C#, Restful Web Api on MVC4

Question

i am new in c#, and making a  Restful API on  MVC4,

 i am using following code and gets an error on

 " foreach (DataRow menuDR in menuDataSet.Tables [7].Rows)"

 

IndexOutOfRangeException was unhandled by user code, and in details in show "cannot find table7"

i used the same approach with 1 table database and it was working, i don't know how to handle this exception and tried various things to get it sort.... 

 

public IEnumerable<RestaurantsMenu> GetAllMenu()

{

menuCon = new SqlConnection ("Data Source=MyPc\\MyPc;Initial Catalog=MENU;Integrated Security=True");

menuDataAdapter = new SqlDataAdapter (" SELECT * FROM RestaurantsMenu ", menuCon);

foreach (DataRow menuDR in menuDataSet.Tables [7].Rows)

{

Rst_Menu.Add(new RestaurantsMenu(){Restaurant_ID = int .Parse (menuDR[0].ToString()), RestaurantName =menuDR[1].ToString(),

Menu =menuDR[2].ToString(), Price=int .Parse (menuDR[3].ToString()) } );

}

return Rst_Menu;

}