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void GetParent(string path)
{
try
{
System.IO.DirectoryInfo directoryInfo =
System.IO.Directory.GetParent(path);
System.Console.WriteLine(directoryInfo.FullName);
}
catch (ArgumentNullException)
{
System.Console.WriteLine("Path is a null reference.");
}
catch (ArgumentException)
{
System.Console.WriteLine("Path is an empty string, " +
"contains only white spaces, or " +
"contains invalid characters.");
}
}