Dictionary search with Linq

Question

we can search dictionary like

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var dictionary = new Dictionary<string,string>();
dictionary.Keys.Where( key => key.Contains("a")).ToList();

but it return list. i want that linq should return true or false. so what would be the right code that search dictionary with linq. please guide.

Answer 1

Use Any instead of Where:

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dictionary.Keys.Any( key => key.Contains("a"));