When I try to make a connection to a database and error occurs. The message is
"A network related or instance specific error occurred while establishing a connection to the SQL Server."
The database is located in the App_Data folder of the project.
Does anyone know how to fix this? Thanks.
If Database in App_Data then most likely a SQL Server Express database. Open SQL Configuration Manager on your local machine and start the SQL Express Service.
Related
I am able to access a .mdf file on local IIS. However, when I move it to the server under app_data, I can't. Am I missing a step?
Additional Information
The .mdf is under app_data on the server.
It appears like it is trying to connect, but cannot.
Connection string is as follows:
Public Const SQL_PRO As String = "Data Source=(LocalDB)\v11.0;AttachDbFilename=|DataDirectory|\MyDB.mdf;Integrated Security=True"
Update 2
Here is the Error Message. Sql Express 2008 is installed on IIS
A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 52 - Unable to locate a Local Database Runtime installation. Verify that SQL Server Express is properly installed and that the Local Database Runtime feature is enabled.)
Thanks,
Eric
In your VS Project, in solution explorer, choose the MDF and choose properties (Alt+Enter), for Copy to Output Directory, choose Copy Always. Im thinking your file isn't packaged when publishing.
Receiving below error message in Visual Studio 2008 while creating a connection for database.
could not load file or assembly
'microsoft.sqlserver.management.sdk.sfc ,Version=10.0.0.0,
Culture=neutral,PublicKeyToken=89845dcd8080cc91' or one of its dependencies.
The system cannot find the file specified.
I am trying to create database internally i.e. .mdf file and store it in the App_data folder.
But I'm not able to create the connection.
Please help me to sort out the issue quickly.
You can download these files from Microsoft website.
1.Microsoft SQL Server System CLR Types
2.Microsoft SQL Server 2008 Management Objects
3.Microsoft SQL Server 2008 Native Client.
After installing the above three files try to connect your application with sql server database and if still you got the same error message then don't worry and close your application then start it again and you will be able to connect it.
I opened my web project today and for some reason I could not gain access to my database files. I get the following exception whenever I try to add, edit or refresh my database:
A network related instance specific error occurred while establishing
a connection to SQL Server. The Server was not found or is was not
accessible. Verify that the instance name is correct and that SQL
Server is configured to allow remote connections.
I took a look at my connection string for any spelling errors and deleted my database and replaced it in the folder I had it in. I can't seem to find a fix for this so any help would be a appreciated. I am using Visual studio 2008 for this web project.
This sounds like the same problem that I had myself awhile back. My problem was that my SQL service pack 1 did not install properly so I had to install Microsoft SQL Server System CLR Types, Microsoft SQL Server 2008 Management Objects and Microsoft SQL Server 2008 Native Client. After that I could create new SQLdatasources but I could not edit the ones I had previously before my problem. I had to restart my computer in safe mode and delete my SQLEXPRESS folder then recreate the database connection in visual studios. When I finished that everything worked fine.
This is the site I got those downloads, http://blogs.cametoofar.com/post/cannot-load-file-or-assembly-microsoftsqlservermanagementsdksfc.aspx
I can't download SQL Management Studio on my laptop, so I gave up trying. I already have my database (got it from elsewhere) and I cannot connect it to my Visual Studio. It keeps giving me this error...
A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
I am wondering if it is a MUST to have SQL Management Studio if I want to connect my databse to the website I created in Visual Studio? I assigned/connected my data source = localhost.
When I downloaded Visual Studio 2010, only 3 files were included in the SQL Server 2008 folder..."SQL Server Configuration Manager", "SQL Server Error and Usage Reporting" and "SQL Server Installation Center".
no you don not need the Business management studio it to connect to databases in VS2010.
you do need Sql Server however.
you can try installing SQL Express (which is free)
If you're trying to connect to a database already running on another machine, it sounds like you need the native client.
Download it from here: http://www.microsoft.com/en-us/download/details.aspx?id=16978#SNAC
Here's the solution:
Click All Programs --> choose the Microsoft Server 2008 folder --> Configuration Tools --> SQL Server Configuration Manager --> SQL Server Services.
Now, make sure that the "State" of the SQL Server is "Running"
I am getting the above error when I upload my app to the hosting company.(asp.net)
DB is a local sql mdf in app_data directory.
on local asp.net dev server everything is ok.
I am using LINQ to SQL Classes, is there anything that can be related to that?
Thanks in advance
I think that the feature of attaching mdf files from the App_Data directory is a feature that is exclusive to SQL Server Express edition. Most likely your hosting company is using another edition of SQL server that does not support this.