Question

I have a rather large open source class that I need to convert from static to non-static.

The reason I need to do this is to make it thread safe; I want one copy of the class per thread.

In general, what are the recommended steps to convert a C# library from static to non-static?

Answer 1

I have upgraded Data Layer from static to no static class. So

1st : remove “static” keyword on class and method

2nd : Add in your old static class a Singleton as well

public class Foo 
{

    #region Singleton

    Foo()
    {
    }

    public static Foo Instance
    {
        get
        {
            return Nested.instance;
        }
    }

    class Nested
    {
        static Nested() { }

        internal static readonly Foo instance = new Foo();
    }

    #endregion

3rd : Replace in each call for your class by Foo.Instance.DoSomething() instead Foo.DoSomething()

4th : Compile and profit