FAQ Database Discussion Community


Updating ado.net entity data model without effecting model classes already in EDMX

c#,asp.net-mvc-5,ado.net-entity-data-model
i have done lot of attribute validation on Models in EDMX entity data model class .but the time of Updating by adding a new table the ado.net entity data model automatically removed all attributes which i given. Is there any way to update newly added table model class without effecting...

Can't Create Entity Data Model - using MySql and EF6

mysql,entity-framework,visual-studio-2013,mysql-connector,ado.net-entity-data-model
I'm trying to add an edmx Entity model to my C#/Web Project in Visual Studio 2013. My problem is that the file is not created. I do the following steps: Give the item a name Choose 'EF Designer from database' Choose the connection from the drop down (localhost) that already...

Get page content dynamically from Sql server database MVC 5

sql-server,asp.net-mvc,asp.net-mvc-5,ado.net-entity-data-model
I want to get the info into an li element from SQL Server database in MVC 5 with ADO.NET entity data model. This is my generated model.edmx public partial class Entities : DbContext { public Entities() : base("name=Entities") { } protected override void OnModelCreating(DbModelBuilder modelBuilder) { throw new UnintentionalCodeFirstException(); }...

Unable to determine the principal end of an association between the types [duplicate]

c#,entity-framework,ef-code-first,one-to-one,ado.net-entity-data-model
This question already has an answer here: What does principal end of an association means in 1:1 relationship in Entity framework 4 answers Here is the situation. There are two type of ElectricConsumer ie CommercialConsumers & DomesticConsumers(Quaters) and one Quater is allocated to one Employee. Below is my code...