Hi,
Whatever the database it is, you should pass appropriate connection string for open the connection to sql server, for NorthWind database you need to download Microsoft free sample Northwind database and Install the same, refer below link to understand more about downloading and installing.
http://www.aspsnippets.com/Articles/Install-the-Northwind-and-Pubs-Sample-Databases-in-SQL-Server-Express.aspx
Once Installing done successfully then you need to open connection string for fetch the data from database and bind the same to your controls.
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