Is it Possible Instantiate the Interface?

Posted by Satyadnet under C# on 4/24/2009 | Views : 15709 | Status : [Member] | Replies : 2

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Hi everyone,
Please let me know : Is it Possible Instantiate the Interface?

Thanks.

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Posted by: Vuyiswamb on: 4/27/2009 [Member] [MVP] [Administrator] NotApplicable

0	You Implement Interfaces. C# does not support multiple inheritance so we impement interfaces when we declare the class like this // C# public class BusinessAccountclass : IAccount, ICustomer, IPortfolio { // Code to implement class here. } IAccount and ICustomer are interfaces they are declared like this // C# public interface IAccount { void DeductFees(IFeeSchedule feeSchedule); void PostInterest(); decimal Balance { get; set; } } Thank you for Posting at DotnetFunda Vuyiswa Maseko Thank you for posting at Dotnetfunda [Administrator] Satyadnet, if this helps please login to Mark As Answer. \| Alert Moderator

You Implement Interfaces. C# does not support multiple inheritance so we impement interfaces when we declare the class like this


// C#

public class BusinessAccountclass  :  IAccount, ICustomer, IPortfolio

{

   // Code to implement class here.

}

IAccount and ICustomer are interfaces they are declared like this

// C#

public interface IAccount

{

   void DeductFees(IFeeSchedule feeSchedule);

   void PostInterest();

   decimal Balance 

   {

      get;

      set;

   }

}

Thank you for Posting at DotnetFunda

Vuyiswa Maseko

Thank you for posting at Dotnetfunda
[Administrator]

Satyadnet, if this helps please login to Mark As Answer. | Alert Moderator

Posted by: Rameshsree on: 4/28/2009 [Member] Starter

0	One can't instantiate an interface. One can get a reference to an interface. Let's say Class A implements interface iA then we can't instantiate IA like IA a = new IA() -- this gives compilation error. but we can get the referance to interface as below IA a = new A() Satyadnet, if this helps please login to Mark As Answer. \| Alert Moderator

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