SQL Server connection string problems

Question

I am trying to have access to my project from the browser, I have put it on my server .

My database is on SQL Server 2008 R2 .

When I try to login I have always

Answer 1

The AttachDbFileName= feature is available ONLY in the SQL Server EXPRESS edition. It is NOT compatible and supported on a "full" SQL Server installation.

If you have a full SQL Server, you have to attach your database to the SQL Server instance, and then reference it by its (logical) database name - not the physical file name:

<connectionStrings>
  <add name="LocalSqlServer" 
       connectionString="server=.;database=DataUi;Integrated Security=SSPI;"
       providerName="System.Data.SqlClient" />
 </connectionStrings>

Answer 2

I think there's a missing \\ in your AttachDBFilename right after |DataDirectory|:

AttachDBFilename=|DataDirectory|\\DataUi.mdf

Answer 3

You should "Database" rather than "AttachDbFileName" as it is not recommended for production servers.

Hence your connection string should be:

<connectionStrings>
<remove name="LocalSqlServer" />
<add name="LocalSqlServer" connectionString="data source=.\SQLEXPRESS;Initial  
Catalog=DataUi;Integrated Security=SSPI;Database=DataUi.mdf;User  
Instance=true"
providerName="System.Data.SqlClient" />
</connectionStrings>