In VS 2012 I created a new MVC 4 project starting from the internet application template, then changed its properties to use SQL Server Express instead of LocalDB, then tried successfully to register a new user.
First, the project created its own membership database in the App_data folder, but for deployment reasons I wanted to change the database location, so I moved the database physical files from C:\MyProject\App_Data\ to C:\MyData and modified the related path in the web.config file. To ensure that the database is reachable by the SQL Server Express instance, I added my own user account with full access in the properties security tab, then successfully shown its data in SQL Server Management Studio.
Now, when I run the project, and click on the "log in" link, the debugger stops at LazyInitializer.EnsureInitialized and fails with an error; the inner exception of the error message says:
Database
'C:\MyProject\App_Data\aspnet-MyProject-20121206123456.mdf' already
exists. Choose a different database name.
Cannot attach the file 'C:\MyData\aspnet-MyProject-20121206123456.mdf' as database
'aspnet-MyProject-20121206123456.mdf'
I checked all the project to find any different database connection settings but found nothing.
Within VS, when I use the server explorer to view the database tables data, I cannot find "show data" option when I right click on one of the displayed tables, when I go to C:\MyData\ folder to see the physical database files properties, in the security tab, I find that each time I run the project my account using full access was removed.
Also the browser is displaying the next Exception text:
The data provider. Net Framework requested was not found. It may not be installed.
C:\MyProject\Filters\InitializeSimpleMembershipAttribute.cs Ligne : 42
Ligne 40 : }
Ligne 41 :
Ligne 42 : WebSecurity.InitializeDatabaseConnection("DefaultConnection", "UserProfile", "UserId", "UserName", autoCreateTables: true);
Ligne 43 : }
Ligne 44 : catch (Exception ex)
It looks like a Visual Studio 2012 bug which doesn't recognize SQL Server 2012 Express instance. I have downloaded Microsoft WebMatrix2 and used it to load the website and could successfully log in using the moved membership database.
With this bug I've lost 2 days trying to find a solution.
Related
I thought I'd try out the standard layered ASP.NET Core 3.1 Abp.io template available at: https://Abp.io
I've followed the setup instructions, running the migration scripts to create the host database in localdb, and am able to successfully load the UI.
I login with the default credentials, then I create a new Tenant under 'Tenant Management' in the UI. I specify a custom database connection string for that tenant.
I open SQL Server Management Studio and create an empty database matching this in localdb.
Next, I logout of the admin host user, then press 'switch tenant' and type in the tenant name I just created. It gets stuck on loading, and there's a bunch of SQL Exceptions, then finally it gives up and shows the unable to connect error.
What steps do I need to take to setup a separate database for a tenant? Are there any migration scripts I need to run after creating the empty database?
#Aidan, I think you need to run the DbMigrator again after creating a new Tenant using a newly introduced connection string. The migration tool should traverse the tenancy connection strings a apply the latest migration. Then you should be able to utilize the new Tenant. Hope that helps.
I have created an asp.net web api 4.5.2 project and I can't find the database that it's using for adding users. The info in the connection string:
Data Source=(LocalDb)\MSSQLLocalDB;AttachDbFilename=|DataDirectory|\aspnet-WebApplicationTest2-20160906022916.mdf;Initial Catalog=aspnet-WebApplicationTest2-20160906022916;Integrated Security=True.
But when I check the app_data directory it's empty. Where can I find this database?
Database creation for templates are delayed until a request is sent.
Run your server and POST following JSON with Content-Type: application/json header to http://localhost:xxx/api/Account/Register:
{
"Email": "test#test.com",
"Password": "TestTest1!",
"ConfirmPassword": "TestTest1!"
}
You should get 200: OK.
I am using Advanced REST client.
After that database will be created in App_Data folder.
If server returned 200: OK and App_Data is empty, Do the following steps:
In Visual Studio go to View menu. Select SQL Server Object Explorer(or press Ctrl+\, Ctrl+S).
