C# — Need an IDictionary implementation that will allow a null key

Question

Basically, I want something like this:

Dictionary dict = new Dictionary();
dict.Add(null, \"Nothing\");
dict.Add(         


        

Answer 1

Does the key literally need to be NULL? The key in the collection works out to be an index. It doesn't make a lot of sense to me to have NULL for an index in a collection.

Maybe create a new class

public class ObjectEntry
{
    public object objRef;
    public string desc;

    public ObjectEntry(object objectReference)
    {
        objRef = objectReference;
        if (objRef = null) {desc = "Nothing";}
        else {desc = objRef.Description;} //or whatever info you can get from a proper objRef value
    }
}

newObj = new ObjectEntry(null);
dict.add(newObj, newObj.desc);