Best way to handle a KeyNotFoundException

Question

I am using a dictionary to perform lookups for a program I am working on. I run a bunch of keys through the dictionary, and I expect some keys to not have a value. I catch the

Answer 1

Use Dictionary.TryGetValue instead:

Dictionary dictionary = new Dictionary();
int key = 0;
dictionary[key] = "Yes";

string value;
if (dictionary.TryGetValue(key, out value))
{
    Console.WriteLine("Fetched value: {0}", value);
}
else
{
    Console.WriteLine("No such key: {0}", key);
}