Anyway To Stop Flow Of Events In .NET?
May 23, 2012
that is a question I have been asking myself for a while.Giving a certain flow of events, can I when handling one of them, stop the next ones to be raised? For example, when collapsing a node which child was selected in a treeview (winform), the events are raised like that:[code]I could stop them by using a class member, but I was wondering whether there was a built-in function or just another way (a more elegant way) to achieve this, by acting directly on the events queue.
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Jul 21, 2009
where to find sample system with complete flow, database structure and data flow.. just for reference purpose.. system like inventory, payroll, accounting, billing and etc..
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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?
[Code]....
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Sep 3, 2011
How do I autoscroll my richtextbox?
Form1_Load events;
How do I make it do this event occasionally? Like maybe every 5 launches, it does the event?
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Jan 17, 2010
I'm attempting to intercept and interrupt mouse events. Lets say I wanted to disable the right mouse button down event, or even the mouse move event. I haven't been able to figure out the interrupting part.
I am using the (I assume pretty widely used) following code for Global Hooking of the mouse.
[Code]...
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Mar 21, 2010
I have been trying to learn how to program a flow chart and am stumped. I want to know how to get the example code from the book that I got at the library to calculate the outcome. I have been at this for days in my spare time and can't figure it out. I tried to apply the examples to my code and got part of it figured out now I am confused on breaking the code down so that I can assign a room if the age is less than 21. Do I just code it the same but change the greater than less than cymbal? I have attached another photo of the code that I have put in Vb for my forum and came up with it between the example in my book and the examples posted on my post. I am getting errors and don't know why.
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Mar 10, 2012
i can't seem to get it the timers flow could anyone teach me how to use it for example the form would show up if the date and time in my computer matches with the time on my database im using vb.net2008 and mysql express for my db can't get it
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Sep 10, 2011
I am wondering(struggling) the following:
I have 5 flowLayoutPanels and 5 PictureBoxes i want to be able to move anyone of the picture boxes over anyone the FLP at run time and have the layout panel add it to FLP.controls.Add()....
I've been at it for Hours and now ill swallow my pride -
I have done the following To get it working, but here i have to manually specify which PixBox intersects with which FLP and i dont want 25 if statements
[code...]
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Dec 15, 2010
I am looking for a way to auto generate a flow chart for my VB Code, are there any tools to get this done?
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May 12, 2010
I am wondering how to have more than one SQL select statement inside my window formapplication that will control the data flow, as i am a newbie in visual basic.net 2005. This is because I am working on a Alarm Application Notifier which will alert the guard on duty as well as inform him the alarm location. The guard's computer screen will be showing the premises and the button will blink at that location where the alarm is. So if the alarm is at block A for example, the guard screen will show block A button blinking.I have already done the first part but i am STUCK at the rest as to how am i going to seperate the conditions for the 3rd to 4th building .The bottom is for the first building code. The data is from the sql database.
Imports System.Data.SqlClient
Imports System.data
Imports System.Drawing.Image
[code].....
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Aug 10, 2009
I am wondering how to have more than one SQL select statement inside my window form application that will control the data flow, as i am a newbie in visual basic.net 2005. This is because I am working on a Alarm Application Notifier which will alert the guard on duty as well as inform him the alarm location. The guard's computer screen will be showing the premises and the button will blink at that location where the alarm is.So if the alarm is at block A for example, the guard screen will show block A button blinking.
I have already done the first part but i am STUCK at the rest as to how am i going to seperate the conditions for the 3rd to 4th building The bottom is for the first building code. The data is from the sql database.
[Code]...
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Feb 26, 2009
Alright, so I'm still working on the slot machine. I have three timers all independently going for my three "wheels" of the slot machine.
My issue, is that I'm trying to make a Stop button to stop each timer one at a time, and I'm not understanding why this code isn't working. The logic completely makes sense, and the first "wheel" stops when I click the button, however, it doesnt appear to stop the other two timers.
CODE:
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Dec 26, 2009
I have a program with three tabs. On tab one I use a folder browser dialogue and load file names into a listbox. These are usually ".tif" image files but could be other image formats. I save the folder location in a variable. On tab 2 I have a Flow Layout Panel. I need to 1) use that folder location on tab 1 as the source of files to be loaded into the flow layout panel and have it do so when I use the Folder Browser Dialogue; 2) I need to click on these tab2 images (in the Flow Layout Panel) to select them, and to trigger events. Mainly create a list of selected image thumbnails.
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Apr 19, 2012
I am very New to Vb.net. We are using fortify software for projects when it is going to LIVE. In that process I got some cross-Site Scripting : persistent Data flow issues.
[Code]...
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Mar 17, 2009
Is there any tool available which can generate data-flow diagrams and entity relationship diagrams directly from VB.NET source code?
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Jun 17, 2010
I have been trying to understand how to make thumbnails that I create from a directory, and place in a flow layout panel, selectable. That is, when someone klicks one of the thumbnails that thumbnail should be selected and, either automatically or by the click of a button, a new window (picture viewer) opens and shows the original picture. This is probably very easy to implement, but I am at a loss for the moment.I've tried to find an answer to this by searching the forums, but nothing good has been found so far.
