C#

string path = @"C:\A\Path\To\A\File\moo.txt";
System.IO.FileStream fs = null;
Exception me = null;
try
{
  fs = new System.IO.FileStream( path,
                                 System.IO.FileMode.Open,
                                 System.IO.FileAccess.ReadWrite,
                                 System.IO.FileShare.Read );
}
catch( Exception )
{
  try
  {
    fs = System.IO.File.Open( path,
                              System.IO.FileMode.Open,
                              System.IO.FileAccess.Read,
                              System.IO.FileShare.ReadWrite );
  }
  catch( Exception e )
  {
    me = e;
  }
}
finally
{
  if( me != null )
  {
    Console.WriteLine( "Error: " + me.Message );
    System.Threading.Thread.Sleep( 10000 );
  }
  else
  {
    Console.WriteLine( "Read: " + fs.CanRead + Environment.NewLine +
                       "Write: " + fs.CanWrite );
    System.Threading.Thread.Sleep( 10000 );
    fs.Close();
  }
}