The type initializer for threw an exception in entity framework model?

LINQ to Entities only supports casting in the Entity Framework. basic kinds in the Entity Data Model

The Entity Framework makes this difficult and I'm not sure there's a way to do what you want to do with a single return value type (IComparable, object, etc). You might consider reworking your design into a dictionary of name-to-...Func<IQueryable<K>, IOrderedQueryable<K>>... values:..._possibleSortForForumItem.Add("CreateDate", query => query...

Error "Failed to set database initializer of type MyNamespace.MyCustomInitializer, MyAssembly" could not load MyContext type

I'm creating a web app using .NET4.5 with Entity Framework 6 alpha3 that uses a new SQL Compact database. The database does not yet exist....I have the following code in a web form:...public IQueryable<Job> listJobs_GetData() { var db = new JournalistContext(); IQueryable<Job> query = db.Jobs.Where(d => d.JobStart > DateTime.Now) .O...

Entity Framework type initializer exception

Your App.config file has Entity Framework 5.0 listed, and some project in your code is still holding onto EF 4.4 and expecting to find it in the App.config file....Here's what most likely happened: You installed EF 5.0 on a project that was building in .NET 4.0, which makes the version of EF 4.4 instead of 5.0 (since 5.0 is only for .NET 4.5). If y...

Entity Framework Code Migrations: Exception has been thrown by the target of an invocation

I'm using Code first Entity Framework 5 in my MVC project. Today I was making some changes to my domain model and updated the rest of the application to work with these new changes. Naturally, when changes to the domain model is made, you'll need to update the database. We're using code migrations to do that (manual migration, that is). However whe...

The type initializer for 'System.Data.Entity.Internal.AppConfig' threw an exception on a Sub Website

In EF6 you can use Code Base configuration - take a look at ...this... article for more details....EDIT...I checked in a ...change... to EF6 code where exact duplicates are ignored. This should solve your problem. Note that this did not fit in the 6.0.2 release and should be included in the next release after 6.0.2.

the type initializer for 'System.Data.Entity.Internal.AppConfig' threw an exception for Windows XP

My WPF application works fine on Windows 7, but throws the above error when running on Windows XP. I am using ENtity Framework 6.1.1...App.xaml is ...<Application.Resources> <main:MainConverter x:Key="MainVerter"/> <Style x:Key="DetailHead1Style" TargetType="TextBlock"> <Setter Property="FontSize" Value="20"/> <Setter Proper...

Exception has been thrown by the target of an invocation thrown when scaffolding a controller

I created a separate Class Library project to store the Database Context and Model Classes. In the same solution, I created an ASP.NET MVC project and referenced the Class Library project, as well as include the Connection String for the Database Context, in the project's Web.config file....However, when I attempt to add a Controller (with views, u...

Entity framework throwing invalid operation exception - Connection string in app.config not found

I added a new ADO.NET data model from the database, and everything generated fine....Then I try to make a call to get one of the tables:...public Sensor[] GetAllRegisteredSensors() { using (var context = new ClientSensorLocationEntities()) { try { return context.Sen...

Entity Framework 6 throws migration exception when trying to create a context with Effort

I'm trying to use Effort to test my application but if code-first migrations are enabled on the context then it throws the following exception:...System.InvalidOperationException: Migrations is enabled for context 'XDbContext' but the database does not exist or contains no mapped tables. Use Migrations to create the database and its tables, for exa...

The type initializer for 'System.Data.Entity.Migrations.DbMigrationsConfiguration`1' threw an exception

I have ...ASP.Net MVC... site....Technology Stack ...ASP.Net 4.6...C#.Net...EF 6...MySQL -Database...While I am trying to generate the database using ...Nuget... command:-...Enable-Migrations -force ...I am getting the below exception...The type initializer for 'System.Data.Entity.Migrations.DbMigrationsConfiguration`1' threw an exception....Follow...