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

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

At ...http://social.msdn.microsoft.com/Forums/en-us/adodotnetentityframework/thread/3adc080f-ee8c-4104-be29-95b2fb3fabe9..., Noam Ben-Ami, a Microsoft employee, responded to my query 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/df3...

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

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

The exception message indicates that your Customer class resembles this....public class Customer { [StringLength(4)] public int CustomerID { get; set;} } ...Note that you are unable to use...StringLength... on an...int... property....Eliminate the...StringLength... and there should be no more validation exceptions.

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

You are not required to change it to...string... Concatenating strings will take care of that....AnncTitle = n.AnncTitle + " <a href='bulletinAdd.aspx?ID=" + n.RecID + "'><Edit></a>", ...No need to make a call...ToString... and also

Updating Database model (.edmx) Model First

Right-clicking on your model will reveal an option. model update using database...Once you click "Update Model from Database," the following box will appear:...To update them in the model, choose the changed table.

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

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EF Database first how to update model for database changes?

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

A third update: Execute the following queries: Both the global and non-global switches must be turned off. On VS2015 + EF6.1.3 + MySql 5.7.12, I have demonstrated that they work....use <<database name>>; set global optimizer_switch='derived_merge=off'; set optimizer_switch='derived_merge=off'; ...You DO NEED to restart Visual Studio after changing ...

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

The problem has been fixed. I manually alter the type in the diagram view, and the model class is then mapped to it.

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

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