เพื่อให้ได้จำนวนคู่คีย์/ค่าในพจนานุกรม โค้ดจะเป็นดังนี้ -
ตัวอย่าง
using System; using System.Collections.Generic; public class Demo { public static void Main(){ Dictionary<string, string> dict = new Dictionary<string, string>(); dict.Add("One", "Chris"); dict.Add("Two", "Steve"); dict.Add("Three", "Messi"); dict.Add("Four", "Ryan"); dict.Add("Five", "Nathan"); Console.WriteLine("Count of elements = "+dict.Count); Console.WriteLine("\nKey/value pairs..."); foreach(KeyValuePair<string, string> res in dict){ Console.WriteLine("Key = {0}, Value = {1}", res.Key, res.Value); } if (dict.ContainsValue("Angelina")) Console.WriteLine("Value found!"); else Console.WriteLine("Value isn't in the dictionary!"); dict.Clear(); Console.WriteLine("Cleared Key/value pairs..."); foreach(KeyValuePair<string, string> res in dict){ Console.WriteLine("Key = {0}, Value = {1}", res.Key, res.Value); } Console.WriteLine("Count of elements now = "+dict.Count); } }
ผลลัพธ์
สิ่งนี้จะสร้างผลลัพธ์ต่อไปนี้ -
Count of elements = 5 Key/value pairs... Key = One, Value = Chris Key = Two, Value = Steve Key = Three, Value = Messi Key = Four, Value = Ryan Key = Five, Value = Nathan Value isn't in the dictionary! Cleared Key/value pairs... Count of elements now = 0
ตัวอย่าง
เรามาดูตัวอย่างอื่นกัน −
using System; using System.Collections.Generic; public class Demo { public static void Main(){ Dictionary<string, string> dict = new Dictionary<string, string>(); dict.Add("One", "David"); dict.Add("Two", "Brian"); dict.Add("Three", "Paul"); dict.Add("Four", "Ryan"); dict.Add("Five", "Nathan"); Console.WriteLine("Count of elements = "+dict.Count); } }
ผลลัพธ์
สิ่งนี้จะสร้างผลลัพธ์ต่อไปนี้ -
Count of elements = 5