C Connection String For Local Database Not Working Stack Overflow In my c# application, i have a connection string to connect to this database. i get an error though saying my connection string is incorrect. i have tried a number of different ones. this is my function to connect to a database. con = new sqlconnection();. I'm not able to connect to localdb using microsoft.data.sqlclient. the following is my simple test connection setup. it's a simple connection string that every microsoft sample is quoting: so, it should work off the cuff. but it doesn't.

C Connection String For Local Database Not Working Stack Overflow If you're working in a code first mode, this element eliminates the need for you to define a database and create a connection string for your dbcontext object. instead, the first time you access your data, entity framework will create your database for you, using localdb as your database engine (assuming you're using visual studio 2012 or later). Here is my connection string that worked for the 3.1.22 version (uses sqlclient version 1.1.3 ): server=127.0.0.1;user id=user;password=password;database=db;trusted connection=true;. I'm trying to connect to sql server express localdb from core 6 on windows 11 arm. if i use a connection string that refers to it using the instance name "data source= (localdb)\mssqllocaldb", it fails with the exception below. if i connect to it using a named pipe, it works. In visual studio, on the tools menu, can you connect to the database? your database should be appearing in the server explorer, where you can find the correct connectionstring.

Sql Server Database Connection Not Working In C Stack Overflow I'm trying to connect to sql server express localdb from core 6 on windows 11 arm. if i use a connection string that refers to it using the instance name "data source= (localdb)\mssqllocaldb", it fails with the exception below. if i connect to it using a named pipe, it works. In visual studio, on the tools menu, can you connect to the database? your database should be appearing in the server explorer, where you can find the correct connectionstring. I am working in visual studio 2012 3.5 connecting to a local db instance to test with. if i use string cnn = @"context connection=true"; using (sqlconnection connection = new sqlconnection(cnn)) { connection.open(); i connect and my code works. i now need to add a sqlbulkcopy to this solution. to do this i switch the connection string to :. I have a local sql server database that i'm trying to connect to via the connection string in my application in c#. i have tried with this connection string, i have left password blank because i have no password given in sql login credentials:. You can't just "append it to the connection string". you'd have to parse the connection string, extract the data source value, prepend the current directory and then rebuild the connection string. 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).