No connection string named 'MyApplicationEntities' could be found in the application config file

connection-string database-migration entity-framework-4.3
Sanj picture Sanj · Jun 11, 2012 · Viewed 61.6k times · Source

I just install EF 4.3 and trying to upgrade my project with migration. however I am getting issues with trying to execute add-migration initial to my project via Package Manager console.

It is throwing any exception now No connection string named 'MyApplicationEntities' could be found in the application config file.

Now my config has it all 

<connectionStrings>
<add name="MyApplicationEntities" 
     connectionString="metadata=res://*/DataModel.csdl|res://*/DataModel.ssdl|res://*/DataModel.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=localhost;initial catalog=MyApplicationEntitiesDB;integrated security=True;multipleactiveresultsets=True;App=EntityFramework&quot;" 
     providerName="System.Data.EntityClient" />

I am not sure what is the issue is it a bug in EF 4.3 or there is something I am not doing right.

I thought this post has solved the issue but not quite.

Anyone got an answer.

Appreciate Sanj.

Answer

Sanj picture Sanj · Jun 11, 2012

Ah, figured this out accidentally.

I had to remove 

public MasterEntities()
    : base("name=MyApplicationEntities")
    //      ^^^^^
{
}

to 

public MasterEntities()
    : base("MyApplicationEntities")
{
}

EF 4.3 does not like connection string being called name=xxxxx

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