I trying to be notified when a directory is created, deleted, renamed or moved. The VB.NET code below only shows the Rename event.
Imports System.IO
Imports System.Threading
Public Class Form1
[Code].....
I have the following code:
Imports System.IO
Public Class Blah
Public Sub New()
InitializeComponent()
[code]....
When I run it and save changes to a file on my C drive, the code works great, except it executes the watcher_Changed() method four times. The changeType is "4" every time.
I've been trying to figure this out, but have had no luck...Using FileSystemWatcher to monitor a folder and subfolders.I've got everything working fine (inluding cut-paste of a folder), the problem i'm having with is if a directory is moved, there is no way for me to get the contents of the moved folder...and the only event that is fired is a "Changed" event...no rename, nothing else.From the MSDN website:Copying and moving foldersThe operating system and FileSystemWatcherobject interpret a cut-and-paste action or a move action as a rename
View 12 RepliesI have little problem. I change the textbox value in pageload time. the textbox change event calling automatically. how to stop that?
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I have a very simple app working well, problem is that it does not close properly. If the user uses the little "X" to close it, it still remains running, just becomes invisible. The X does not fire the closing/closed events..All I can figure out is that to get it to properly close I need to use "Me.Close()" with a button or menu item.I could remove the standard X and force them to use my own close button but that is rather silly..
View 1 RepliesI have this issue where I'm trying to generate HTML to display on the page that is coming from the database in form of a template that has different curly brackets that get replaced with dynamic content at run time. For example curly bracket {Content} gets replaced with a few checkboxlists, radiobuttonlists, textboxes and a submit button. The way I'm doing this is by creating controls dynamically and rendering them as string and then outputting that string to the browser. But what this does is, it doesn't recognise the events assigned to the controls when they are generated. I may be taking a wrong approach to the issue, but I don't really see how else this can be achieved. I have put up some sample code below to show what I'm trying to achieve.
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Not IsPostBack Then
[Code]....
I have some error in my code which causing my WinForm Data application to give Exception. First Record gets saved successfully but while saving 2nd one Exception occars.For this i want to See The List of Events & Subroutins that are called as soon as i hit Save Button in the Order they have Called.
View 5 RepliesI looked everywhere for this but not sure if it can be done. Is there a way to fire events when a user clicks a specific tab. Here is the image to show it better:I am trying to have the program execute a special function when the user clicks on customer info.
View 4 RepliesI've got a research application that is hosting a webbrowser control and I'm implementing a feature that allows the user to select text from a web page and drag it to various research note fields. The issue I have is the dragenter and dragdrop events continue after the initial drop, inserting the text multiple times. Here's the test case on my box and the result.
Select Text in Browser Drag to Text Box Drop Text What happens is after the drop event is fired and the text inserted to the drop target, when you move the mouse after dropping the text, the drag enter event is fired, followed by the dragdrop event, then another dragenter and dragdrop. So, selected text such as "Selected Text" becomes "Selected TextSelected TextSelected Text".
Note: The dragenter event is properly raised once when the mouse enters the textbox, however the mouse does not have to leave the textbox after the dragdrop event fires. i thought there was something wrong with my application so I created a simple test app, containing a Webbrowser and a multi-line text box. This test app generates the same results and the code is below. This is the first time, I've implemented
drag and drop operations and I followed the guidelines noted in this MSDN article. While I did what the article suggests, I'm thinking I need to note the event was handled somewhere.
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I'm working on a custom scroll bar. When dragging the slider, things work smoothing with what I have... that is if the users movements are smooth and slow-ish. When moving quickly the mouse move event doesn't seem to fire as accurately as I had hoped.. I attempted using the up and down buttons enter event for re positioning or "resetting" the slider whenragging is activated but still those events don't even fire when the mouse move event is firing. So I believe I hit a barrier of my .Net knowledge and hope someone here knows a way around this little issue.
Public Class Form1
Dim Dragging As Boolean
Dim mPointY As Integer
[code]....
I have a program that reads data from a scanner via the serial port.This program works fine on Windows XP.We have a terminal server set up running Windows Server 2008.I run HyperTerminal on our test terminal, it connects and reads the scanner data fine through COM1.I run my app on that same test terminal and get nothing when I scan.My app connects to COM1 without errors and disconnects without errors.BUT, the DataRecieved event is NEVER getting fired.Neither is the ErrorReceived event.I have played with the Handshaking, with the RecievedBytesThreshhold and pretty much every setup setting I found.Set it up exactly like the settings on Hyperterminal.I have even tried starting a timer on a different thread to call ReadByte every second to try to KICK this thing into doing SOMETHING.Nothing has worked.
