C#

private bool isReadOnly = false;
public bool ReadOnly
{
  get
  {
    return isReadOnly;
  }
  set
  {
    isReadOnly = value;
    
    // Set all applicable controls ReadOnly property to isReadOnly
    textBox1.ReadOnly = isReadOnly;
  }
}

for(int i = 0; i < arrlstApts.Count; i++)
{
  Point[] apt = (Point[])arrlstApts[i]
}

string m_CurrentDirectory = "C:\";
string[] AllFiles = Directory.GetFiles(m_CurrentDirectory, "*.*");
foreach (string aFile in AllFiles)
 {
   string aFileName = GetFileNameFromPath(aFile);
   this.listBox1.Items.Add(aFileName);
 }

public void SearchHardDrive(string harddrive)
{
  DirectoryInfo di = new DirectoryInfo(harddrive);
 
  SearchDirectory(di);
}
 
private void SearchDirectory(DirectoryInfo di)
{
  DirectoryInfo [] dirs = di.GetDirectories();
  foreach(DirectoryInfo dir in dirs)
  {
    SearchDirectory(dir);
  }
  
  FileInfo [] files = di.GetFiles();
  foreach(FileInfo file in files)
  {
    DoSomethingWithFileInfo(file);
  }
}
 
private void DoSomethingWithFileInfo(FileInfo file)
{
 
}