I'm filling a FlowLayoutPanel with PictureBoxes at runtime, each picturebox has an image from the List(of Image). Depending on the selected folder, loading the images "freezes" the program, so I want to use a BackgroundWorker. I'm having problems with "Cross-thread operation not valid". I want to fill the FlowLayoutPanel with the images from selected folder and a ComboBox with the names of the files.
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I'm trying to find a way to make backgroundworker do what's in the webbrowser. There is a time-consuming part in the webbrowserdocumentcompleted event that I want backgroundworker to tackle. Unfortunately, I don't know how to link that part to backgroundworker so that BW can do that job instead of webbrowser.
Here's what in the webbrowserdocumentcompleted event:
Sub WebBrowser1DocumentCompleted(ByVal sender As Object, ByVal e As WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted
If CheckBox1.Checked = True Then
[CODE]...
The time consuming part starts from line 2 to line 30. My program freezes whenever webbrowser tries to do this job, so I need BW to do this specific job instead.
using a backgroundworker to accomplish database update it takes about 30 minsbut when I minimize the screen or someone remote access my computer it cause freeze screen of my application .Although process workes fine and application is running in background but UI is disable and saying "not responding"
View 2 RepliesPrivate Sub BackgroundWorker1_DoWork(ByVal sender As System.Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles BackgroundWorker1.DoWork
View 3 RepliesOf course, it's nice enough to unfreeze itself when the task is completed. I have must at looked at this code for 2 hours, and still can't find the bug.
Imports System.Threading
Public Class Form1
Dim PathAmount As Integer = 0
[code]......
Has anyone else had issues with Visual Basic 2010?My visual basic program has been running fine for months but recently every time I try and load a project (any project) the program freezes, then I have to close it down and reload, every time I load Visual basic for the second time I get the following error:
HTML
An error was encountered while opening associated documents the last time this solution was loaded. Document load is being skipped during this solution load in order to avoid that error.Plus when trying to run a project in debug it takes ages to load (around 5 minutes) this has only started happening recently, projects were loading in seconds.
I'm storing images in a List Of Image. When I want to clear/remove all the images it contains should I dispose & set each item to nothing before using .Clear? Or can you just call .Clear? I'm doing it like this for now...
' remove all images in list of image named "images".
For i As Integer = 0 to images.Count - 1
images(i).Dispose()
images(i) = Nothing
Next
images.Clear()
I'm in the middle of making a program launcher. I've been able to make a version of it before, but now I want to add more options for viewing the shortcuts. The 2 main views I'm trying to get are: Icon only and Icon with the name.
Here is my original code for only the name:
VB.NET
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Start bottom right of screen
Dim working_area As Rectangle = _
SystemInformation.WorkingArea
[Code] .....
I have switched over to a listview because I assume that's what i will need in order to show images. So I guess my first question will be how do I get only the icon from each file and then show it in the listview.
In a function I have
Do Until PageLoaded() = True
{
Nothing
}
The problem is it freezes up the program and makes it unusable. I fixed it using timers but it makes my program real sloppy and hard to edit.
The program starts. When I click the Start button the original form disappears just as I intended, but then it just hangs there. No picture shows up. The CPU heats up and gets louder. It freezes and I sometimes have to CTRL+ALT+DELETE just to exit the program.[code]
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View 15 RepliesI am making a program that requires the user to enter values and select the correct radio button. It freezes when I click Ok button and I am not sure why, I think I am not using the Do Until...Loop properly.
View 19 RepliesI have a program that has multiple tabs, with roughly 100 - 400 controls of varying types on each area. The program takes about...4 seconds to load, which I don't think is right.I did a few memory tests on the program startup, and idling it. At startup, the program uses 100% CPU usage, and 102mb of RAM, but then the form displays, the RAM drops to 20%, and CPU at 0%.Changing a Tab locks the program up for 1 to 2 seconds depending on the tab, and memory fluctuates.Am I doing something wrong here, when a program form has literally over 500 controls of many types, spanning 6 tab pages, or should I be doing something different?
View 12 Repliesthe hex convert code seems to work etc but it freezes but it does its job eventually I read that backgroundworkers can be used to fix this issue but I have no idea how to use it for my script
[Code]...
Is there a way to code, so that if your program freezes over a period of time (5sec), it just stops trying to do it, and goto something else.
"On ERROR" wont work, since its not a error. "Try" doesnt work ether.
