C＃のOrderedDictionaryに含まれるキーと値のペアの数を取得します

OrderedDictionaryに含まれるキーと値のペアの数を取得するには、コードは次のとおりです-

例

using System;
using System.Collections;
using System.Collections.Specialized;
public class Demo {
   public static void Main(){
      OrderedDictionary dict = new OrderedDictionary();
      dict.Add("A", "Home Appliances");
      dict.Add("B", "Electronics");
      dict.Add("C", "Smart Wearables");
      dict.Add("D", "Pet Supplies");
      dict.Add("E", "Clothing");
      dict.Add("F", "Footwear");
      Console.WriteLine("OrderedDictionary elements...");
      foreach(DictionaryEntry d in dict){
         Console.WriteLine(d.Key + " " + d.Value);
      }
      Console.WriteLine("Count of elements in OrderedDictionary = " + dict.Count);
      dict.Clear();
      Console.WriteLine("Count of elements in OrderedDictionary (Updated)= " + dict.Count);
   }
}

出力

これにより、次の出力が生成されます-

OrderedDictionary elements...
A Home Appliances
B Electronics
C Smart Wearables
D Pet Supplies
E Clothing
F Footwear
Count of elements in OrderedDictionary = 6
Count of elements in OrderedDictionary (Updated)= 0

例

別の例を見てみましょう-

using System;
using System.Collections;
using System.Collections.Specialized;
public class Demo {
   public static void Main(){
      OrderedDictionary dict1 = new OrderedDictionary();
      dict1.Add("A", "John");
      dict1.Add("B", "Andy");
      dict1.Add("C", "Jacob");
      dict1.Add("D", "Kevin");
      dict1.Add("E", "Gary");
      dict1.Add("F", "Nathan");
      dict1.Add("G", "Kevin");
      dict1.Add("H", "Ryan");
      Console.WriteLine("OrderedDictionary1 elements...");
      foreach(DictionaryEntry d in dict1){
         Console.WriteLine(d.Key + " " + d.Value);
      }
      Console.WriteLine("Count of key-value pairs in OrderedDictionary1 = " + dict1.Count);
      OrderedDictionary dict2 = new OrderedDictionary();
      dict2.Add("1", "One");
      dict2.Add("2", "Two");
      dict2.Add("3", "Three");
      dict2.Add("4", "Four");
      dict2.Add("5", "Five");
      dict2.Add("6", "Six");
      Console.WriteLine("\nOrderedDictionary2 elements...");
      foreach(DictionaryEntry d in dict2){
         Console.WriteLine(d.Key + " " + d.Value);
      }
      Console.WriteLine("Count of key-value pairs in OrderedDictionary2 = " + dict2.Count);
      Console.WriteLine("\nIs OrderedDictionary1 equal to OrderedDictionary2? = "+(dict1.Equals(dict2)));
      OrderedDictionary orderedDict = dict2.AsReadOnly();
      Console.WriteLine("Is OrderedDictionary read-only? = "+orderedDict.IsReadOnly);
   }
}

出力

これにより、次の出力が生成されます-

OrderedDictionary1 elements...
A John
B Andy
C Jacob
D Kevin
E Gary
F Nathan
G Kevin
H Ryan
Count of key-value pairs in OrderedDictionary1 = 8 

OrderedDictionary2 elements...
1 One
2 Two
3 Three
4 Four
5 Five
6 Six
Count of key-value pairs in OrderedDictionary2 = 6

Is OrderedDictionary1 equal to OrderedDictionary2? = False
Is OrderedDictionary read-only? = True