I'm using Visual Studio 2010 and SQL Server 2012. When I try to connect to SQL Server through Visual Studio, I don't get my server name on Add connection drop down menu.
Go to SQL Server Management Studio to look for the correct Server Name and copy the value. Make all the configurations by yourself at the end just click Test connection button. If the connection is test successfully proceed with your work.
If the database is in your local machine, Just put a . (Dot) in Server Name and select the database.
run services.msc
find " SQL server browser " , it might be disabled , start that service and set it to automatic.
Insert machine_name/SqlServerName
For people using sql server 2014+ and using the local db on your pc. simply set the server name to be (localdb)\ name of your database. It worked for me.
Related
I've just finished a project with a SQL Serer database, so in my launch project I use this connection string
Data Source=(local);Integrated Security=True
And I check every time if database exists locally; if not, I execute a script to create the database and tables ... it works 100% without any problems.
But now I want to publish my project in Advanced Installer.. but when I try to install it on another PC, there was a error that said that I can't query database cause server is missing ...
I need the minimum prerequisite to add it in wizard installation, I've tried SQL Server 2005 Express, but it is still not working, the same error ...
Help me please ...
NB : I'm working with SQL Server 2014
You seem to have an unnamed default instance on your development PC so that you can connect to it using data source=(local).
When SQL Server Express is installed, by default, it uses a named instance of SQLEXPRESS, so your connection string should have
data source=(local)\SQLEXRPESS;....
in it, to connect to the SQLEXPRESS instance.
Or you need to change your SQL Server Express installation to install as the default, unnamed instance, too.
I'm trying to create a SQL Server database from Visual Studio Database Explorer. When I right click on Data Connections, the Create New SQL Server Database option remains grayed out.
I have VS Express 2012 and SQL Server Express 2012 installed in my system. SQL Server instance is up and running.
Do I need to configure anything, so that Visual Studio recognizes the installed SQL Server instance?
You first need to make a connection to the SQL Server before you can create a database.
Click the Add Connection option and connect to your SQL Server instance, then the option will become available on your connected Server.
I am trying to learn C# and then I hit this roadblock. My Visual Studio 2010 wont let me create a service based database (the .mdf file). (Add>New Item>Service-Based Database)
Everytime I try to add new .mdf it would bring up an error.
A network-related or instance-specific error occurred while
establishing a connection to the 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: 26 - Error Locating Server/Instance
Specified)
I can create a Local Database (Add>New Item>Local Database) without any problem, but I cant create .mdf
I am running on Windows 7 64bit OS and Visual Studio 2010 (Ultimate).
A service-based database needs to connect to a SQL Server instance. It's not built into Visual Studio, it's a separate application which needs to be running somewhere for you to connect to. That error message is basically telling you it can't find the SQL Server instance you're trying to connect to.
Local Database works correctly because it keeps everything local to your application and doesn't require an external database server to function.
Basic requirements for using these two kinds of databases:
Local Database (.sdf): requires SQL Server Compact. That is, you need only an additional DLL, but no special system service. (If you know SQLite: SQL Server Compact is conceptually the same thing, only more powerful and feature-complete.)
Service-Based Database (.mdf & .ldf log/journal file): requires a running instance of SQL Server or SQL Server Express, both of which are standalone products (as Tim Copenhaver points out in his answer). For development purposes, you'd typically install one of these products on your development machine.
Likely cause of your problem: Guessing from the error message that you posted, you do not have SQL Server, nor SQL Server Express, installed. However, an instance of one of these products is required so that you can "attach" your database to it. This is required in order before you can actually access the .mdf database.
To see whether you have SQL Server installed, you could e.g. open Control Panel → Administrative Tools → Services, and look out for a system service named "SQL Server (.\SQLEXPRESS)", or "SQL Server (YOURCOMPUTERNAME\MSSQLSERVER)", or similar. The name in the brackets is the name of the database instance running on your machine. SQLEXPRESS is the default instance name for SQL Server Express, while MSSQLSERVER is the default instance name for the full version of SQL Server.
If you do not have SQL Server installed, you can download e.g. SQL Server 2012 Express or SQL Server 2008 R2 Express with SP2 for free from Microsoft.
You can try
Go to Command Prompt from Start->Run(type cmd -> press enter)
Check SqlLocalDB by
Sqllocaldb.exe i
You will see version number like (v11.0) otherwise complete the
installation.
Create the sqldb by
sqllocaldb c dbname
You will see like "LocalDB instance "dbname" created with version 11.0."
Then Start the Db
sqllocaldb s dbname
You will see like "LocalDB instance "dbname" started"
See the created Db info
sqllocaldb.exe i dbname
Now try to create service-based database in c#.
To temporarily attach a database file (.mdf) from the Data Connections node
In Server Explorer, open the short cut menu for Data Connections and choose Add Connection.
The Add Connection dialogue box appears.
Choose the Change button.
The Change Data Source dialogue box appears.
Select Microsoft SQL Server Database File and choose the OK button.
The Add Connection dialogue box reappears, with Microsoft SQL Server Database File (SqlClient) shown in the Data source text box.
Choose the Browse button and browse to an existing .mdf file.
If you type a file name that does not exist, a blank .mdf file will be created.
Select either Use Windows Authentication or Use SQL Server Authentication.
For more information on SQL Server database access authentication, see Create New SQL Server Database Dialogue Box.
Choose the OK button.
The database appears in Server Explorer.
I just build my first web-application in asp.net that connects to a local database.
I got a weird problem.
The connection to the database works if i open the website BEFORE sql server after reboot. I can insert/read from the db from my webpage. But then sql server cant connect to the db. It looks like this then:
If i start sql server before the website then sql server works but the webpage doesnt work, visual studio then gives me this error:
Why are they interfering with each other and what can i do about it?
I use visual studio 2010 and sql server 2008 R2.
did you try to open your connection through server explorer from visual studio 2010 ? everytime you want to display the page in an web browser..just make sure you open the database connection through server explorer, it will work...no matter what was the order of your starting sql server.
How can I connect to a database in Visual Studio with Entity Framework?
I have a database:
But in visual studio I don't know what I must enter.
I have a window:
Can You say what I must write there?
I tried many times and I still have error.
A dot (aka period), like this: .
If you have SQL Server Express installed, it should be .\sqlexpress
Use the Server explorer. See http://msdn.microsoft.com/en-us/library/x603htbk.aspx
You can choose the instance name when you install SQLServer Enterprise or SQLServer Express. I think it is the same for other database.
In the other hand, you can add a new database just in Visual studio project. Then you will get a MDF file in the resources list, which can be added here.
I don't know if I understood you, but those fields are about the server where the database is
Server name is the name o the server that appears on SQL Managment Studio (probably the name of the machine the server is running on)
When you open SQL Server Management studio you can a popup as shown below:
The server name that you use there should be the one you can use in your case. If the SQL Server database is installed on your machine it would be (local) or your machines name which can be found by right clicking on "My Computer" and then Properties and you can see "Computer Name" in the window that opens.