Dictionaries are used in C# to define key value pairs. They are part of System.Collections.Generic.
The format is:
Dictionary<key,value>
To define a dictionary, use the format:
Dictionary<datatype, datatype> d = new Dictionary<datatype, datatype>();
For example:
Dictionary<int, int> d = new Dictionary<int, int>();
or
Dictionary<string, int> d = new Dictionary<string, int>();
To add to the data type, you can do either:
Dictionary<string, int> d1 = new Dictionary<string, int>();
d1.Add("Bob", 12345);
or
d[3] = 30;
From there, you can use different methods on the dictionary such as ContainsKey, ContainsValue:
if (d.ContainsKey(2))
{
Console.WriteLine(d[2]);
}
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