在Entity Framework中重用现有的数据库连接字符串

public CNBlogsObjectContext()
    : base(BuildConnection("CNBlogsDB"), "club_CNBlogsContainer")
{
}

static EntityConnection BuildConnection(string connectionStringName)
{
    string connectionString = ConfigurationManager.ConnectionStrings[connectionStringName].ConnectionString;
    MetadataWorkspace workspace = new MetadataWorkspace(new string[] { "res://*/" },
        new Assembly[] { Assembly.GetExecutingAssembly() });

    SqlConnection sqlConnection = new SqlConnection(connectionString);
    return new EntityConnection(workspace, sqlConnection);
}