Its because I'm am programming something that can login to a router thought telnet, and sometimes the telnet ActiveX doesn't read the buffer or the line proberly, so when the .GetLine() func is called, it freezes. And i want away to goto another point if it keeps freezing for more than 5secounds. The telnet ActiveX that, I am using is Dimac w3sock.
im working on a little project what executes a bat file on a button click using this command:Interaction.Shell("read.bat", AppWinStyle.NormalFocus, True, -1)however when this is executed the program will become unresponsive while it is running... this may be simple but is there a way i can make my program be responsive and for it to execute in the background?
View 5 RepliesWhen you press the send program freezes and you can't do any thing how i can add button puss resume and stop
[Code]...
I was making a little timer. When the phone is not in standby, my app is working fine. But when i put the phone in standby it stops. When phone is coming out of standby, the timer is going again on the time i put the phone in standby.
I know that other tools keep working, so i there a simple way to do that?
I am loading a series of JPG images into an image list then using that to fill a list view. My program is using ALOT of memory by doing this. What would be the easiest way to add the images but take up less memory/time?
View 3 RepliesI was thinking to make an app to save images [or download images] to local hard disk. But to keep it easy, I want this app to create a small picturebox on form to show the thumbnail of downloaded image. Lets say a 5 pictureboxes has to be added with the thumbnails to show the recent downloads. A user can save the location where he wants to save the files on hard disk. A listbox or a dropdown menu will help in categorizing the images, like image1 in friends section, image2 in family section, image3 in others, etc... When the program restarts all the latest 5 thumbnails has to be loaded in pictureboxes and the directory that was chosen. Finally, a button that shows the downloaded images into original image file size one by one or a slide show. Is it possible to make such program?
View 2 Repliescan we use images in the resource folder as background images by setting the background image during run-time by coding?
View 5 RepliesIm having trouble with streamreader.. It keeps locking up the debugger after the first 3 lines.. The last line being blank.. There is basically a status readout screen that updates every second or so with statistics about the Video Stream in the FMLEcmd.exe program
View 3 RepliesI have a program that will get a hash of the image but the problem is that I have to do to manually.I have a set of images of a folder names images(C:/images/) and ill be choosing which of those images i want to upload to my database.So far I got my program to work with database and such, wat I need is, if its possible I but the folder path on OpenFileDialog and I was a image to show in Picturebox1, then if I press button1 it will go to next picture.
View 1 Replieshow i can making my app in open with list for windows like if i chose my app to open txt file my app will open the txt file like example: ex.txt ==> open with my app and my app with view the ex.txt
View 1 RepliesI want the program to check the number of items in a list box, then send use that number to form a FOR loop and send each to the serial port individually. It actually sends everything, but the program always crashes after the last one saying that the sdprintcount variable is an invalid number for the index. I don't get it as this happens no matter how many items are in the list, and it always crashes on the last one. It sends it, but then it says the index number is invalid.
*********************************
Dim sdmods As Integer
Dim sdmodsp As String
sdmods = sandwichmodlist.Items.Count
[code]....
I am currently trying to develop an application which will backup large folders to a specified destination. To find all the files in the specified 'backup' directory I am using the following code.
[Code]...
I have tried putting my GetFilesRecursive function into a separate background worker to run first so I can update the GUI however I am struggling on how to return the List of found files back to my application (I get cross-threading exception) and how to update the progress bar to show the progress of the GetFileRecursive function so the user knows it is processing the list of files and has not crashed/frozen.
I have a program that starts another program after setting the regkeys basically the program continually syncs the calandar of outlook and another application.I set the regkeys than launch the c:sync.exe app. I have tried a simple process.start and launching the process as a thread and they both do the same thing: The other process starts and works as it should but my main program goes "White screen" or "not responding" until the process.start has exited.
I want the process.start to run in the background so if users click in my main app it responds and truly that they can access the context menu of my main app from the taskbar while the process.start is running.
I'm creating a form which is basically an image in a picture box that I use the graphics object to do drawstring's and drawimage's upon.I keep track of where I'm drawing these things so that I can click on them later and do various things (launch external apps - whatever).Is using a picturebox and the graphics object the best way to approach this.
View 1 Repliesin my button click event i ececure
If BackgroundWorker4.IsBusy Then
BackgroundWorker1.CancelAsync()
End If[code]....
after proceess completed if press the button again.i got the following error msg
This BackgroundWorker is currently busy and cannot run multiple tasks concurrently.
I need to create a program that when I click a button it shows a sentence (took it from a list) random. But after it have to delete the sentence from the list 'cause we dont want to read it again I don't know so much about VB so I'd like some help!
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