Pl Correct it one class,one interface in interface concept

Question

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace Class_with_Interface

{

class Program

{

class Employee

{

int EmpId;

string EmpName;

int Sal;

public void EmployeeDetails()

{

Console.WriteLine("Enter Employee Details... Employee Id,Employee Name,Salary");

EmpId = Convert.ToInt32(Console.ReadLine());

EmpName = Console.ReadLine();

Sal = Convert.ToInt32(Console.ReadLine());

}

public void DisplayEmployeeDetails()

{

Console.WriteLine("Display Employee Details : ");

Console.WriteLine("Employee Id "+EmpId);

Console.WriteLine("Employee Name "+EmpName);

Console.WriteLine("Salary is "+Sal);

Console.ReadLine();

}

}

interface iEmployee

{

void AcceptDepartment();

void DisplayDepartment();

}

class DEmployee : Employee,iEmployee

{

int DeptId;

string DepartmentName;

string EmpName;

public void AcceptDepartment()

{

Console.WriteLine("Enter Department Details...DeptId,DeptName,EmpName");

DeptId = Convert.ToInt32(Console.ReadLine());

DepartmentName = Console.ReadLine();

EmpName = Console.ReadLine();

}

public void DisplayDepartment()

{

Console.WriteLine("Display Department : ");

Console.WriteLine("Dept Id"+DeptId);

Console.WriteLine("Dept Name" +DepartmentName);

Console.WriteLine("Employee Name" +EmpName);

Console.ReadLine();

}

}

interface MInterface :iEmployee

{

void AcceptStudent();

}

interface MInterface1:MInterface

{

void DisplayStudent();

}

class Sample : MInterface1

{

int sid;

string sname;

string sclass;

public void AcceptStudent()

{

Console.WriteLine("Enter Student Details..Sid,SName,SClass");

sid = Convert.ToInt32(Console.ReadLine());

sname = Console.ReadLine();

sclass = Console.ReadLine();

}

public void DisplayStudent()

{

Console.WriteLine("Display Student Details...");

Console.WriteLine("Student Id : " + sid);

Console.WriteLine("Student Name : " + sname);

Console.WriteLine("Student Class : " + sclass);

}

}

static void Main(string[] args)

{

Sample x = new Sample();

x.AcceptStudent();

x.DisplayStudent();

Console.ReadLine();

}

}

}