ContainsKey ExamplesΒΆ

Determines if dictionary contains specific key element. Returns a bool.

Example

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Dictionary<string, int> moons = new Dictionary<string, int>();
   moons.Add("Mercury", 0);
   moons.Add("Venus", 0);
   moons.Add("Earth", 1);
   moons.Add("Mars", 2);
   moons.Add("Jupiter", 79);
   moons.Add("Saturn", 82);
   moons.Add("Uranus", 27);
   moons.Add("Neptune", 14);


Console.WriteLine(moons.ContainsKey("Pluto"));
     Console.WriteLine(moons.ContainsKey("Earth"));

Output

False
True