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:

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;
    public DateTime ToDateTime()
    {
    return DateTime.FromFileTimeUtc((((long)dwHighDateTime) << 32) | ((uint)dwLowDateTime));
    }

}

[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

);

private 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(@"c:\1.txt", 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.

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