Way to get unique filename if specified filename already exists (.NET)

Question

Is there a built in .NET function to get a unique filename if a filename already exists? So if I try and save MyDoc.doc and it already exists, the file will sav

Answer 1

EDIT:

Here's another solution I came up with after Steven Sudit's comment:

static void Main(string[] args)
{
    CopyFile(new FileInfo(@"D:\table.txt"), new FileInfo(@"D:\blah.txt"));
}

private static void CopyFile(FileInfo source, FileInfo destination)
{
    int attempt = 0;

    FileInfo originalDestination = destination;

    while (destination.Exists || !TryCopyTo(source, destination))
    {
        attempt++;
        destination = new FileInfo(originalDestination.FullName.Remove(
            originalDestination.FullName.Length - originalDestination.Extension.Length)
            + " (" + attempt + ")" + originalDestination.Extension);
    }
}

private static bool TryCopyTo(FileInfo source, FileInfo destination)
{
    try
    {
        source.CopyTo(destination.FullName);
        return true;
    }
    catch
    {
        return false;
    }
}