@msdn=http://search.microsoft.com/search/results.aspx?qu=$$$ @pinvoke=http://pinvoke.net/$$$.htm Summary: The GetFileTime API !!!!C# Signature: [DllImport("kernel32.dll")] static extern bool GetFileTime(IntPtr hFile, IntPtr lpCreationTime, IntPtr lpLastAccessTime, IntPtr lpLastWriteTime); !!!!VB.Net Signature: <DllImport( _ "kernel32.dll", _ CharSet:=CharSet.Auto, _ SetLastError:=True)> _ Friend Shared Function GetFileTime( _ ByVal hFile As IntPtr, _ <Out()> ByRef lpCreationTime As FILETIME, _ <Out()> ByRef lpLastAccessTime As FILETIME, _ <Out()> ByRef lpLastWriteTime As FILETIME) _ As Boolean End Function !!!!User-Defined Types: None. !!!!Notes: None. !!!!Tips & Tricks: Please add some! !!!!Sample Code: public class GetFileTimeSample { private const uint GENERIC_READ = 0x80000000; private const uint FILE_SHARE_READ = 0x1; private const uint FILE_ATTRIBUTE_NORMAL = 0x80; private const int INVALID_HANDLE_VALUE = -1; private const uint OPEN_EXISTING = 3; [StructLayout(LayoutKind.Sequential)] private struct FILETIME { public uint dwLowDateTime; public uint dwHighDateTime; } [DllImport("kernel32.dll", SetLastError = true)] [return: MarshalAs(UnmanagedType.Bool)] private static extern bool CloseHandle( IntPtr hObject ); [DllImport("kernel32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall, SetLastError = true)] private static extern IntPtr CreateFile( string lpFileName, uint dwDesiredAccess, uint dwShareMode, IntPtr SecurityAttributes, uint dwCreationDisposition, uint dwFlagsAndAttributes, IntPtr hTemplateFile ); [DllImport("kernel32.dll", SetLastError = true)] private static extern bool GetFileTime( IntPtr hFile, ref FILETIME lpCreationTime, ref FILETIME lpLastAccessTime, ref FILETIME lpLastWriteTime ); public static void GetFileTimes(string FileName, out DateTime CreationTime, out DateTime LastAccessTime, out DateTime LastWriteTime) { CreationTime = DateTime.MinValue; LastAccessTime = DateTime.MinValue; LastWriteTime = DateTime.MinValue; IntPtr ptr = IntPtr.Zero; FILETIME ftCreationTime = new FILETIME(); FILETIME ftLastAccessTime = new FILETIME(); FILETIME ftLastWriteTime = new FILETIME(); try { ptr = CreateFile(FileName, GENERIC_READ, FILE_SHARE_READ, IntPtr.Zero, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, IntPtr.Zero); if (ptr.ToInt32() == INVALID_HANDLE_VALUE) Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error()); if (GetFileTime(ptr, ref ftCreationTime, ref ftLastAccessTime, ref ftLastWriteTime) != true) Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error()); CreationTime = DateTime.FromFileTimeUtc((((long)ftCreationTime.dwHighDateTime) << 32) | ((uint)ftCreationTime.dwLowDateTime)); LastAccessTime = DateTime.FromFileTimeUtc((((long)ftLastAccessTime.dwHighDateTime) << 32) | ((uint)ftLastAccessTime.dwLowDateTime)); LastWriteTime = DateTime.FromFileTimeUtc((((long)ftLastWriteTime.dwHighDateTime) << 32) | ((uint)ftLastWriteTime.dwLowDateTime)); } catch (Exception e) { throw (e); } finally { if (ptr !=IntPtr.Zero && ptr.ToInt32() != INVALID_HANDLE_VALUE) CloseHandle(ptr); } } } !!!!Alternative Managed API: class System.IO.FileInfo, members CreationTime and others. Documentation: GetFileTime@msdn on MSDN
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