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c#model-view-controllermodel

Fill dictionary with values from list

I have a list generated from LINQ query. An example of this list is the following

ID = 1, CODE = 2
ID = 1, CODE = 3
ID = 1  CODE = 4
....

I would like to fill a dictionary with these values to have the key of my dictionary equals to id of my list and the value like the code of my list

Wxample what I want is

myDict = 1 : {2,3,4}

Is it possible?

Thank you in advance!

Solution

  • You can use GroupBy:

    Dictionary<int, List<int>> myDict = list
    .GroupBy(x => x.ID)
    .ToDictionary(g => g.Key, g => g.Select(x => x.CODE).ToList());