Updating fields of values in a ConcurrentDictionary

Question

I am trying to update entries in a ConcurrentDictionary something like this:

class Class1
{
    public int Counter { get; set; }
}

class Test
{
    private          


        

Answer 1

You can use the AddOrUpdate function.

Here is how you can increment the current value by 1:

dict.AddOrUpdate(key, 1, (key, oldValue) => oldValue + 1);