How to upgrade from entity framework 4 to EF6?

Question

I want to create an EntityDataModel with Entity Framework 6 but every time I try I get this error:

Your project references an older version of Entity Framework.

I'm using Visual Studio 2013 and my project is Asp.net 4.5.1 web forms project. this is my web.config file, I deleted some sections of this file in order to solve the problem but all in vain.

<?xml version="1.0"?>
<!--
For more information on how to configure your ASP.NET application, please   visit
http://go.microsoft.com/fwlink/?LinkId=169433
-->
<configuration>
<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false"/>
</configSections>
<!--
For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.

The following attributes can be set on the <httpRuntime> tag.
  <system.Web>
    <httpRuntime targetFramework="4.5.1" />
  </system.Web>
-->
<system.web>
<compilation debug="true" targetFramework="4.5.1">
  <assemblies/>
</compilation>
<httpRuntime targetFramework="4.5"/>
<customErrors mode="Off"/>
</system.web>
<system.codedom>
<compilers>
  <!--<compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:6 /nowarn:1659;1699;1701" />
  <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:14 /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+" />
  -->
</compilers>
</system.codedom>
<appSettings>
<add key="ValidationSettings:UnobtrusiveValidationMode" value="None"/>
</appSettings>
<connectionStrings>
<add name="tebimir_db_tebimEntities" connectionString="metadata=res://*/DataAccessLayer.tebimir_db_tebim.csdl|res://*/DataAccessLayer.tebimir_db_tebim.ssdl|res://*/DataAccessLayer.tebimir_db_tebim.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=tebim.ir,9993;initial catalog=tebimir_db_tebim;persist security info=True;user id=tebimir_dbadmin;password=qwerty*2607548;MultipleActiveResultSets=True;App=EntityFramework&quot;" providerName="System.Data.EntityClient"/>
 <add name="tebimir_db_tebimEntities_plain" connectionString="data source=185.94.97.58,9993;initial catalog=tebimir_db_tebim;persist security info=True;user id=tebimir_dbadmin;password=qwerty*2607548;"/>
 </connectionStrings>
 <system.webServer>
 <defaultDocument>
  <files>
    <clear/>
    <add value="index.aspx"/>
  </files>
</defaultDocument>
 <validation validateIntegratedModeConfiguration="false"/>
</system.webServer>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
  <parameters>
    <parameter value="mssqllocaldb"/>
   </parameters>
  </defaultConnectionFactory>
  <providers>
  <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer"/>
   </providers>
  </entityFramework>
 </configuration>

Lets have look at [this link](http://stackoverflow.com/questions/28241500/cant-create-entity-data-model-using-mysql-and-ef6). It may solve your problem. — Tuks, May 28 '16 at 10:38
is there a problem with my account or something? all my questions never get more than 10 visitors. stack overflow is really a bad site — Ali.Rashidi, May 28 '16 at 10:43

score 5 · Answer 1 · answered May 28 '16 at 10:26

5

Try updating Entity Framework using NuGet Before adding the model, follow these steps

Right click on your project in VS Solution explorer and select 'Manage NuGet packages'
Select EntityFramework ad Click update.
Now add the Entity Data Model.

answered May 28 '16 at 10:26

Mihir Kale

1,028
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I did, i uninstalled the EF, reinstalled it. but nothing changed – Ali.Rashidi May 28 '16 at 10:28
its version is 6.1.3 – Ali.Rashidi May 28 '16 at 10:28
how can I install entityframework 6 ? i have installed it using nuget, is there any other extra things to do? – Ali.Rashidi May 28 '16 at 10:30
1

i did the steps but another error appeared "your project references the latest version of entityframework......." – Abdullah Mar 25 '20 at 20:57

score 1 · Answer 2 · edited May 23 '17 at 11:53

1

I suggest you to uninstall all the entity framework packages and reinstall it from nuget packages. I hope it will help you.

For more information you can use this link.

edited May 23 '17 at 11:53

Community

1
1

answered May 28 '16 at 10:52

Tuks

23
6

Thanks, I dont use mysql. the given link is about mysql. – Ali.Rashidi May 28 '16 at 10:54

score 1 · Answer 3 · edited Apr 01 '19 at 06:51

1

Right Click Solution Explorer => Manage Nuget Package => Install Entity Framework

edited Apr 01 '19 at 06:51

Wai Ha Lee

8,598
83
57
92

answered Nov 14 '17 at 05:39

Imran

1,951
1
10
7

This appears to rehash [this answer](https://stackoverflow.com/a/37497863/1364007). The quote formatting, which I have rolled this answer back to using, is apt. Because this answer duplicates the other answer (and has no up/down votes), there is little point in keeping it. – Wai Ha Lee Apr 01 '19 at 07:00

How to upgrade from entity framework 4 to EF6?

3 Answers3