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C# String IsInterned() method

C# String IsInterned() method for beginners and professionals with examples on overloading, method overriding, inheritance, aggregation, base, polymorphism, sealed, abstract, interface, namespaces, exception handling, file io, collections, multithreading, reflection etc.

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C# String IsInterned()

The C# IsInterned() method is used to get reference of the specified string.

The difference between Intern() and IsInterned() is that Intern() method interns the string if it is not interned but IsInterned() doesn't do so. In such case, IsInterned() method returns null.

Signature

public static string IsInterned(String str)

Parameter

str: it is a string type parameter.

Return

It returns a reference.

C# String IsInterned() Method Example

using System; 
		
    public class StringExample  
    {  
        public static void Main(string[] args)  
        {  
          string s1 = "Hello C#";
           string s2 = string.Intern(s1);  
           string s3 = string.IsInterned(s1);
           Console.WriteLine(s1);
           Console.WriteLine(s2);
           Console.WriteLine(s3);
         }  
     }

Output:

Hello C#
Hello C#
Hello C#

C# String Intern() vs IsInterned() Example

using System; 
		
    public class StringExample  
    {  
      public static void Main(string[] args)  
      {  
        string a = new string(new[] {'a'});
        string b = new string(new[] {'b'});

        string.Intern(a); // Interns it
        Console.WriteLine(string.IsInterned(a) != null);//True

        string.IsInterned(b); // Doesn't intern it
        Console.WriteLine(string.IsInterned(b) != null);//False
       }  
     }

Output:

True
False
Next TopicC# String IsNormalized()




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