Migration Exception Unhandled in Entity Framework

I am working of Entity Framework code First approach i am new to Entity Framework..

Today i was working of configure entity mapping using the Fluent API. I was trying to change the schema of database using below code ..

Code of My Employee_Context class is

using System;

using System.Collections.Generic;

using System.Data.Entity;

using System.Data.Entity.ModelConfiguration;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace Entity2

{

class EmployeeContext:DbContext

{

public EmployeeContext() : base("name=Emp_Connect")

{

Database.SetInitializer(new MigrateDatabaseToLatestVersion("Emp_Connect"));

}

protected override void OnModelCreating(DbModelBuilder modelBuilder)

{

//Configure Domain Classes Here

modelBuilder.HasDefaultSchema("Admin");

}

public virtual DbSet Employees { get; set; }

public virtual DbSet Projects { get; set; }

}

When i run the program then i got following error..

Automatic migrations that affect the location of the migrations history system table (such as default schema changes) are not supported. Please use code-based migrations for operations that affect the location of the migrations history system table.

I don't know how to solve this Please help me....