Server Error in '/FCFront' Application. The connection name 'Conn' was not found in the applications configuration or the connection string is empty. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidOperationException: The connection name 'Conn' was not found in the applications configuration or the connection string is empty. Source Error: Line 97: <asp:MultiView ID="MltvwViewRegistration" runat="server"> Line 98: <asp:View ID="VwSpecilaFriend" runat="server"> Line 99: <asp:SqlDataSource runat="server" ID="PeopleFriendsDataSource" ConnectionString="<%$ ConnectionStrings:Conn %>" Line 100: InsertCommand="RegistrationInsert" InsertCommandType="StoredProcedure" OnInserting="DataSource_Inserting"> Line 101: <InsertParameters>I checked the whole project and there is no entry in web.config for connectionstring, but there is one in app.settings file.