Linq select to new object

Question

I have a linq query

var x = (from t in types select t).GroupBy(g =>g.Type)

which groups objects by their type, as a result I want to ha

Answer 1

If you want to be able to perform a lookup on each type to get its frequency then you will need to transform the enumeration into a dictionary.

var types = new[] {typeof(string), typeof(string), typeof(int)};
var x = types
        .GroupBy(type => type)
        .ToDictionary(g => g.Key, g => g.Count());
foreach (var kvp in x) {
    Console.WriteLine("Type {0}, Count {1}", kvp.Key, kvp.Value);
}
Console.WriteLine("string has a count of {0}", x[typeof(string)]);