Your SQL server should be there. You can find your database in Databases folder.
If you need specifically the data file, then expand Databases folder, right click on which one you need and click on Properties. Scroll down to see Current Connection Parameters.
Some times this error occurred when you do not install local db of SQL server.To know if you install local db,open command prompt(administrator) and type "SqlLocalDb info".Then it show localdb name.add that name into connection string.If command prompt is not show this,refer following link to add localdb into SQL express server.
link:-https://www.mssqltips.com/sqlservertip/5612/getting-started-with-sql-server-2017-express-localdb/
ASP.NET 5 project, Entity Framework 7. Using all the default stuff that comes with the ASP.NET 5 web template for creating the Identity Context. When I start up the app and first try to hit the context (register or log in), there is an error on Database.AsRelational().ApplyMigrations() that the database already exists. However, when I connect to the database matching the connection string in config.json, I do not see the database.
"ConnectionString": "Server=(localdb)\\mssqllocaldb;Database=aspnet-myAppDb;Trusted_Connection=True;MultipleActiveResultSets=true"
Connect to (localdb)\mssqllocaldb in SQL Server Management Studio, delete the database there. I'm not sure why this step is required or why the migrations fails, however.
There is an already accepted answer, but I prefer doing this from Visual Studio. This is caused by manually deleting the MDB file. For future reference, you should not delete the MDB files from Explorer, but instead use Visual Studio or SQL Server Management Studio to delete them.
In Visual Studio, hit Ctrl+\, Ctrl+S to bring up SQL Server Object Explorer. If your keybindings are different, look under the View Menu.
Expand the node for the type of localdb you are using, find your problem database, right click and delete. Problem fixed.
I am currently reading through a book about MVVM and I need to use the Northwind database for the next section. Unfortunately, when I try to add Northwind to my project, I get the following error:
"An error occurred while connecting to the database. The database might be unavailable. An exception of type 'Microsoft.Data.ConnectionUI.SqlDatabaseFileUpgradeRequiredException' occurred. The error message is: 'This database file is not compatible with the current instance of SQL Server.'"
I haven't installed an SQL Server, just Visual Studio 2012. The book instructs me to add the .MDF file to the project, set it as an Entity Data Model, and then to generate from database. It's on the next screen where I get the error. I use NORTHWND.MDF as the data connection and the entity connection string is as follows:
metadata=res:///Model1.csdl|res:///Model1.ssdl|res://*/Model1.msl;provider=System.Data.SqlClient;provider connection string="data source=(LocalDB)\v11.0;attachdbfilename=|DataDirectory|\NORTHWND.MDF;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework"
In the book, this reads:
metadata=res:///Model1.csdl|res:///Model1.ssdl|res://*/Model1.msl;provider=System.Data.SqlClient;provider connection string="Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\NORTHWND.MDF;Integrated Security=True;UserInstance=True"
I have tried using both data sources and neither work.
Also of note, the sample code that goes along with the book doesn't work either. It compiles and launches, but in the server explorer, NORTHWND.MDF has an 'x' in the icon and upon launch none of the data is there.
When I attempt to upgrade the database, I get an error saying:
"Database '...\NORTHWND.MDF' cannot be upgraded because its non-release version (539) is not supported by this version of SQL Server. You cannot open a database that is incompatible with this version of sqlservr.exe. You must re-create the database..."
If anybody could give me any tips on how to get this working, I would certainly appreciate it.
my simple way:
go to VisualStadio 2012
In Server Explorer Windows
open Data Connections
Right click on ASPNETDB.MDF
click on Modify Connection...
a new windows open for you ... you just click OK
if other windows open for you click Yes
FINISH ( be Happy ) :D
If we are trying to attach .mdf file in SQL Express mode in our development project and while adding .mdf file in App_Data folder we are getting exception like below :
"The database file is not compatible with the current instance of sql server...."
