While updating Model from Database, a System.ArgumentException occurred.

Instead of "Generate Database from Model," Entitiy Framework uses "Update Database from Model."

Noam Ben-Ami - MSFT1 (Microsoft Employee) answered my question at ...http://social.msdn.microsoft.com/Forums/en-us/adodotnetentityframework/thread/3adc080f-ee8c-4104-be29-95b2fb3fabe9... as follows:...We've build the entity designer database power pack to support this. You can download it here: ...http://visualstudiogallery.msdn.microsoft.com/en-us...

this dictionary requires a model item of type 'System.Collections.Generic.IEnumerable`1[Monet.Models.AgentTransmission]'

As the error is trying to tell you, you declared your view as taking a collection of ...AgentTransmission.......You can't pass it a collection of anonymous types.

System.InvalidCastException: Unable to cast object of type 'System.Int32' to type 'System.String'

Judging from the exception message your Customer class looks something like this......public class Customer { [StringLength(4)] public int CustomerID { get; set;} } ...Notice that you can't use ...StringLength... on an ...int... property....Get rid of the ...StringLength... and the validation exceptions should go away.

LINQ to Entities does not recognize the method 'System.String StringConvert(System.Nullable`1[System.Double])

You don't have to convert it to ...string..., string concatenation will take care of that. ...AnncTitle = n.AnncTitle + " <a href='bulletinAdd.aspx?ID=" + n.RecID + "'><Edit></a>", ...You don't have to call ...ToString... as well.

Updating Database model (.edmx) Model First

Open your model right click and you will find an option Update Model from database...Click update model from database than a window will open like this:...So choose the modified table to update them in model.

Database first create entity framework 6.1.1 model using system.data.sqlite 1.0.93

[ ...UPDATE... : for an easier solution that works with Visual Studio 2013 Update 4 (Pro and Ultimate) and recent versions of Sqlite Providers and EF, look at the solution 'broslav' posted below. Don't know if it works with Express editions... ]...Ok, this is a suggestion. This does NOT work for Visual Studio Express editions. Also, I'm not sure ho...

EF Database first how to update model for database changes?

Not a fix but a workaround: Is it not an option to simply remove and regenerate the EDMX and the generated classes? That's what I do, it is much easier than working with the update feature, and the result seems to be the same. Your POCO extensions still remain the same and functional....I use database first and I have my SQL upgrade scripts, the ge...

MySQL 5.7: System.Data.StrongTypingException when adding or updating an EDMX model

Update a 3rd time: Execute the queries below: you need BOTH global and non-global switches to be OFF. I have proved these to work on VS2015 + EF6.1.3 + MySql 5.7.12...use <<database name>>; set global optimizer_switch='derived_merge=off'; set optimizer_switch='derived_merge=off'; ...After settings these values you do NEED to restart Visual Studio b...

Updating entity framework model after changing the data type of column in database table

The issue has been resolved. I manually change the type from the diagram view and then it get mapped with the model class.

cannot convert from 'System.Collections.Generic.List<object>' to 'System.Collections.Generic.List<DAL.model>'

Instead of selecting ...anonymous... object with ...new { .. }... Try as below with ...new DAL.model() { ... }.......public IQueryable<DAL.model> GetAllmodels() { var models = (from d in db.models where (d.Model_Deleted == false) select ( new DAL.model() { ...