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GetFileTime (kernel32)

C# Signature:

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:




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;

    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();
        ptr = CreateFile(FileName, GENERIC_READ, FILE_SHARE_READ, IntPtr.Zero, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, IntPtr.Zero);
        if (ptr.ToInt32() == INVALID_HANDLE_VALUE)
        if (GetFileTime(ptr, ref ftCreationTime, ref ftLastAccessTime, ref ftLastWriteTime) != true)
        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);
        if (ptr !=IntPtr.Zero && ptr.ToInt32() != INVALID_HANDLE_VALUE) CloseHandle(ptr);

Alternative Managed API:

class System.IO.FileInfo,

members CreationTime and others.

GetFileTime on MSDN

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