I have an application that runs, scans a webpage for links to PDF files, and downloads those files (using WebResponse). I want to modify it so that it ONLY downloads the file IF it has been changed since my program ran last. So, given that I have the file name:
[URL]
How can I determine the creation and last modified date of that file? Preferably WITHOUT downloading the file, of course.
Here is my current file
Public
Class Form1
Dim ScreenData(3, 4) As TextBox
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
FileOpen(1, CurDir() &
[Code]...
I'm trying to write out a date like this 09-16-2008 so I can put the date in the name of a directory. Here is my code:
Code:
Dim aDate As Date
aDate = Date.Today
aDate.ToString("MM dd yyyy")
[Code].....
I can't seem to get the leading 0 in front of the month if it's a single digit. I can't get rid of the time, and I can't get the dashes.
From within my VB 2008 windows forms app, how would I check the date (i.e. modify date) of a file on a website (i.e. "www.mysite.com/somefile.txt")?
View 1 RepliesI have encountered a wierd problem, and I'm unsure if this behaviour is caused by my code or by Windows itself... I can't make any sense of it! Basically, I have written an automated backup system for a text editor. It should save up to 5 backups for each filename, each in a 'AutoBackup<filename><filename>_<number>.bak' format. Here, <filename> is simply the name of the file my program is backing up, and <number> is the first 'free' number. So if the backups are "Test_1, Test_2, Test_4, Test_5", the next backup will be called "Test_3" (since 3 was 'missing'). When there are more than 5 backups, I want my code to delete the oldest files until there are again 5 backups left. I am using the following code for this:
vb.net
'Backup doc.SaveFile(path & "" & filename & "_" & newNum & ".bak") 'If more than max files, delete oldest Do While numOfFiles > maxBackups Dim d As Date Dim maxDate As Date = Date.MaxValue Dim oldestFile As String =
[code].....
Then, after another backup, Test_1.bak is again deleted!I thought this was pretty weird so I had a look at the files in windows explorer, taking a good notice of the creation date... That's when I saw that after Test_1.bak is created a second time (after a file named Test_1.bak was deleted), it carries the same creation date/time as the old (deleted) Test_1.bak..So my code still sees it as the oldest file (while it is actually the newest) and deletes it...
I'm trying to compare the modify date of a file vs the current system date. I've found an MSDN article describing how to get the modify time of a file:
Dim infoReader As System.IO.FileInfo
infoReader = My.Computer.FileSystem.GetFileInfo("C: estfile.txt")
MsgBox("File was last modified on " & infoReader.LastWriteTime)
This gest the Date and Time, but I want just the Date not the time.
how can i make it like IF (todays date is passed a specific date) then basically what i need is to see if the date is passed a static date i set in the vb code.
View 2 RepliesIn the TableAdapter configuration wizard I am using this query:
Code:
SELECT AttendanceID, StudentID, ClassId, DateOfClass, Absent
FROM Attendance
WHERE (DateOfClass BETWEEN #5/1/2010# AND #5/30/2010#)
Can tell me the correct syntax to change the #5/1/2010# AND #5/30/2010# so the WHERE clause uses dteStartDate AND dteStartDate which are date variables ?
I tried this but it tells me I need to use the to_date function. dteStartDate is already a date variable so I know my syntax is wrong.
Code:
SELECT AttendanceID, StudentID, ClassId, DateOfClass, Absent
FROM Attendance
WHERE (DateOfClass BETWEEN #" & dteStartDate & "# AND #" & dteEndDate & "#)
Title pretty much says it all. How do I format the date of a dateandtimepicker to insert it into the SQL date datatype?
View 20 RepliesI am creating a program that allows a person to enter details about their farm, stock, and machinery in order to electronically keep track of all of the information. I have created the forms and done all the coding for the data entry, and now what I would like to do is allow the user to delete a single record from the .dat file. I am able to delete it from the LstBox (using a "Delete Entry" btn coded simply with
lstvehicles.Items.RemoveAt(lstvehicles.SelectedIndex)
(using the vehicles section for examples)), but I am unsure of how to delete it from the .dat file as well, to prevent it reloading upon data change / program reload. Also I would like to be able to have a reminder come up on the program start up that gives a reminder to (in the vehicles instance)when a vehicles rego is due, the date being associated to a date that is entered into the same lstbox data using a datetimepicker.
