在C#中初始化IEnumerable <string>

IEnumerable<string> strings = new string[] {"string1", "string2", "string3"};

IEnumerable<string> strings = new List<string> { "string1", "string2", "string3" };

IEnumerable<string> strings = Enumerable.Range(1, 3).Select(i => "string" + i).ToEnumerable();

IEnumerable<string> strings = new HashSet<string> { "string1", "string2", "string3" };

IEnumerable<string> strings = new Dictionary<string, string> { { "key1", "string1" }, { "key2", "string2" }, { "key3", "string3" } }.Keys;