instance of the class but you ensure there is only one instance.