Then we can go to Server explorer window → go to Data connections → go to "your database" → right click on Modify connection → check the Data sources and Database file name, then use windows Authentication and press OK.
It works for me.
one way to potentially fix it is, install Sql Server 2012 Express and use database connection to sql server. Do not use local database. That might work. Just a suggestion.
Also as an extra note, you might want to download SQL Server 2012 Management Studio (I believe it comes with the above download as a component that you have select). With Management Studio Installed, you can test the database connectivity separately, create tables, run queries etc. This will make troubleshooting a lot easier.
Visual Studio doesn't install any database server by default so you can't connect to one. The MDF file is just the file where SQL Server stores its data, it's not a standalone database.
You have to install some version of SQL Server 2012 Express for both connection strings to work.
The first connection string uses the LocalDB feature which is essentially a minimal installation of SQL Server 2012 Exrpess (~ 35 ΜΒ). You can only connect to LocalDB from your machine which makes it useful only for development purposes.
The second connection string connects to an actual instance of SQL Server Express, called SQLExpress, installed on your local machine. The second connection string attaches the MDF file to the server as a User Instance, which means that the file is released when you stop using it.
The SQL Server Express downloads range from 130 MB to 1.3 GB depending on which version you download (minimal to full with advanced services).
Northwind database is not readily compatible with 2012, the compatible version of Northwind database for sql server 2012 can be downloaded from the below link, and after downloading .mdf file we can easily attach it with sql server 2012. I have found the following and it helped me, hope it will help you. How to Attach Northwind Database in Sql Server 2012
First go to data connection as on pic:1
2.Then browser your mdf file press ok and it will automatically convert the database.
picture:01
picture:02
Modify connection may solves the problem, but I am not sure whether the type of this database file is changed.
I have found a way to solve this problem if you have installed the database Server corresponding to the database file. You just need to change the default database Server of your visual studio.
On the menu, choose Tools-> Options -> Database tools, then on the data connections enter the SQL server Instance name corresponding to your database file which you have installed,then press Ok.
Next step is also important, it is necessary to click 'refresh' or delete the database filename in Data Connection and reopen the file, the file will be added to Data Connection again and open successfully.
This is what worked for me:
On the Add Connection dialog box, click Advanced.
Scroll down to the bottom and look for a field called Data Source.
Change it from (localdb)\MSSQLlocalDB to .\SQLEXPRESS.
Mainly looking to answer my question #1 below, but more knowledge would be appreciated.
I tried to use these resources during my investigation, but was unsuccessful:
http://social.msdn.microsoft.com/Forums/en/sqldatabaseengine/thread/f5eb164d-9774-4864-ae05-cac99740949b (For this error: Failed to generate a user instance of SQL Server due to failure in retrieving the user's local application data path. Please make sure the user has a local user profile on the computer. The connection will be closed.)
http://social.msdn.microsoft.com/forums/en-US/sqlexpress/thread/6dfdcc22-7a81-4e8f-a947-c1ce6982d4b3/ (For this error: CREATE DATABASE permission denied in database master. An attempt to attach an auto-named database for file ? failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.)
Questions
1.) Why does this error occur while running the Telerik Rad Controls for ASP.NET AJAX "Live Demos" project with IIS 7 (Running Telerik Live Demos works fine using ASP.NET Development Server with this connection string)
Failed to generate a user instance of SQL Server due to failure in retrieving the user's local application data path. Please make sure the user has a local user profile on the computer. The connection will be closed.
2.) How is creating a SQL Server Express instances different in IIS 7, from ASP.NET Development Server & SSMSE
3.) Are there certain attributes of a SQL connection string not allowed when running a website on different contexts (based on #2).
