Entity Framework 4.3 Migration Exception when Update-Database

Question

After upgrading from EF 4.2 and Migration to EF 4.3 and enabling migration,restarting Visual studio and everything , whenever I try to call Update-Database/Add-Migration I get this:

System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.ArgumentException:
The parameter is incorrect. (Exception from HRESULT: 0x80070057 (E_INVALIDARG))
--- End of inner exception stack trace ---
at System.RuntimeType.InvokeDispMethod(String name, BindingFlags invokeAttr, Object target, Object[] args, Boolean[] byrefModifiers, Int32 culture, String[] namedParameters)
at System.RuntimeType.InvokeMember(String name, BindingFlags bindingFlags, Binder binder, Object target, Object[] providedArgs, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParams)
at System.Management.Automation.ComMethod.InvokeMethod(PSMethod method, Object[] arguments)
Update-Database : Exception has been thrown by the target of an invocation.
At line:1 char:1
+ update-database
+ ~~~~~~~~~~~~~~~
+ CategoryInfo : OperationStopped: (Exception has b... an invocation.:String) [Update-Database], RuntimeException
+ FullyQualifiedErrorId : Exception has been thrown by the target of an invocation.,Update-Database

I tried cleaning the whole project , deleting ef and migration and packages folder and doing it from the beginning and still same error !

Anyone facing the same error? Or have a solution for this?

Artem · Accepted Answer · 2012-02-10 21:02:27Z

5

In case you have context and migration in separate projects, you need to use -StartupProjectName "YourProject" option of add-migration and update-database

The same error was in 4.3 beta. I encountered it in 4.3 release as well.

answered Feb 10, 2012 at 21:02

Artem

3,7001 gold badge29 silver badges35 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Remco Ros Over a year ago

I noticed this too. But a little different in my case. I have my DbContext and Migrations in ONE project. But it is not the startup project. Adding -StartupProjectName solves this too. Really annoying to type this everytime.

Stacker Over a year ago

Yeah Ef Team confirmed this which i find strange as builds before 4.3 didnt suffer from this !

Dan Fitch · Accepted Answer · 2012-02-14 16:10:56Z

3

Instead of using the Powershell commands, you can control the migration via code, and then tell it where your assembly and context are:

var configuration = new DbMigrationsConfiguration() {
  MigrationsAssembly = typeof(YourMigrations).Assembly,
  ContextType = typeof(YourContext)
};

Then you can either script it out or auto-run it by using the DbMigrator class:

var migrator = new DbMigrator(configuration);
var scripter = new MigratorScriptingDecorator(migrator);
string script = scripter.ScriptUpdate(null, null);

answered Feb 14, 2012 at 16:10

Dan Fitch

2,5472 gold badges23 silver badges39 bronze badges

2 Comments

Stacker Over a year ago

im very interested in this can you please explain more ?

Dan Fitch Over a year ago

You might just want to check out the MSDN documentation for DbMigrator

Collectives™ on Stack Overflow

Entity Framework 4.3 Migration Exception when Update-Database

2 Answers 2

2 Comments

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related