[Code]...
The above code works perfectly and creates thumbnails from the directory c: emp and whatever subdirectory the user writes in the textbox (textbox2). No problem here, it is how to proceed to the next level that has got me stumped. As stated I want the user to be able to select one of the thumnails to get a better look at it in another window. So in selecting it, the procedure should get the path to the original image, and the rest is magic.
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Oct 1, 2010
im trying to get my from to have a flow panel that shows all open forms and it has to refresh its self when a form open or closes. Ive already kind of done this but im sure theirs a much better way to do it.
The Code im using at the moment is:
Private Sub formcheck_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles formcheck.Tick
Dim formTitles As New Collection
[Code]....
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Apr 21, 2009
I have a main form having a comobox with categories populated in it. for adding new categories I have a button1 on this main form. On button1 click I am creating and showing a new form2 for adding new category. I want this new added category in my main form combobox on closing this new form. I have checked mainform_activated even but it is not fired on close of form2.
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Apr 16, 2012
how to make a flow chart designer? where i can drag n drop modules and create link between them...
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Apr 21, 2009
How to write Technical Documentation for a project flow
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Dec 16, 2009
I would provide my code but I made it so complicated I don't really want to show it. I want to start over.I would like to create the most simple way to begin parsing the text file below beginning with the line - 1, EVENT parsing this comma delimited portion.I would like to
1. NOT include the comments and
2. NOT parse the Array1 and Array33 portion of the file
3. Put it into a collection based on the AlarmLog class provided below.
#TestFile.txt
#comments
#comments
[code]....
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Jun 30, 2011
during the development of my project, i'm incurred in the need to use the flow layout panel, but the real need is to show these panels with a defined size without using scrollbars.
I think a kind of dynamic clip of these panels.
For example.
I've a flowlayoutpanel of this visible size (100,200) but its real height is 500, now i've to show to the users the other content of the panel, without using scrollbars.
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Feb 24, 2009
I am looking for the windows mobile equivelent of a flow layout panel (or any other control that I can use to hold custom controls)
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Aug 8, 2009
So I'm trying out a concept tool of mine where I need to be able to read and write data from a database real easy. I've set up the form as I like and spread around different text boxes and dropdownboxes to read the data from the database. And I've got it all to work and all, but there's a small bug I don't fully understand why's there. Some textboxes don't update the text from the database.
But it seems as it only occurs if the data in the database is nothing. So the value from the last row is still hanging in the textbox and thus, clicking "Update" actually updates the value from the field from the last row, into the new row. Messing everything up.
[Code]...
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Nov 11, 2009
Private Sub btnExit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnExit.Click
Me.Close()
End Sub
[CODE]...
My code will only let me typ one number into the text box and then it brings me back to the code and says "stack over flow exception was unhandled.
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Feb 6, 2010
I have a TextBox called Social. As you type in a Social Security Number into the textbox, it formats itself into the standard Social Security Number Format (XXX-XX-XXXX). It automatically adds in the dashes after the third and fifth number, or corrects/removes the dashes if numbers are added or removed from in front of the dashes. Also I coded the script to record the caret's location so that the caret goes back to where the caret was before the adjustment in dashes.
I used Pos and PosHold to hold the caret's location.
The problems I am having are:If I remove a number before one of the dashes, the caret is reset to '0' from using break points, it seem to jump out of the if statement before setting the location of the caret. Sometimes when a number is removed from before the dashes, the dashes are removed like scripted but, the dash is not put back in the correct location. This seems to happen primarily if you have numbers passed the second dash.
Social_TextChanged
Private Sub Social_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles Social.TextChanged
[Code].....
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Jun 23, 2011
I am trying to play some WAVs within Media player and am confused at the order my code performs tasks in.
I need to use Windows Media player as my WAVs are 8 channel and just playing the WAV without using media player doesn't seem to support this.
I have a form with a button and a media player component on it
Her's my code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
AxWindowsMediaPlayer1.URL = ("C:ASOwl1.Wav")
[Code]....
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May 31, 2011
I was going through the example code on FTDI's website. After opening the device and setting the flow control to be RTS/CTS they send and receive data in the following manner:
[Code]....
Basically they set the RTS, DTR, then write data to the device. Is this correct? If I was sending multiple times to the device, do I need to clear the RTS each time? and then set it high again? or do I just set it high each time I send new data? Why are they setting DTR if the flow control is defined as RTS/CTS? As far as best practices go, is this the best way to read and write?
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Feb 2, 2009
I have finally figured out how to download a file with background worker and downloader. Now the form does not freeze.. I have only one problem left now... How do I get the progress bar to increment in tandem with the data flow? I have listed my full code below. Towards the bottom where the DoWork() sub resides, I am just a few lines short of this year long goal.
Imports System.IO
Imports System.Net
Imports System.Text
Public Class Form1
[CODE]...
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Dec 24, 2009
I have a simple application that use thread pool to read a file and input the data into a listbox. I want to be able to stop threadpool from running after clicking a stop button. How do I stop threadpool? Here is the code for my application below:
Imports System.Threading
Public Class Form1
Private Delegate Sub StringDelegate(ByVal text As String)
[Code]....
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