I have been trying to fix this for an entire day now.Added events to my class trying to see EVERYTHING that is going on. All I know is, it connects to the port and it disconnects from the port correctly but nothing happens in between.No data when I scan.No event fired at all between connecting to and disconnecting from the port.I have also downloaded other's simple serial communications applications.Nothing in .NET works.[code]
I have three events to fire on button click. after running the first event i want to wait for 30sec to wait for nex event to fire. how i can wait( i mean looping for 30 secs).
View 4 RepliesI am using about 5 different filesystemwatcher routines total. I am using the following
filewatch.NotifyFilter = NotifyFilters.CreationTime Or NotifyFilters.LastWrite
AddHandler filewatch.Created, AddressOf addfile
AddHandler filewatch.Changed, AddressOf addfile
filewatch.EnableRaisingEvents = True
However, there is one problem with it... whenever I open a file and change stuff, then close it without saving the changes, the events still fire. I am opening excel workbooks in code, then use xlsWB.Close(SaveChanges:=False) to close them, and the event still fires, where the file isn't really changed so it should not fire.
I have an object that is defined as a global variable based on custom class. Within that class I have an event that gets fired a certain intervals. These events are fired on the same thread as where the object is declared. How do I create a global object, but have the events within that object fire on a separate thread?
View 2 RepliesIm Using VB 2008. I have MsgBox() statements in all Mouse & Form Click events to TEST & NOTHING FIRES during Form Load when I click on Form or Button Controls !!! The Form Load event contains code for Displaying the Label.Text control many times with changes in the Text to simmulate annimation.
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I need the directory entry control properties and events.
View 1 RepliesI have my application watching my desktop, pictures, music, and document folders.[code]What would I need to put into logrename() in order for it to automatically upload the renamed file onto my server?
View 5 RepliesI have been trying to implement the jQuery weekcalendar using .net. What I can't seem to figure out is why weekcalendar states events.events is undefined after I make an ajax call to a webmethod I created which returns JSON. Below is the relevant code:
[Code]...
I want to make Keybord events and mouse events for learning and educational Purpose.
1. In Form any object like A "picture box" move by Arrow keys .
2. Picture Box Contain many Picture i want change Picture With next and Previos By Arrow keys.
3. I contain Voice of alphabet in Mp3.When i Press any button in textbox then its work.
4. Mouse Pointer Change My Own.
5. I click any Object or any thing By mouse its noice clicking sound like Tik Tik Tik.... Question No 3 is very hard to do . but not im possible
I added FileSystemWatcher in Form1_Load like this -
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
....................
[code]....
I can't seem to get a FileSystemWatcher to work, this is what I currently do.
Private Sub FileSystemWatcher1_Changed(sender As System.Object, e As System.IO.FileSystemEventArgs) Handles FileSystemWatcher1.Changed
MsgBox("Directory has changed")
End Sub
I have the filesystemwatcher path in my desktop. But when I create, re-name or delete something in the desktop it dosn't do anything, not even giving an error. I filter FileName, DirectoryName and LastWrite (the defaults).
The FileSystemWatcher have the EnableRaisingEvents set to true. So don't really know what the problem is.
I've tried google without any luck, all I found was people having problem that the FileSystemWatcher executed twice.
So do I have to do anything more on the code to get it to work?
I have a FileSystemWatcher in my project and when Created new file, i can get MD5 value of the new file, but sometimes error occurred while getting MD5 value, my code is like this
Private Sub FileSystemWatcher_Changed(ByVal sender As System.Object, ByVal e As System.IO.FileSystemEventArgs) Handles SystemScanner.Changed
Try
[code]....
That error is "Access Denied", i think function must be wait for done the progress, how can resolve this problem ?
I have a FileSystemWatcher monitoring a folder, and when many files are cut and pasted into the folder, the GUI freezes, as the 'Changed' event is fired over and over. Any way to deal with this?
View 1 RepliesI've been trying to get filesystemwatcher to work in my application with no luck. I've been able to modify the example on MSDN and have it work very well, but not when I try to use it in my own program. [Code]
If you compare it to the example, there really is very little difference, at least to me. "loadlist" is the equivalent of "main" in the example, "watchfile" is the equivalent of "run", and "OnChanged" is the same as in the example, but performing different actions. Right now its not doing anything. If I remove "Shared" from the subs then it works if the file changes once, but after that it does nothing. (I must admit I don't really know what making a sub "Shared" does).
I have a FileSystemWatcher tool on my form Watching 'C:' and i am now the FileCreated Code
Private Sub FileSystemWatcher1_Created(ByVal sender As System.Object, ByVal e As System.IO.FileSystemEventArgs) Handles FileSystemWatcher1.Created
Dim Name As String
[code].....
I've written a nice service that monitors our FTP folder, then sends out email notifications to the respective Sales / Customer Service reps associated with the client whose folder has been modified.Working great! ...until a CSR asked if there was any way to make is so that email notifications only get sent out if if's the customer making changes to the folder, not someone internal adding / deleting files to the FTP folder...
