LightSwitch An exception occurred when building the database for the application RRS feed

  • Question

  • Hi All,

    Just installed LS Beta on Win 7 VM running VS 2010 Pro SP1 Beta.

    I get this error when building after creating a table or connecting to a database:
    An exception occurred when building the database for the application.
    Method not found: 'Void Microsoft.Data.Schema.Sql.SchemaModel.ISqlSimpleColumn.set_IsIdentity(Boolean)'. C:\Program Files\MSBuild\Microsoft\VisualStudio\LightSwitch\v1.0\Microsoft.LightSwitch.targets 95 10 Application3

    Previous error leads to this part of "lightswitch.targets"  line 95 Character 10 is first code after comment:

     <!--The Development Database is built in the same location - Bin\Data - for all configurations.-->
        <BuildSchema Inputs="@(LightSwitchModel)"
        <!--The _IntrinsicData connection string should be updated to use the absolute path 
          since the Development Database is not under build output directory.-->
         ConnectionString="Data Source=.\SQLEXPRESS;AttachDbFilename='$(MSBuildProjectDirectory)\Bin\Data\ApplicationDatabase.mdf';Integrated Security=True;Connect Timeout=30;User Instance=True;MultipleActiveResultSets=True"/>


    This is the information on my VS installation from 'help->about':

    Microsoft Visual Studio 2010
    Version 10.0.31118.1 SP1Rel
    Microsoft .NET Framework
    Version 4.0.30319 SP1Rel

    Installed Version: Professional

    Microsoft Office Developer Tools   01018-532-2002102-70701
    Microsoft Office Developer Tools

    Microsoft Visual Basic 2010   01018-532-2002102-70701
    Microsoft Visual Basic 2010

    Microsoft Visual C# 2010   01018-532-2002102-70701
    Microsoft Visual C# 2010

    Microsoft Visual F# 2010   01018-532-2002102-70701
    Microsoft Visual F# 2010

    Microsoft Visual Studio 2010 Team Explorer   01018-532-2002102-70701
    Microsoft Visual Studio 2010 Team Explorer

    Microsoft Visual Studio LightSwitch Beta   01018-532-2002102-70701
    Microsoft Visual Studio LightSwitch Beta

    Microsoft Visual Web Developer 2010   01018-532-2002102-70701
    Microsoft Visual Web Developer 2010

    Crystal Reports Templates for Microsoft Visual Studio 2010  
    Crystal Reports Templates for Microsoft Visual Studio 2010

    Microsoft Package Manager   1.0
    Package Manager in Visual Studio

    Microsoft Visual Studio 2010 Professional - ENU Service Pack 1 (KB983509)   KB983509
    This service pack is for Microsoft Visual Studio 2010 Professional - ENU.
    If you later install a more recent service pack, this service pack will be uninstalled automatically.
    For more information, visit http://support.microsoft.com/kb/983509.

    Microsoft Visual Studio 2010 SharePoint Developer Tools   10.0.31118
    Microsoft Visual Studio 2010 SharePoint Developer Tools

    Telerik MVC VSExtensions   2010.03.1109.0
    Telerik Extensions for ASP.NET MVC VSExtensions Package

    Telerik OpenAccess ORM   2010.3.1125.1
    Telerik OpenAccess ORM Copyright (C) 1996-2010 Telerik; OpenAccess is the Object-Relational Mapping Tool for the Microsoft .NET Platform. www.telerik.com

    Telerik Reporting  
    For more information please visit http://www.telerik.com/reporting. Copyright © 2005–2011 Telerik, Inc.

    Telerik Silverlight VSExtensions   2010.03.1109.0
    Telerik RadControls for Silverlight VSExtensions Package

    Telerik UserSettings VSExtensions
    Package for performing configuration of the Telerik VS Extensions

    Telerik WebUI VSExtensions   2010.03.1214.0
    Telerik RadControls for ASP.NET AJAX VSExtensions Package

    Telerik WPF VSExtensions   2010.03.1109.0
    Telerik RadControls for WPF VSExtensions Package

    Thanks for any guidance you can give.


    Thursday, January 6, 2011 2:37 AM


All replies

  • Facing the same "Method not found" error as well... Error 1 An exception occurred when building the database for the application. Method not found: 'Void Microsoft.Data.Schema.Sql.SchemaModel.ISqlSimpleColumn.set_IsIdentity(Boolean)'. C:\Program Files (x86)\MSBuild\Microsoft\VisualStudio\LightSwitch\v1.0\Microsoft.LightSwitch.targets 95 10 Application3
    Monday, January 10, 2011 6:08 AM
  • Update to my previous post!!

    Tested in 3 different machines (Vista & Win7 - Visual Studio 2010) and getting the same error.  However by clicking "YES" to continue to see the Output brings the screen with another error, says "An attempt to attach an auto-named database for file <location>\DevelopmentDatabase.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share".

    • Proposed as answer by PowerBala Friday, January 14, 2011 12:35 AM
    Monday, January 10, 2011 6:17 PM
  • Format the PC and reinstalling OS and VS 2010 back solved the issue on all three machines.


    It may not be the proper solution, but working for me.

    • Proposed as answer by PowerBala Friday, January 14, 2011 12:39 AM
    Friday, January 14, 2011 12:39 AM
  • The failure to auto attach a database sounds a little similar to the problem reported in the following thread.


    For anyone about to reformat their PCs, it might be worth clearing the files in the following folder to see if it fixes the problem.

    %LOCALAPPDATA%\Microsoft\Microsoft SQL Server Data\SQLEXPRESS
    • Marked as answer by DSBHS82 Friday, January 14, 2011 8:41 PM
    Friday, January 14, 2011 9:55 AM
  • Thank you Tim,

    The advice and information in the thread you provided did the trick!


    Thanks also to PowerBlaga for all the information you provided about how you got through your similar problem. 


    Friday, January 14, 2011 8:47 PM
  • Help Please!

    I have the same problem as described above I have tried deleting files in (%LOCALAPPDATA%\Microsoft\Microsoft SQL Server Data\SQLEXPRESS) but it seems to have no effect. I am running Windows 7 32bit with Visual Studio 2010 Pro SP1 installed along with a whole host of other Apps so formatting the drive and reinstalling is not really an option. This appears to be a common problem and is not well documented. 

    Does anyone have any other ideas or information? I am ready to give up on lightswitch.

    Thursday, April 7, 2011 8:08 AM