C#

private void Page_Load(object sender, System.EventArgs e)
{

    // using System.IO
    // make a reference to a directory
    DirectoryInfo di = new DirectoryInfo("C:\\program files\\");

    // get a reference to each directory in that directory
    DirectoryInfo[] diArr = di.GetDirectories();

    // print out the names of the directories
    foreach (DirectoryInfo dri in diArr)
    {
        //this example outputs to the console, but you can use
        //dri.Name to allocate values to labels etc etc
        labelPath.Text=dri.name;
    }

}

<br />
// print out the names of the directories<br />
string strLabelText = string.Empty;<br />
foreach (DirectoryInfo dri in diArr)<br />
{<br />
  //this example outputs to the console, but you can use	<br />
  //dri.Name to allocate values to labels etc etc<br />
  strLabelText += dri.Name + "[BR]"; //try /n if [br] doesnt work<br />
}<br />
<br />
labelPath.Text = strLabelText;<br />

<br />
// print out the names of the directories<br />
foreach (DirectoryInfo dri in diArr)<br />
{<br />
  //this example outputs to the console, but you can use	<br />
  //dri.Name to allocate values to labels etc etc<br />
  labelPath.Text += dri.Name + "[BR]"; //try /n if [br] doesnt work<br />
}<br />

<br />
public class MySettings<br />
{<br />
  public static string MyDbConnectionString;<br />
  public static string SomeOtherSettings;<br />
}<br />

1. Your app will break if you move to a new version of the framework, but forget to update the machine.config for that version of the framework. Or worse, another application does the same thing, but storing a different connection string.
2. You are taking something that should be local, and making it global. You wouldn't want your connection strings entered into another application so you should keep them local to the apps that need it.

<br />
FileInfo launchfi = new FileInfo("myprogram.exe");<br />
if (launchfi.Exists)<br />
{<br />
  Process mainapplication = new Process();<br />
  mainapplication.StartInfo.FileName = launchfi.FullName;<br />
  mainapplication.StartInfo.WorkingDirectory = launchfi.Directory.FullName;<br />
  mainapplication.StartInfo.UseShellExecute = false;<br />
<br />
  try<br />
  {<br />
    mainapplication.Start();<br />
  }<br />
  catch<br />
  {<br />
    MessageBox.Show("Unable to start application.");<br />
  }<br />
}<br />