Dictionary.Item [] सी # में संपत्ति

Dictionary.Item[] गुण C# में डिक्शनरी में निर्दिष्ट कुंजी से जुड़े मान को प्राप्त करने या सेट करने के लिए उपयोग किया जाता है।

सिंटैक्स

निम्नलिखित वाक्य रचना है -

public TValue this[TKey key] { get; set; }

उदाहरण

आइए अब Dictionary.Item[] प्रॉपर्टी -

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);
      }
      Console.WriteLine("Value for key three = "+dict["Three"]);
      dict["Three"] = "Ronaldo";
      Console.Write("Updated value associated with key Three...");
      Console.WriteLine(dict["Three"]);
      if (dict.ContainsValue("Angelina"))
         Console.WriteLine("\n\nValue found!");
      else
         Console.WriteLine("\n\nValue 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);
   }
}

आउटपुट

यह निम्नलिखित आउटपुट देगा -

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 for key three = Messi
Updated value associated with key Three...Ronaldo
Value isn't in the dictionary!
Cleared Key/value pairs...
Count of elements now = 0

उदाहरण

आइए अब Dictionary.Item[] पद्धति को लागू करने के लिए एक और उदाहरण देखें -

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);
      }
      Console.WriteLine("Value for key three = "+dict["Three"]);
      dict["Three"] = "Katie";
      Console.Write("Updated value associated with key Three...");
      Console.WriteLine(dict["Three"]);
   }
}

आउटपुट

यह निम्नलिखित आउटपुट देगा -

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 for key three = Messi
Updated value associated with key Three...Katie