I have found many pages referring to having the date be part of a txt file being created, but not like the way I need. Having said that, this is what I've got.. [code] I read a page on working with txt files and learned what I could from it. It said to use the method in the beginning of my code for creating the file. It works great, but I would like to have a new file name everday, hence the date being integrated. So even if program was running, when midnight hits, a new txt file is created and new entries are written to that file. But I can't even get the date to be put in there. Everytime I try to make this work by using methods I read about in other pages, I get a syntax error, or a warning saying an end of statement is expected. I'm not sure those methods are compatible with what I've already got going.I was actually trying to store these values in a database, and I got real close I think, but I couldn't get any help to fix my problem so I'm trying to write to daily txt files instead. url....
View 6 Repliesi m developing a window application using vb.net & ms sql server 2008. The date is by default mm/dd/yyyy. But i wanna change this to dd/mm/yyyy. How is it possible and where do i hv to make changes?
View 3 RepliesThis has become a major headache for me.
I am simply trying to add the days date to a filename.[code]...
I have also tried inserting , now and today .If I add just one instance of datetime.now.day it works, anymore gives me a DirectoryNotFoundException)
I have a number of files in a folder, I need to get the last modified date. So I used FDate = IO.File.GetLastWriteTime(FName) Works fine with some files, but on others, I get a date of 1/1/1601. But when I check the files in Windows Explorer, all the dates look normal (recent). So, I'm gessing there are multiple files dates stored in the file system, and the ones dotnet is seeing are not the ones windows is seeing. How can I get exactly the date which appears as "date modified" in a file explorer window? I tried some vb6 api stuff but that doesn't seem to work in dotnet.
View 2 RepliesI have a files list which contain the directory of file. I want to know file creation date of that files. I used fileInof.CreationTime. But It is not displayed creation date. How I can know about this.
[Code]...
When scanning a data file of this kind of form:
21/02/11 11:00:23, true, false
22/02/11 02:03:43 AM, true, false
22/03/11, false, false
2011-05-21T12:30:20, true, true
The 2nd and 3rd row are not important. How can you, by scanning a file, determine if a row comprises of dates, particularly when they have inconsistent formats? In the example above, for instance:
1) 1st line is date and time
2) 2nd line is date and time but also AM/PM
3) 3rd line is only date
4) 4th line is GMT format.
I'm not requesting code, but perhaps an algorithm or some guidelines on how to achieve this.
I have a file with many pieces like this[code]...
I need about eleven values from eleven lines which are always at the end of tke line and is always between ""
Is it possible to geht the date, when a xml-file last time was changed. I mean the date, which you can see, if you right-click the file and click properties.
View 1 RepliesI am trying to parse a date from a file name.The File's Name is like "FILE_NAME.20110831..No extension or antything.[code]
View 3 Replieshow I can ensure that conversion of a date to a string and a string to a date will give me the same date format.
For example:
Code:
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
Dim d As Date = Date.Now
[code].....
I'm actually only interested in the date part as the label text shows so f is more than I want.But also, the day and month are reversed.
I have a program i wrote today, it works just as i wanted it to, with exception of one problem. Im more looking for some ideas on this one. For my work, we have folders on a drive that are filled with txt files, what we wanted to do was to add the last date it was modified to the top of the file so people would know when it was last modified. These files are used on CNC machines and the those people cant look at a last modified date as easy as the computer user can, just a short explanation of why we wanted to do this. So i wrote a program to do it, loop through each file in the user selected folder and add a date to the top of it, works perfect. Now here is the issue, when i write the last mod date to that file, the last mod date on the file changes to that day. For example, if i have a file in there that was modified January 28th 2011, the program reads that file, then on the top of the file it prints that date, January 28th 2011, but then that same file gets changed to the current date as a modified date, so if the program i wrote is used again on the same folder the next day, those files will all end up getting the previous days date on the top. I dont want that! I guess im wondering if there is a way to tell the files mod date not to get updated when its run through my program, it should only update when changed some other way, like someone actually opens it, changes stuff and hits the save button.
