Database

| Id | Name | Pass   |
----------------------
|  1 | Kate | qwerty |
|  2 | Mike | asd$f5 |

"SELECT Name FROM Users WHERE Id=2"

using System.Data.SqlClient;
using System.IO;
using System.Text;
using Microsoft.SqlServer.Management.Common;
using Microsoft.SqlServer.Management.Smo;

namespace SqlExporter
{
class Program
{
static void Main(string[] args)
{
    var server = new Server(new ServerConnection {ConnectionString = new SqlConnectionStringBuilder {DataSource = @"LOCALHOST\SQLEXPRESS", IntegratedSecurity = true}.ToString()});
    server.ConnectionContext.Connect();
    var database = server.Databases["MyDatabase"];
    var output = new StringBuilder();

    foreach (Table table in database.Tables)
    {
        var scripter = new Scripter(server) {Options = {ScriptData = true}};
        var script = scripter.EnumScript(new SqlSmoObject[] {table});
        foreach (var line in script)
            output.AppendLine(line);
    }
    File.WriteAllText(@"D:\MyDatabase.sql", output.ToString());
}
}
}

Server.ConnectionContext.ExecuteReader
Server.ConnectionContext.ExecuteWithResults