Question

Where to add the connection string in a C# project? Like this string?

<connectionStrings>
    <add name="strConn" 
         connectionString="Data Source=abc;Password=pass;User ID=user" 
         providerName="Oracle.DataAccess.Client">
    </add>
</connectionStrings>

And how can I call it from my program.cs file?

Answer 1

This will be added in the configuration file. If it is an ASP.NET application, then this would be the web.config file. If it is a Winforms/Console application this would be the app.config file.

To call it from the application, you’d have to use the System.Configuration namespace like so:

using System.Configuration;

string YourConnectionString = 
    ConfigurationManager.ConnectionStrings["yourConnStringName"].ConnectionString;

Where "yourConnStringName" is the name of your connectionString in your config file.