Having trouble with LinqPad Adding a Connection to Entity Framework

问题

I am new to Entity Framework and Linq to Entities and I want to try LinqPad but I can't figure out how to make a connection to the edmx model I have created. I have an MVC project and I added an ADO.Net Entity Data Model against a SQL Sever database ( a Development server, not one on my local machine) Did a Build.Right click in my designer surface and Add Code Generation Item. That has given me two .tt folders, one for my dbContext class, one with all my classes.

Open LinqPad click on Add Connection. Point to the .dll file in my solutions bin folder, then in the Full Type Name of dbContext I choose the entity I created. Now is whee I am having trouble making this work. I point to the solution web.config file and when I click the Test button I get an error saying "Could not load file or assembly 'Entity Framework version=..." & "The system cannot find the file specified. (C:\users..\web.config line 9" Any ideas?

回答1:

I took configSections away from config file and connection works.

  <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=4.3.1.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
  </configSections>
  <entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlCeConnectionFactory, EntityFramework">
      <parameters>
        <parameter value="System.Data.SqlServerCe.4.0" />
      </parameters>
    </defaultConnectionFactory>
  </entityFramework>

回答2:

I've had this exact problem with LinqPad 4.42.01. My project is a web project using an EF5 data assembly. I ended up creating a linqPad.config file (below) in the web projectMy and it works great.

<?xml version="1.0" encoding="utf-8"?>
<configuration>
   <connectionStrings>
      <remove name="MySqlServer"/>
      <add name="MySqlServer" connectionString="Data Source=mydb;Initial Catalog=mycat;User ID=iamuser;Password=soopersekret;Trusted_Connection=False" providerName="System.Data.SqlClient" />
   </connectionStrings>
</configuration>

来源：https://stackoverflow.com/questions/10605859/having-trouble-with-linqpad-adding-a-connection-to-entity-framework

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linqpad