using System;

using System.Data.SqlClient;

public class Program

{

    public static void Main()

    {

        var connStr = @"Server=win-hrc9k65tspc\SQLEXPRESS;Initial Catalog=OneSource; Trusted_Connection=Yes; User ID=sa;Password=k0Fax";

​

        try

        {

            var cnb=new SqlConnectionStringBuilder(connStr);

            Console.WriteLine($"Valid: Server={cnb.DataSource}, DB={cnb.InitialCatalog}");

            Console.WriteLine($"Original: \n{connStr}");

            Console.WriteLine($"Normalized: \n{cnb.ConnectionString}");

        }

        catch (Exception ex)

        {

            Console.WriteLine($"Not valid: {ex.Message}");

        }

    }

}