C#-এ Dictionary.ContainsValue() মেথড

C#-এ Dictionary.ContainsValue() মেথডটি যাচাই করতে ব্যবহৃত হয় যে Dictionary<TKey,TValue>-এ একটি নির্দিষ্ট মান রয়েছে কিনা।

সিনট্যাক্স

public bool ContainsValue (TValue val);

উপরোক্তে, val হল অনুসন্ধান করার মান।

উদাহরণ ১

using System; 
using System.Collections.Generic; 
public class Demo { 
    public static void Main(){ 
        Dictionary<string, string> dict = new Dictionary<string, string>(); 
        dict.Add("One", "John"); 
        dict.Add("Two", "Tom"); 
        dict.Add("Three", "Jacob"); 
        dict.Add("Four", "Kevin"); 
        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("Kevin")) 
            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); 
    } 
}

আউটপুট

Count of elements = 5 
Key/value pairs... 
Key = One, Value = John 
Key = Two, Value = Tom 
Key = Three, Value = Jacob 
Key = Four, Value = Kevin 
Key = Five, Value = Nathan 
Value found! 
Cleared Key/value pairs... 
Count of elements now = 0

উদাহরণ ২

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); 
    } 
}

আউটপুট

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