Error2 Build failed due to validation errors in *.dbml RRS feed

  • Question

  • I am getting the following error message in a C# 2008 application and I do not know what to look at to resolve the problem:
    Error2 Build failed due to validation errors in C:\RPT.dbml.  Open the file and resolve the issues in the Error List, then try rebuilding the project.

    There is nothing showing me where the exact error is coming from. There is a reference setup for System.Configuration.

    The following code is from the RPT.designer.cs

    namespace cli
    using System.Data.Linq;
    using System.Data.Linq.Mapping;
    using System.Data;
    using System.Collections.Generic;
    using System.Reflection;
    using System.Linq;
    using System.Linq.Expressions;
    using System.ComponentModel;
    using System;
        using System.Configuration;

    public partial class RPTDataContext : System.Data.Linq.DataContext

    private static System.Data.Linq.Mapping.MappingSource mappingSource = new AttributeMappingSource();


    public RPTDataContext() :
            base(ConfigurationManager.ConnectionStrings["DEVConnectionString"].ConnectionString.ToString(), mappingSource)

    The following code is from RPT.cs file:

    namespace cli
        partial class RPTDataContext

    Here is the code in the app.config file:

        <add name="DEVConnectionString"
          connectionString="Data Source=xxx;Initial Catalog=PROD1;Integrated Security=True"
          providerName="System.Data.SqlClient" />

    Thus can you tell me and/or show me in code how to fix this problem?
    • Moved by Cindy Meister MVP Thursday, November 29, 2012 4:30 PM not VSTO or Office related (From:Visual Studio Tools for Office)
    Thursday, November 29, 2012 3:39 PM