CODEWITHSUNDEEP
c#dictionary
Pr.Dumbledor
Pr.Dumbledor

Reputation: 646

cannot convert from Dictionary to IDictionary

I'm trying to create interface with method

void Import(int id, IDictionary<int, IDictionary<int, string>> items);

then call this method like

Dictionary<int, Dictionary<int, string>> items = viewModel.Items
  .GroupBy(t => t.Number)
  .ToDictionary(t => t.Key, t => t.ToDictionary(x => x.LanguageId, x => x.Translation));


Import(id, items);

I expected that it should works but got an error

cannot convert from 'System.Collections.Generic.Dictionary<int, System.Collections.Generic.Dictionary<int, string>>' to 'System.Collections.Generic.IDictionary<int, System.Collections.Generic.IDictionary<int, string>>'

Why I can't use interface IDictionary here? Should I cast manually?

Upvotes: 2

Views: 5309

Answers (1)

Igor
Igor

Reputation: 62213

Change your assigning type.

Dictionary<int, IDictionary<int, string>> items = viewModel.Items
  .GroupBy(t => t.Number)
  .ToDictionary(t => t.Key, t => (IDictionary<int, string>) t.ToDictionary(x => x.LanguageId, x => x.Translation));

Upvotes: 5

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