Does C# support the use of static local variables?

Question

Related: How do I create a static local variable in Java?

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Pardon if this is a duplicate; I was pretty sure this would have been

Answer 1

Unfortunately, no. I really loved this possibility in C.

I have an idea what you could do.

Create a class that will provide access to instance-specific values, which will be preserved statically.

Something like this:

class MyStaticInt
{
    // Static storage
    private static Dictionary  staticData =
        new Dictionary  ();

    private string InstanceId
    {
        get
        {
            StackTrace st = new StackTrace ();
            StackFrame sf = st.GetFrame (2);
            MethodBase mb = sf.GetMethod ();

            return mb.DeclaringType.ToString () + "." + mb.Name;
        }
    }

    public int StaticValue
    {
        get { return staticData[InstanceId]; }

        set { staticData[InstanceId] = value; }
    }

    public MyStaticInt (int initializationValue)
    {
        if (!staticData.ContainsKey (InstanceId))
            staticData.Add (InstanceId, initializationValue);
    }
}

Can be used this way...

class Program
{
    static void Main (string[] args)
    {
        // Only one static variable is possible per Namespace.Class.Method scope
        MyStaticInt localStaticInt = new MyStaticInt (0);

        // Working with it
        localStaticInt.StaticValue = 5;
        int test = localStaticInt.StaticValue;
    }
}

It's not a perfect solution, but an interesting toy.

You can only have one static variable of this type per Namespace.Class.Method scope. Won't work in property methods - they all resolve to the same name - get_InstanceId.