c# dictionary get all keys code example

Example 1: c# dictionary get value by key

Dictionary<string, string> dict = new Dictionary<string, string>();
 dict.Add("UserID", "test");
 string userIDFromDictionaryByKey = dict["UserID"];

Example 2: linq get a dictionary key and value c#

var values = dictionary.Where(x => someKeys.Contains(x.Key)).Select(x => x.Value);
 var keys = dictionary.Where(x => someValues.Contains(x.Value)).Select(x => x.Key);