1Server=localhost;Database=MyDatabase;User Id=myUsername;Password=myPassword;```+
2
3Once you have the connection string, you can create a `SqlConnection` object and open the connection using the `Open` method. After that, you can perform various database operations such as executing SQL queries or stored procedures.
4
5Here's an example of how you can connect to a SQL Server database using .NET:
6
7```csharp
8using System;
9using System.Data.SqlClient;
10
11public class Program
12{
13    public static void Main()
14    {
15        // Connection string for connecting to a SQL Server database
16        string connectionString = "Server=localhost;Database=MyDatabase;User Id=myUsername;Password=myPassword;";
17
18        // Create a connection object
19        using (SqlConnection connection = new SqlConnection(connectionString))
20        {
21            try
22            {
23                // Open the connection
24                connection.Open();
25                Console.WriteLine("Connection opened successfully!");
26
27                // Use the connection to interact with the database
28                // ...
29            }
30            catch (Exception ex)
31            {
32                Console.WriteLine("Error: " + ex.Message);
33            }
34        }
35    }
36}