How to open a database in asp.net web forms?

Question

I need to open a pre-existing Database in ASP.NET Web Form with C#. So far all I have managed to find, are tutorial's on how to make a new Database and Table's.

If anyone know's how to do this please let me know.

Thanks'

Answer 1

1. Open a connection to the database. You will need the proper connection string. The place to go is ConnectionStrings.com.

   SqlConnection conn = new SqlConnection(yourConnectionString);

2. Create a command

    string yourSQL = "SELECT FirstName FROM Employees";
   

   SqlCommand cmd = new SqlCommand(yourSQL, conn);

3. Do something with it..

   • execute a DataReader
   • fill a table with a DataAdapter

That's the basic pattern.

Answer 2

Add a connection string to web.config and then Write the connection code.

The following is a good place to start for the conn string and the code: https://www.connectionstrings.com/sql-server-2012/