using System.Text;
using System.Text.RegularExpressions;

/// 

/// Check if filename is valid on Win32 platforms (does not contain invalid characters)
/// 
/// Name of the input file.
/// 
///     true if input filename is valid otherwise, false.
/// 
public bool IsFilenameValid(string inputFileName)
{
    Match m = Regex.Match(inputFileName, @"[\\\/\:\*\?\" + Convert.ToChar(34) + @"\<\>\|]");
    return !(m.Success);
}