Open A File And Change Stuff, Then Close It Without Saving The Changes, The Events Still Fire?
Mar 17, 2010
I 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.
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Nov 18, 2011
Okay what I have saves my stuff to the database. However, when I rebuild my application the previous data is gone. The data is loaded into datagridview using
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Jun 20, 2010
So ive Almost got Most of the Beggining Stuff done. but there's one thing. How do i get it to Save Its Data for the CheckedListBox?
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Apr 11, 2011
I 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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Mar 9, 2010
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].....
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Mar 6, 2009
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..
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Jul 28, 2011
I 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]....
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Apr 23, 2011
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.
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Aug 3, 2010
I 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.
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Jul 8, 2010
I'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.
[Code]...
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Jul 8, 2011
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]....
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Oct 9, 2010
Any code I could get that would Open + Close a .bat or .cmd file? Not ALL .bat / .cmd files that are open, but just ONE (runserver.bat / runserver.cmd).
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Jul 9, 2010
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]
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May 20, 2011
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).
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Mar 20, 2012
In this project I want to read text from the text file.. after that want to update the text file.. if i just run the code manually, the code run well.. but if I want use timer to keep the code run automatically there show problem.
here my code
Imports System.IO
Public Class Form1
Dim skrng As Date = Date.Now()
[code]....
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Jun 9, 2011
I am having issues with people not closing an important file in excel.I have a new vb.net based application that i want to close the excel file when i prompt it to. The application checks for specific named files in a hidden folder on a timer event, (that all works fine) how do i tell it to close a file that is already open.All threads i have read say things like this:
Dim XLApp As New Application
Dim WkBook As Workbook = XLApp.Workbooks.Open("C:Book1.xls")
Dim Sheet As Worksheet = CType(WkBook.Sheets(1), Worksheet)
[code]....
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Jul 15, 2011
I am trying to save the text file in this path:"C:Test est.txt" and when the file is already opened I need to check whether the file is opened and I need to close it before writing it to the file.[code]...
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Sep 25, 2009
I'm rather new to vb and was wondering if someone could help me out with saving and opening files from a lan.trying to write a macro that will open and save a file from a lan drive that may have different drive letters depending on what each person wanted? I've been susessful in getting a file to open with my current mapped drive but i won't work if other people use it.
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Mar 3, 2009
How do I open a bmp file in VB.NET add a line then close the file?
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Nov 18, 2011
I am using Visual Basic 2010 Express and attempting to get information on how to Open, Close, Read and Write a disk file in Windows using VB. I have attempted to use help on the home page of Visual Basic 2010 Express with no results. It does not give me any instruction or sample.
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May 23, 2009
I would like to ask. I have saving to a text file down now with multiple lines and it works.
How do i open this text file into a label.I know about open file dialog which is the same as savefiledialog.
So how do i open the text file and display the text in a label with multiple lines using the one click of a button and a open file window thingy.Does anyone have code that could me with this.
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Mar 4, 2011
In a program I'm working on, I want a "Loading..." dialog to close when it can't log in to a site using the username and password provided by the user. Basically, I have the code set up right because the function it is supposed to carry out when that occurs does work, but for some reason it ends up in some really weird stuff happening. In the Loading form, I have it set to do "Form1.Show()" and then "Me.Close()", assuming it would simply show the login form and then close the Loading form. However, when this happens, the Loading form closes, and then for only an instant Form1 shows, and then the Loading form shows and Form1 closes. This happens forever until I stop the debugging, and I can't seem to figure out why. Am I using the wrong method? What exactly does Me.Close() do anyways? All I want to do is close the form and open another
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Aug 11, 2009
i would like to do FILE I/O without a dialogue. the file always be the same and the location will always be the same, therefore i dont need a dialogue. i would like to know how can i do this? what is the code to open, write, and save to a file without the dialogue.
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Dec 17, 2009
I am a newbie trying to make a application but i am having difficulties. No matter what i do i cannot get the open file dialog and the one fo saving to work. I just want them to open and save ones a web browser usually can do. I have tried so much but can't figure out what to change when i look at other people's stuff on this and other sites.
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Jan 16, 2009
I'm currently in the process of building a text editor type program, and have run into a brick wall. I haven't done VB in years, so I may just need a little reminder on some things. I have coded everything so far as far as opening files, saving them, changing fonts, colors, etc. However, I'm looking to add a Close button to my menu strip that will just close the currently opened file, and not the entire program, while also ask the user if he/she would like to save before closing the file, and then if they select yes, it will show the save dialog, and if not, it will go ahead and close the currently opened item.
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Oct 26, 2009
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?
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Oct 21, 2009
In my program, I have a timer with a inteval set to 1000ms. The timer is executing a MySQL-command, and right now I'm opening and closing the connection each time.
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Apr 27, 2011
I am having a Web Page that looks like:
<%@ Page Language="vb" AutoEventWireup="false" MasterPageFile = "~/Master11.master" CodeBehind="test7.aspx.vb" Inherits="MyApp.test7" %>
<%@ MasterType TypeName = "ASP.sample_template_master" %>
<asp:Content ID="Content2" ContentPlaceHolderID="mainContent1" runat="server">
</asp:Content>
When the user closes the browser, I want to display a confirm box if the user wants to save before exit.
If he says yes, then I wish to save the information in database and close the browser else I just close the browser.
I read msdn forums but all I found was window closing event which I was not able to apply here.
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May 10, 2012
I have a form with over 100 textboxes that are set in multiple groupboxes and that number grows as I continue working. I am trying to get an event to fire if there is a keydown on any one of the textboxes. other than individually adding all 100 textboxes to the handler, is there a way for me to create a single event that handles all textbox.keydown events on the form?
I want to run something like the code below every time a textbox on my form changes. The code rules out text boxes within groupboxes that I don't want to fire.
If TypeName(SplitContainer1.ActiveControl) = "TextBox" and InStr(ctrl.Parent.Name, "GroupP1Payoffs") = 0 _
and InStr(ctrl.Parent.Name, "GroupP2Payoffs") = 0 and InStr(ctrl.Parent.Name, "GroupP1LoanDetails") = 0 Then
[Code].....
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Jan 31, 2011
I am looking to prompt the user to save data when they close a form window in a winforms application. I can't figure out how to trigger the prompt to the user, should they click the red box at the top right corner of the form.
My application currently has a boolean flag, that is set to True on textchanged event. So I will only need to check for the boolean value in whatever event is trigger by the red box.
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