public string UnAllocateClassRoom()
{
if (aClassRoomGateway.IsRoomUnallocated())
{
return("Room Already unallocated");
}
else
{
int rowAffected = aClassRoomGateway.UnAllocateClassRoom();
if (rowAffected > 0)
{
return("Room unallocated");
}
else
{
return("Room unallocation falied");
}
}
}