LINQ to Entities: DB connection failed

I've just converted my data access from Linq to SQL to Linq to Entities. I've created my edms and a have updated my class as follows but I'm getting any error that the connection is not found. The error is in the ModelDesigner.cs file. Any help on this? Thanks ~susan~

Error report:

The specified named connection is either not found in the configuration, not intended to be used with the EntityClient provider, or not valid.

Line 48:         /// Initializes a new FVTCEntities object using the connection string found in the 'FVTCEntities' section of the application configuration file.
Line 49:         /// </summary>
Line 50:         public FVTCEntities() : base("name=FVTCEntities", "FVTCEntities")
Line 51:         {
Line 52:             this.ContextOptions.LazyLoadingEnabled = true;

Here is my code for my Data Access Layer:

namespace DL
{
    public class DLgetRestaurants
    {
        FVTCEntities db = new FVTCEntities();

        public List<RESTAURANT> getRestaurants(string cuisineName)
        {
            var cuisineID = db.CUISINEs.First(s => s.开发者_运维问答CUISINE_NAME == cuisineName).CUISINE_ID;

            List<RESTAURANT> result = (from RESTAURANT in db.RESTAURANTs.Include("CITY").Include("CUISINE") 
                                       where RESTAURANT.CUISINE_ID == cuisineID 
                                       select RESTAURANT).ToList();


             return result;
        }
    }
}

Chances are your connection string doesn't have the metadata resources specified. Can you post your connection string?

http://msdn.microsoft.com/en-us/library/cc716756.aspx