How to get File Created Date and Modified Date [duplicate]

Question

I have an .NET EXE file . I want to find the file created date and modified date in C# application. Can do it through reflection or with IO stream?

Gert

Have a look at the File class, should't be that hard: msdn.microsoft.com/en-us/library/system.io.file.aspx – Projective

Google gets a lot of result if you searched it first. – Broiler

Answer 1

You could use below code:

DateTime creation = File.GetCreationTime(@"C:\test.txt");
DateTime modification = File.GetLastWriteTime(@"C:\test.txt");

Pirtle

if i want to know the same thing with file bytes. how could it be? – Wideangle

Note--if it comes back with a minimum date it's probably because the file doesn't exist/invalid path, etc. (It doesn't throw an exception) – Tyrontyrone

Answer 2

You can do that using FileInfo class:

FileInfo fi = new FileInfo("path");
var created = fi.CreationTime;
var lastmodified = fi.LastWriteTime;

Galloromance

Per the link, "If you are performing multiple operations on the same file, it can be more efficient to use FileInfo instance methods instead of the corresponding static methods of the File class, because a security check will not always be necessary." – Curling

Answer 3

File.GetLastWriteTime to Get last modified

File.CreationTime to get Created time

Whorish

Answer 4

Use :

FileInfo fInfo = new FileInfo('FilePath');
var fFirstTime = fInfo.CreationTime;
var fLastTime = fInfo.LastWriteTime;

Handling

These things don't stand alone. The are part of a class. Which class? – Diaphane

The SystemIO class – Abomb

Answer 5

File.GetLastWriteTime Method

Returns the date and time the specified file or directory was last written to.

string path = @"c:\Temp\MyTest.txt";
DateTime dt = File.GetLastWriteTime(path);

For create time File.GetCreationTime Method

DateTime fileCreatedDate = File.GetCreationTime(@"C:\Example\MyTest.txt");
Console.WriteLine("file created: " + fileCreatedDate);

Knossos

Answer 6

You can use this code to see the last modified date of a file.

DateTime dt = File.GetLastWriteTime(path);

And this code to see the creation time.

DateTime fileCreatedDate = File.GetCreationTime(@"C:\Example\MyTest.txt");

Upsydaisy

just remember, there is a bug going back to the 90s in NTFS - windows OS gui - that mixes the created date with the modified date (ever wonder why they never fixed it?) – Emasculate