Environment:
I'm not running the "Live Demos" .NET 3.5 ASP.NET web application via the ASP.NET Development Server (feature that pops up in your system tray and picks a port for you after clicking play in Visual Studio). That works just fine! I'm running the website on IIS 7. SQL Server Express is using the NETWORK SERVICE user in Control Panel > Administrative Tools > Services > SQL Server (SQLExpress).
Using this connection string provided with the installed "Live Demos" web application demo project:
<add name="NorthwindConnectionString"
connectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|Northwind.mdf;Integrated Security=True;User Instance=True"
providerName="System.Data.SqlClient" />
I've tried setting "User Instance=False", but that just throws another error:
CREATE DATABASE permission denied in database master. An attempt to attach an auto-named database for file ? failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.
(where "?" is the path of the *.mdf file - C:\Users\\MyDocuments\Visual Studio 2008\Projects\TelerikDemos\Telerik\RadControls for ASP.NET AJAX Q2 2011\Live Demos\App_Data\Northwind.mdf .. Stack Overflow italics is broken with some of those characters, so I had to remove that path)
Someone answered me on a previous question to set this "User Instance=False", but it appears User instances have nothing to do with whether or not you use SQL Express. User Instances are simply a feature of SQL Express that allows a very unprivileged user to host a database instance in it's own user context.
Note, this Northwind database is stored in an *.mdf file in the App_Data folder (under the "Live Demos" root application directory) along with the *.ldf (log file). I did previously try attaching the *.mdf files as actual databases under the "Databases" folder (in the SSMSE Object Explorer tree), but later removed them.
Web application "Live Demos" root folder (and nested folders/files) have the following users assigned with ALL privileges:
- IIS APPPOOL\Telerik ("Telerik" is the name of my application pool in IIS 7 for this site)
- IUSR
- NETWORK SERVICE
Making a note for myself about this SQLExpress master database query:
SELECT * FROM sys.dm_os_child_instances
Also tried different combinations of *.mdf & *.ldf permissions while also changing the user on the SQL Server (SQLExpress) Windows 7 service (Control Panel > Administrative Tools > Services) .. and also restarted the service after making those changes.
To reproduce:
download the Telerik Rad Controls for ASP.NET AJAX. Set the permimssions I mentioned in the "Live Demos" folder under Program Files\Telerik, change the .NET version of the web application to .NET 3.5, switch out their 3.5 web.config file with the normal web.config file in that folder. You have to use Visual Studio 2010, but I am running this in Visual Studio 2008 (with a little grunt work I did because our company is not yet on VS2010). Also switch out the proper Bin35 assemblies into the "Live Demos" folder Bin folder. Compile the solution. Create an IIS 7 website. Add Windows authentication. Enabled anonymous and Windows authentication.. all others are disabled. Set application pool to use Classic and 32 bit.
Then navigating to this URL and clicking the "First Look" image.
http://localhost/combobox/examples/overview/defaultcs.aspx
====================
More evidence will be provided if requested.
You are using a connection string with trusted authentication = true. This means that the connection uses the security context of the calling process.
When you run with the development server you are running in the security context of the logged in user, so every thing works fine.
When you run in IIS you are in the security context of the application pool process, which is NETWORK SERVICE, which does not have a user profile, therefore it crashes.
You can fix it by either:
Change the identity of the application pool to a normal user with access to the database
Use a connection string with user name and password
IIS doesn't load the Windows user profile, but certain applications might take advantage of it anyway to store temporary data. SQL Express is an example of an application that does this. However, a user profile has to be created to store temporary data in either the profile directory or in the registry hive. The user profile for the Network Service account was created by the system and was always available. However, with the switch to unique Application Pool identities, no user profile is created by the system. Only the standard application pools (DefaultAppPool and Classic .NET AppPool) have user profiles on disk. No user profile is created if the Administrator creates a new application pool.
However, if you want, you can configure IIS application pools to load the user profile by setting the LoadUserProfile attribute to "true".
https://learn.microsoft.com/en-us/iis/manage/configuring-security/application-pool-identities