using System;

​

interface IFile

{

    void ReadFile();

}

​

interface IBinaryFile

{

    void OpenBinaryFile();

    void ReadFile();

}

​

class FileInfo : IFile, IBinaryFile

{

    void IFile.ReadFile()

    {

        Console.WriteLine("Reading Text File");

    }

​

    void IBinaryFile.OpenBinaryFile()

    {

        Console.WriteLine("Opening Binary File");

    }

​

    void IBinaryFile.ReadFile()

    {

        Console.WriteLine("Reading Binary File");

    }

​

    public void Search(string text)

    {

        Console.WriteLine("Searching in File");

    }

}

​

public class Program

{

    public static void Main()

    {

        IFile file1 = new FileInfo();

        IBinaryFile file2 = new FileInfo();

        FileInfo file3 = new FileInfo();

        file1.ReadFile(); 

        //file1.OpenBinaryFile(); //compile-time error: can only access IFile members 

        //file1.CloseFile(); //compile-time error: can only access IFile members 

        file2.OpenBinaryFile();

        file2.ReadFile();

        //file2.CloseFile(); //compile-time error: can only access IBinaryFile members 

        file3.Search("text to be searched");

        //file3.ReadFile(); //compile-time error: can only access FileInfo members 

        //file3.OpenBinaryFile(); //compile-time error: can only access FileInfo members 

    }

}

​