C# में Dictionary.Keys प्रॉपर्टी

C# में Dictionary.Keys प्रॉपर्टी का उपयोग Dictionary में सभी कुंजियों को प्राप्त करने के लिए किया जाता है।

सिंटैक्स

निम्नलिखित सिंटैक्स है:

public System.Collections.Generic.Dictionary<TKey, TValue>.KeyCollection Keys { get; }

उदाहरण

आइए अब Dictionary.Keys प्रॉपर्टी को लागू करने का एक 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", "Kagido"); 
        dict.Add("Two", "Ngidi"); 
        dict.Add("Three", "Devillers"); 
        dict.Add("Four", "Smith"); 
        dict.Add("Five", "Warner"); 
        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.Write("\nAll the keys..\n"); 
        Dictionary<string, string>.KeyCollection allKeys = dict.Keys; 
        foreach(string str in allKeys){ 
            Console.WriteLine("Key = {0}", str); 
        } 
    } 
}

आउटपुट

यह निम्नलिखित आउटपुट उत्पन्न करेगा:

Count of elements = 5 
Key/value pairs... 
Key = One, Value = Kagido 
Key = Two, Value = Ngidi 
Key = Three, Value = Devillers 
Key = Four, Value = Smith 
Key = Five, Value = Warner 
All the keys.. 
Key = One 
Key = Two 
Key = Three 
Key = Four 
Key = Five

उदाहरण

आइए अब Dictionary.Keys प्रॉपर्टी को लागू करने का 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.WriteLine("Updated value associated with key Three..."); 
        Console.WriteLine(dict["Three"]); 
        Console.Write("\nAll the keys..\n"); 
        Dictionary<string, string>.KeyCollection allKeys = dict.Keys; 
        foreach(string str in allKeys){ 
            Console.WriteLine("Key = {0}", str); 
        } 
    } 
}

आउटपुट

यह निम्नलिखित आउटपुट उत्पन्न करेगा:

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 
All the keys.. 
Key = One 
Key = Two 
Key = Three 
Key = Four 
Key = Five