Check if KeyValuePair exists with LINQ's FirstOrDefault

Question

I have a dictionary of type

Dictionary

I want to return the first instance where a condition is met using

var         


        

Answer 1

A way to check against the default value of a struct such as KeyValuePair without specifying the type is to create a new instance using Activator:

if (available.Equals(Activator.CreateInstance(available.GetType())))
{
    Console.WriteLine("Not Found!");
}