My original (and still pending) problem is how to get my desktop WPF application to successfully open and update a MS SQL database. The exception and trace symptoms are:
"The underlying provider failed on Open"
"The login failed.\r\nLogin failed for user PHILB\\Phillip"
Error 18456, severity 14, state 38
Thanks to several posts, I was able to get this far.
I am using Visual Studio 2012, the 'about' says it has SQL Server data tools 11.1.
- Using Tools / Options / Database Tools / Data Connections, the SQL Server Instance is (LocalDB)\v11.0
My MS SQL Server Management Studio is for SQL Server 2012, version 11.0.
My C# desktop application is a simple WPF project using Entity Framework for 'model first'. So I create one simple table, save all changes, right click the entity design window to:
- 'Generate Database from Model'
- click the Previous Button so the Generate Database wizard appears
- click on New Connection
- in Connections Properties window click on Advanced button
- in AttachDbFilename I put: C:\Users\....\Stats2011H.mdf
- the Data Source shows: (LocalDB)\v11.0
- click OK to close the Advanced Properties window
- back in the Connections Properties window
- leave 'Use Windows Authentication' selected
- click OK
- Pop-up says do you want to create a new DB?
- click yes
- Eventually the DDL Script appears and I click 'Finish'
- Before running the DDL script I check
- the App.Config has been updated for the DB like:
data source=(LocalDB)\v11.0;attachdbfilename=|DataDirectory|\Model\Data\Stats2011J.mdf
- in Visual Studio, an empty DB has been created – good
- in SQL Server Management Studio, the DB is there – good
- in Visual Studio / Server Explorer the DB is there – good
- Then I run the DDL script
- connect using: (LocalDb)\V11.0
- set connecting / options / tab for additional connection parameters to: AttachDbFilename=C:\Users\xxxx \Model\Data\Stats2011H.mdf; database=Stats2011H;
- script runs with no errors
- disconnect from the server
- Check the DB in SQL Server Management Studio
- DB is there with the one table – good
- In Visual Studio I update the app.config file to:
- replace 'attachDBfilename=' with 'database=|DataDirectory|\Model\Data\Stats2011J.mdf
- per reading a post, this fix helped me get past the error for " A database with the same name exists, or specified file cannot be opened, or it is located on UNC share."
- Then I run my desktop WPF program which adds items to the one table
- then the program does: inDBConnection.SaveChanges();
- this throws an exception showing:
"The underlying provider failed on Open"
The inner exception showed:
"The login failed.\r\nLogin failed for user PHILB\\Phillip"
- sorry I did not include the stack, and now I cannot recreate this test due to further problems below
- the top of the stack regarded SQLClient.SQLInternalConnectionTds
- the above user name seems correct – that is me, the only user of my laptop with administrative privileges.
- the SQL Server trace additionally showed:
- Error 18456, severity 14, state 38
- after reading many logs about this problem, I checked this DB via SQL Server Management Studio
- the DB was setup for both Windows and SQL Server authentication
- Q1: why can't my desktop program logon to the server and use this database?
- Since I had done these tests a lot, I thought I would delete some of the old DB's.
- in SQL Server Management Studio, I deleted some DB's including the latest Stats2011H.mdf per above.
- I then deleted that database from my Visual Studio project so I could try again (as I had done before)
- Perhaps this order of deleting was a problem? In the past I may have deleted from Visual Studio first.
- now I cannot even open SQL Server Management Studio, it keeps reporting the latest error, about how the login fails for this nowdeleted database:
- Q2: How can I get SQL Server Management Studio to open?
- the database it cannot open has been deleted (at least I told it to delete)
- In Visual Studio:
- Server Explorer shows some older DB's, but not 'Stats2011H'
- SQL Server Object Explorer shows no user databases under the (localdb)\Projects for SQL Server 11.0, only the folder for 'System Databases'.
- I have closed all apps and restarted Windows – no help.
Any help is very appreciated, thank you in advance.
philb222