c# - How to upgrade from entity framework 4 to EF6? -

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i want create entitydatamodel entity framework 6 every time try error:

your project references older version of entity framework.

enter image description here

i'm using visual studio 2013 , project asp.net 4.5.1 web forms project. web.config file, deleted sections of file in order solve problem in vain.

<?xml version="1.0"?> <!-- more information on how configure asp.net application, please   visit http://go.microsoft.com/fwlink/?linkid=169433 --> <configuration> <configsections> <!-- 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> <!-- description of web.config changes see http://go.microsoft.com/fwlink/?linkid=235367.  following attributes can set on <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>

try updating entity framework using nuget before adding model, follow these steps

  1. right click on project in vs solution explorer , select 'manage nuget packages'

  2. select entityframework ad click update.

  3. now add entity data model.


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