View 14 RepliesI'm trying to save a files save date, modify that file and then restore the file back to it's original date. I can't get it to work, I've tried it several ways and cannot get it to work.
My code so far is
origdate = My.Computer.FileSystem.GetFileInfo("inspection").L astWriteTime.ToShortDateString()
' changing file content here
System.IO.File.SetLastAccessTime("inspection", origdate)
be able to check if an application i am writing has been run on a week by week basis. i have created a button that when pressed creates a text file with nothing in it, i can read back the date it was created which also gives me the time which i dont need, i then need to compare the date the file was created to see if it is older than 6 days if so delete the file. how can i check to see if a creation date is older than six days???
View 9 Replieshow to get the highest date of txt file how to get the max value of arrayForTheLine(3) in 14 lines( that's mean count highet date line - 14) and when i get the max how to get the date of the line that has the max value this the file
<ticker>,<date>,<open>,<high>,<low>,<close>,<vol >
aaaa,20100919,19.8,19.95,19.7,19.7,222643
aaaa,20100918,20.05,20.1,19.75,19.9,174402
aaaa,20100915,19.8,19.9,19.65,19.9,351537
[code]....
Im trying to move all files from "C:SSISTest1" that are new than 2 days old to the C:SSISTest" but for some reason it keeps skipping over the if statement marked in red.
Sub Text()
Dim sDay As DateTime
sDay = DateAdd(DateInterval.Day, -2, Date.Now)
[Code].....
I want to open a file from a folder by using the date modified properties in a file.
View 2 RepliesI don't think the, System.Collections.ObjectModel has any sort or order by capability.
I have a list of files and I'd like to sort by the file date.
Dim list AS System.Collections.ObjectModel.ReadOnlyCollection(Of String)
list = My.Computer.FileSystem.GetFiles("C:SearchFolder" _
, FileIO.SearchOption.SearchByTopLevelOnly _
[Code]...
This returns the last file, but based on file name and not date. I think I need to add .OrderBy(... just can't get that part.
I'm using VB.net 2003 Standard Edition, and I'm trying to retrieve the file modified date. I've created a System.IO.FileInfo object, and have collected info from the three methods: CreationTime, LastAccessTime, and LastWriteTime, but they aren't giving me the same data as XP Windows Explorer is.In Explorer, there is a Date Modified field (currently reading 2008 on the file in question), but using the FileInfo methods they return 2007, 2009, 2009.Is there another IO object I can use to get this 'modified' date?
View 1 RepliesI am working on an application in vb.net to move files back and forth between a client and a ftp server. We will be creating, deleting, and renaming temporary files during our update process.I want to check for the existence of a temp file before I begin an upload process to keep different users from trying to update the same file at the same time. I have a method (below) to check if the FTP file exists (using ContentLength), but I want to be able to pass in a string with a wildcard such as:
FileServer.FtpFileExists("MyTestFile.*.txt") Can I use a wild card with a FtpWebRequest object? What about a regular expression? Or should I pull down the directory(between 200-500 files) and iterate through that list on the client side trying to match with a regex/widcard? 'Find if File exists from FTP Server for File specified Private Function FtpFileExists(ByVal RemotePath
[code]....
I have a web project in asp.net in which i have dashboard on which there are dropdownlists with previous seven dates and when i select the date from dropdownlist it opens the file from folder matching with date selected.My dropdownlists are arranged vertically.A strange problem is that when i select the date from ist dropdownlist it opens the file fine and when i select the date date value from any other dropdownlist it opens the same file which opened from the ist dropdownlist all remaining dropdowlists behave same like.And other strange Problem is that when i start opening files from the last dropdownlist to ist.
[Code]...