Convert IDictionary to Dictionary

Question

I have to convert System.Collections.Generic.IDictionary<string, decimal> to System.Collections.Generic.Dictionary<string, decimal>, and i can't. I tried the ToDictionary method and can't specify right arguments.

I've tried the following:

// my dictionary is PlannedSurfaces (of type IDictionary<string, decimal>)
blabla.ToDictionary<string, decimal>(localConstruction.PlannedSurfaces) 

Answer 1

var newDict = new Dictionary<string, decimal>(oldDictionary)

Answer 2

or in linq

var castedDico = dictionary.ToDictionary(kvp => kvp.Key, kvp => kvp.Value);