So, my question is this - is there any way, and if there are multiple ways, what's the best way to tell WHO is making changes to an FTP folder? is there a way to capture an IP address?Being relatively new to .NET (all of about 8 months sporadically...) I'm hoping that a veteran that knows more about .NET than I will get me going in the right direction!
I am in the process of writing a windows service that will be replacing a vbscript that runs via a scheduled task currently. It currently runs on 350 kiosk machines in 350 different locations.Here is what the vbscript currently does:
1. The machine receives a ZIP file in the RECEIVE directory. Configuration_09122010_1234.zip. This file contains software configuration files that need to be copied to specified folders on the machine and to another machine on the local LAN where this kiosk is located.
2. The zip file is extracted to a folder with the same name as the zip file.Inside the zip file is an instruction file (.txt) and files that are referenced in the instruction file.
3. Opens the instruction file and performs the instructions in the file. Example: (this would copy pricingfile1.dbf to \mymachinecapplication1pricing, and then execute softwaresoftwarepatch1.exe which is located in \mymachinecpatches)
pricingfile1.dbf, \mymachinecapplication1pricing, copy
softwarepatch1.exe, \mymachinecpatches, run
4. Once all of the actions in the instructions file are completed, the folder where the zip file was extracted is deleted and the zip file is renamed to configuration_09122010_1234.zip.applied to show that it was processed by the script. Also, because the script is a scheduled task, this ensures that the file is not applied more than 1 time.
So I have started writing the service using the FileSystemWatcher. Basically I look in the receive folder for any file that looks like Configuration_MMddyyyy_*.zip and unzip it to a folder of the same name.
1. I have been doing some reading about the FileSystemWatcher Created event.I read an article about how the Created event fires as soon as the first byte is written but doesn't necessarily mean that the complete file has arrived at the machine. A post I read involved a .csv file and it mentioned that you try to open the file and catch any errors - if you cannot open the file, it hasn't arrived yet. This makes sense to me but I don't know what the equivalent would be to a zip file. It's not the same as opening a txt or csv file.
2. There are times that we send more than 1 configuration file in the same day, or even, at the same time. Above I mentioned the name was Configuration_<date>_1234.zip. The 1234 is a sequence number, always incremented. The idea is for 1234 to be applied before 1235 and 1236. So if I had 2 files sent *at the same time* and I want them to apply in order, how would I do this? I thought about when I am applying 1 file to stop looking for changes until after the apply process is completed, but then I *think* I would miss any file that arrived while I EnableRaisingEvents = false?
I am developing an FTP program which: Watches a folder. If a new file is dropped there then upload it. Tells user if uploading and when complete. All the above works, however I wan to add the items to a listbox that are being uploaded. So if I dropped 3 items there it would look like :
Upload Listbox:
cake.jpg
myExcelFile.xls
woot.docxAnd as each one is done, or new files are added it removes them or adds them.
I tried using que, but with no luck as the program just hangs whilst it uploads. So I had a search and looked into multithreading and I tried to implement it, but I can't get it to work as it gives me some 'delegate signature' related error message as you can't pass in values when trying to use 'AddressOf'.
Here is my code for the The .created sub:
Public Sub FSystemWatcher_Created(ByVal sender As System.Object, ByVal e As System.IO.FileSystemEventArgs) Handles FSystemWatcher.Created
'if any file created add fullpath to the listbox
ChangeLog.Items.Add("Created: " & e.Name)
QueueListBox.Items.Add(e.Name)
[Code] .....
I'm having a problem trying to work out how to watch a folder for changes. This is how far I've got:
Class MainWindow
<PermissionSet(SecurityAction.Demand, Name:="FullTrust")> _
Private Sub Window_Loaded(ByVal sender As System.Object, ByVal e As
[Code]....
The problem is when a change occurs in the folder the program exits with no error code. I've read a few related posts and I know it has something to do with thread safety. However I've no idea how to make this program "thread safe".
I'm planning out a filesystem tools application. I'd like to use a collection of FileSystemWatcher to keep an eye on every drive while the application is active, so that if the filesystem topography changes the change event can update the UI (it's
either that or spawn extra threads to constantly loop through checking if drives have been added/removed and then drilling through every drive path to see if folders/files changed - I really don't want to use extra threads).
I don't use FileSystemWatcher much and I'm wondering how much of a resource hog this is likely to turn into. For example, I have 1 500GB and 2 1TB hard drives and I have 2 CD/DVD drives in my system - I also use external IDE and SATA bays to attach
extra drives ranging from 20GB to 2TB at a time, and I'd be using a Collections.Generic.List of FileSystemWatcher to spawn a new watcher for each drive, adding and removing FileSystemWatcher instances as drives are added and removed.
At that point I'm not entirely sure whether a FileSystemWatcher pointed at the root of a physical drive will actually monitor the entire sub-filesystem for changes, and even if it's capable of that exactly how much system overhead am I going to be sucking in?