Keyword not supported: "data source" initializing Entity Framework Context
Entity FrameworkConnection StringEntity Framework Problem Overview
I'm initializing Entity Framework Object context, and this gives me the keyword not supported error:
metadata=res://*/MainDB.csdl|res://*/MainDB.ssdl|res://*/MainDB.msl;provider=System.Data.SqlClient;provider connection string="Data Source=.\SQLEXPRESS;AttachDbFilename=D:\Workspace\vs\Leftouch\Leftouch.Web\Data\Leftouch.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True;App=EntityFramework"
I took the connection string directly from web.config which was working, and modified only the path to the file (which I set dynamically), and instead of using the default value, used this connection string explicitly. What could cause this error?
Entity Framework Solutions
Solution 1 - Entity Framework
The real reason you were getting this error is because of the " values in your connection string.
If you replace those with single quotes then it will work fine.
https://docs.microsoft.com/archive/blogs/rickandy/explicit-connection-string-for-ef
(Posted so others can get the fix faster than I did.)
Solution 2 - Entity Framework
I fixed this by changing EntityClient back to SqlClient, even though I was using Entity Framework.
So my complete connection string was in the format:
<add name="DefaultConnection" connectionString="Data Source=localhost;Initial Catalog=xxx;Persist Security Info=True;User ID=xxx;Password=xxx" providerName="System.Data.SqlClient" />
Solution 3 - Entity Framework
This appears to be missing the providerName="System.Data.EntityClient" bit. Sure you got the whole thing?
Solution 4 - Entity Framework
Believe it or not, renaming LinqPad.exe.config to LinqPad.config solved this problem.
Solution 5 - Entity Framework
Make sure you have Data Source and not DataSource in your connection string. The space is important. Trust me. I'm an idiot.
Solution 6 - Entity Framework
Just use " instead ", it should resolve the issue.