jet-ef-provider

Does Microsoft Jet DB work with Entity Framework?

由 不想你离开。 提交于 2019-12-28 06:45:39
问题 In this forum here , someone mentions that Entity Framework does not work with Access (Jet DB - .mdb). However it seems that there is a provider for Jet DB as described here Which makes me think that the only thing I need with Entity Framework is to define the follwing before I define the models: <connectionStrings> <add name="ProductContext" providerName="Microsoft.Jet.OLEDB.4.0" connectionString="Source=C:\mydatabase.mdb;Jet OLEDB:Database Password=MyDbPassword;"/> </connectionStrings> Does

Error Could not load type System.Data.OleDb.OleDbConnection from assembly System.Data when using Scaffold-DbContext, EntityFrameworkCore.Jet, .NetCore

由 久未见 提交于 2019-12-18 09:21:12
问题 I am trying to use Scaffold-DbContext from Entity Framework Core to create Models from an existing MS Access Database. In Package Manager Console when I run the command: Scaffold-DbContext "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Folder\Database.mdb;" EntityFrameworkCore.Jet I get the following error: Could not load type 'System.Data.OleDb.OleDbConnection' from assembly 'System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=123123123'. I'm using a ClassLibrary project with

duplicate values in the index, primary key, or relationship

由 柔情痞子 提交于 2019-12-11 05:35:59
问题 Using JetEntityFrameworkProvider and an MS Access/Jet File I am updating values of an Entity, and I am receiving the following error when I save changes. OleDbException: The changes you requested to the table were not successful because they would create duplicate values in the index, primary key, or relationship. Change the data in the field or fields that contain duplicate data, remove the index, or redefine the index to permit duplicate entries and try again. Here is my code var pagesList

How to use Entity framework for MS Access database

由 ↘锁芯ラ 提交于 2019-11-27 15:27:04
I have to develop a desktop windows application in C#.Net 4.0 that will run in three different databases ie. MS Access 2007 onwards, Oracle 11G, and SQL Server 2008. Now I want to use Entity Framework in my application. Is this a best choice to use EF for my application ? If yes, then how can I use entity framework for Access database? Thanks in Advance. bubi You can use the EF with Microsoft Access using an Entity Framework provider for Microsoft Access. You can find an EF provider for Access https://github.com/bubibubi/JetEntityFrameworkProvider Simon See this answer. Ask yourself why you

How to use Entity framework for MS Access database

由 安稳与你 提交于 2019-11-26 22:25:00
问题 I have to develop a desktop windows application in C#.Net 4.0 that will run in three different databases ie. MS Access 2007 onwards, Oracle 11G, and SQL Server 2008. Now I want to use Entity Framework in my application. Is this a best choice to use EF for my application ? If yes, then how can I use entity framework for Access database? Thanks in Advance. 回答1: You can use the EF with Microsoft Access using an Entity Framework provider for Microsoft Access. You can find an EF provider for
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