Visual Basic Get File Created Date
Hi All, Can anybody tell me how to read the properties of a saved file using VBA. Specifically I want to read the date created property of an external. Get Files in Directory by Date or Size. Visual Basic.NET. (modification date or creation date). What I need is a way to get the name of all the files in a. MS Access 2K, Windows XP ===== Hi, I've been trying to get the file create date stamp using code on a form. I've tried using.
It is completely up to the file system to determine how this behavior works and the behavior has changed over the OS releases. Copying a file creates a new copy of the file and so the create/modify dates will be changed. Moving a file might or might not create a new file so the behavior depends.
Saving a file in a program (such as notepad) will generally delete the old file and create the new file so both create/modify dates will change but each program is free to do what it wants.NET calls down to the file system to get the file information. Therefore whatever Win32 says the values are is going to be what you get. If Win32 is returning back different values then there is no way to get the alternate values you're seeing. Under Windows 8 if you copy a file from one folder to another then the underlying metadata is copied (from what I can see) so the modify date won't change. I am unable to replicate the issue you're seeing.
If you can post some code that replicates the issue that would be useful. Here's the same code I used: var origFile = new FileInfo(baseFilename); var newFile = new FileInfo(newFilename); var filesAreEqual = origFile.LastWriteTimeUtc newFile.LastWriteTimeUtc; Note that if you are copying files across file systems then the modify date will most likely change. Also note that if you're using FileInfo then the information is cached so if you modify the file you'll need to call Refresh to get it to refresh the data you're seeing. Michael Taylor - 2/23/2013. Do you use Windows XP?
I need to find file in folder what was modified later then all. Everything allright when I change it f.e with notepad. But If I just copy this file (in Windows) from one folder to other. All of method in C# classes File, Directory, FileInfo (GetCreatedTime, GetLastAccessTime, GetLastWriteTime) return one same date(the date of copy). But if you call properties of that file(in Windows) you will see that there will be 'modified' date but not refreshed after copying!
Please try it in your Windows. And you will see. I read that everything allright in WindowsXP but not in Windows 7.
It is completely up to the file system to determine how this behavior works and the behavior has changed over the OS releases. Copying a file creates a new copy of the file and so the create/modify dates will be changed.
Moving a file might or might not create a new file so the behavior depends. Saving a file in a program (such as notepad) will generally delete the old file and create the new file so both create/modify dates will change but each program is free to do what it wants.NET calls down to the file system to get the file information. Therefore whatever Win32 says the values are is going to be what you get.
If Win32 is returning back different values then there is no way to get the alternate values you're seeing. Under Windows 8 if you copy a file from one folder to another then the underlying metadata is copied (from what I can see) so the modify date won't change. I am unable to replicate the issue you're seeing. If you can post some code that replicates the issue that would be useful. Here's the same code I used: var origFile = new FileInfo(baseFilename); var newFile = new FileInfo(newFilename); var filesAreEqual = origFile.LastWriteTimeUtc newFile.LastWriteTimeUtc; Note that if you are copying files across file systems then the modify date will most likely change. Also note that if you're using FileInfo then the information is cached so if you modify the file you'll need to call Refresh to get it to refresh the data you're seeing. Michael Taylor - 2/23/2013.
VBnet File API SetFileTime: Modify the Date/Time of Folders and Files Visual Basic File API Routines SetFileTime: Modify the Date/Time of Folders and Files Posted: Saturday September 21, 2002 Updated: Monday December 26, 2011 Applies to: VB4-32, VB5, VB6 Developed with: VB6, Windows XP OS restrictions: Windows NT/2000/XP Author: VB net - Randy Birch Related: Prerequisites Windows NT4, Windows 2000 or Windows XP. Changing the created, accessed or modified date of files or folders under Windows NT, 2000 or XP requires only a few simple API calls. By using CreateFile's special FILEFLAGBACKUPSEMANTICS flag we can obtain a handle to a folder or file and, with SetFileTime, change its created, accessed or modified dates. When dealing with folders, the created date is reflected in the folder's property window, while Explorer shows the modified date (which under normal circumstances is always the same as the created date). Under Windows XP at least, the last accessed date of a folder is never shown. To change the folder or file time, the SYSTEMTIME structure is populated with the day, month and year, and hour, minute and second of the desired date / time.
However, when those values are used directly in a call to SetFileTime, Windows interprets the values passed as reflecting a Universal Coordinated Time (UTC) - aka a time at Greenwich mean time (GMT). In order for the date / time entered to be properly reflected with the SetFileTime call, the values contained in the SYSTEMTIME structure must first be converted to a FILETIME structure via SystemTimeToFileTime, and then the system must apply the local system's time-zone bias via LocalFileTimeToFileTime. Once the FILETIME structure has been changed, it is passed to SetFileTime and the new folder or file date / time is set. Note that the code used in this method differs considerably from that used to change a file's created, accessed or modified date / time under Windows 9x (a method which is also applicable to NT-based machines), in that this method requires obtaining the folder's handle via CreateFile with the NT-specific FILEFLAGBACKUPSEMANTICS flag set. The 9x-compatible method uses OpenFile to obtain the file handle where the FILEFLAGBACKUPSEMANTICS flag is not supported. Command1 ('New Date') is provided as a convenience to rapidly test this code and just calls a routine to randomly select values from the combo.
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Command2 ('Change Date') executes the APIs responsible for the date change. BAS Module Code None. Form Code The form consists of three text boxes (Text1 - Text3), two command buttons (Command1, Command2) and six combo boxes (Combo1 - Combo6).
Label as desired and add the following code: Option Explicit ' ' Copyright ©1996-2011 VB net/Randy Birch, All Rights Reserved. ' Some pages may also contain other copyrights by the author.
Visual Basic Get File Name From Path
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