Question

I have a bool variable and a Dictionary.
if it is true I have to increase value of my dictionary by 1 at a specified Key.

My Code :

 private void Process(Person person)
 {
     isSendMailSuccessful = true;

     if (isSendMailSuccessful)
     {
         MyDictionary.Where(i => i.Key == person.personID);
         // I need to increase Value of that ID by 1
     }
 }

Answer 1

Why are you using LINQ fot this, and not just the Indexer of the Dictionary?

Something like

MyDictionary[person.personID] += 1;