Questions tagged as 'entity-framework'

Tagged questions
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Update problem with 1 field - EF

Follow the code: using (var db = new Entities()) { var t = new MinhaTabela { MeuCampo= 10 }; db.Entry(t).State = EntityState.Modified; db.SaveChanges(); } Table definition: CREATE TABLE [dbo].[MinhaTabela] (...
asked by 08.01.2017 / 03:48
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The client entity type is not part of the template for the current context

I'm trying to reproduce this example of EntityFramework with standard repository, as follows the link: link But it is giving the error described in the topic title. I'll post the codes. The first is the class BancoContext.cs: using...
asked by 24.07.2016 / 04:23
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How to configure Context to put the plural table name in pt-BR?

I'm in an ASP.NET MVC 5 application, setting up a DbContext class. When EF generates the database, the tables for the application objects are getting the plural names in English. For example: public System.Data.Entity.DbSet<Teste....
asked by 15.07.2016 / 18:39
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Entity Framework 6 relationship

I have a class where I need to have 2 different relationships with the same table. public class Usuario { public int Naturalidade {set;get;} public int CidadeEndereco {set;get; } public class Cidade { public int Id {se...
asked by 17.06.2016 / 21:10
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Entity FrameWork (ORM) and DropDownList Html

I have two mapped models that will work like this: The model Afaze will have a ComboBox (DropDownList) that will make the categories available to the user to select, however these categories are registered by the same, so in the source I h...
asked by 24.09.2016 / 00:42
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Problem saving accent with Entity Framework and PostgreSQL

I need to migrate a system with SQLSERVER database to a PostGreSQL 9.3. I have never worked with PostGre before so I'm using Entity Framework 6 with model-first to make the process easier. The migration application is being developed in WPF. My...
asked by 28.06.2016 / 22:23
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Attribute Type for PostgreSQL oid column with EF6

What kind of attribute should I use to represent a column type oid of PostgreSQL with Entity Framework 6 Code-First? Remembering that PostgreSQL's oid type is for storing files.     
asked by 24.05.2016 / 16:27
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Replacement for Fluent API

I'm in a project of a system that uses C # language, using MVC, Entity Framework and I'm using the Fluent API. I wonder if you have any other way to do this. HasKey(oc => oc.OrdemCompraId); HasRequired(oc => oc.UsuarioCadastro) .With...
asked by 28.09.2015 / 18:50
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Identifying the foreign key in the Entity Framework CodeFirst

The Entity Framework identifies the foreign key through properties that have Id as part of the name or by Data Annotation [Key]. My question is, how does it identify the foreign keys and does the relationship between another table? public clas...
asked by 14.08.2015 / 02:33
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Synchronize items in comboboxes at run time

I've tried for some time to figure out how to synchronize one combobox with another. I am wanting to sync comboboxes at runtime. When the user selects a category in the combobox, depending on their choice, the combobox subcategory will display t...
asked by 17.11.2015 / 23:22