I am writing an application that calls data collectors (via ip or modem), collects data from them and reformats it. I had this much written when I was asked to make it multi-threaded so that I can collect from multiple sites at one time. I have that written using backgroundworkers and it appears to be working well. On my UI I have a text box that needs to update with status details like, dialing, collecting, reformatting, etc. I planned to simply write the status updates to the text box from an UpdateStatus routine. Found that had all sorts of nasty threading issues, so I added a delegate to call the status update routine. Problems seem to be fixed except that the updates to the UI are coming in chunks instead of one by one as they really occur. Can anybody tell me how to force the status update in the text box to update more asynchronously?
I have a gridview in which when I click edit, update, and cancel button comes. I have a variable named status. If status=false then update should change to insert and if status=true then update should be update itself.
Got a bit of a weird problem with a progress bar. I'm using a backgroundworker, which calls a "Process" function in a different class. The function goes about its business, and sends an update back to the form displaying the progress bar. What I'm finding is that its doing everything right, except update the progress and a label on the form. I've put breakpoints in to check the values of variables being sent to the form, and they're correct. I've also checked the value/maximum of the progress bar during the same break as I step through, and they're being set correctly.
they're just not displaying their updated status. I've tried refresh and application.doevents, to no avail. When the backgroundworker is complete, the values of the progress bar/label are as if I've never touched them! When the worker is complete, the Close button is enabled, so I know its finished. Anybody got any pointers/thoughts on this because I've been battling with this for a day and a half so far. I'm using the same technique as I've used elsewhere in the app to do similar backgroundworker progress updates, but this one refuses to work properly.
I am trying to write some simple functional code that will be added to an existing large scale project. I used the TweetSharp sdk to get and Access Token & SecretToken, and the stored them, and I can them use those with my API key and secret to post to twitter with no issue. I now need to do the same thing but with a facebook status update. (Someone correct me if I'm wrong), but Facebook doesn't user an Access Token & secret Token, but instead they just use an Access Token. I've written the authorization part of the app that launch the browser, user logs in, click Allow, and then I obtain the Access Token from listening to the URL. I have looked at the documentation for three different SDK/API's and don't see anything specifically related to.. This is how you post a status using the user's Access Token. I have tried a number of API documented methods from the Facebook C# SDK, but they all seem way to complicated compared to how I got this done with Twitter... maybe Facebook just made this more complicated, or maybe the SDK just doesn't offer the functionalityCan someone point me to an example for Facebook API code that functions like this after getting the AccessToken(The following is a twitter example)[code]or maybe the workflow for using Tokens in completely different with FB..
I am trying to learn Background worker and have written up a very simple app to understand this process. My form has a
textbox and a label. When the user clicks on the button, it updates the label with the value that they have entered into the textbox(I know this can be done elsewhere in the code besides the dowork event, I am just testing and learning). Please help..I am not sure what I am missing. The label does not update.
I know the reason of getting this error" Cross-thread operation not valid: Control 'ListBox1' accessed from a thread other than the thread it was created on"
Is there any solution other than raising .ReportProgress event to update the form?
I have a backgroundworker doing everything I want it to but I cannot seem to figure out how to get a listbox in the Windows Form to update from the worker. I have tried an number of things and have looked high and low, but I seem to be missing something. Is there a simple way to do this? here is a bit of my code:
When it comes to Backgroundworker's, I just make a total mess, even after reading over and over again the Backgroundworker component info on the msdn site... I have a code I would like to run on the form but if I do it with a simple "Public Sub" it will make the form lag, freeze, until the operation is done. So I try to paste the same code into a backgroundworker, and use Runworkerasync, but I get errors stating that the backgroundworker can't access controls on the form.
I have seen others with a similar issue but not quite what I was looking for. In the backgrounderworker class dowork event I create an instance of a new class and call one of it's function. Previously, I had this code in a windows.form.timer tick event and would pass a delegate in as one of the parameters which would allow the function and other functions it calls within the class to call a method on the form to update a datagrid on the GUI. Is there a way to do this within the dowork event? I need this because the function I call from dowork calls other functions and I want each of those functions to log information in the GUI datagrid.
tion (even if it falls outside my form).I found some code to get the color.I would like to constantly update the backcolor of a panel to reflect the current color beneath the cursor until it is clicked.Here's an example of what I have tried (bwColor is the name of my backgroundworker):
VB.NET Private Shared GetColor As Color Private Sub bwColor_DoWork(ByVal sender As Object, ByVal e As
I have created what amounts to a progressbar which is launched using a backgroundworker. So all is well the main UI/process is doing its thing and the progressbar is ticking away. What I would like to do is update some text that is in the progressbar. So when the main UI/process finishes one of its tasks I want to update a message in the progressbar. NOT have the progressbar update the main UI/process but rather have the main UI update the progressbar.
i wanted to update my status to indicate e order is delivered or progress in my database and the form itself. so i decided to use progressbar. but im not sure how the coding going to works. or is there other alternatives suggestions on how im going to update my status?
I want to use a database table as a a queue...but the processing of these messages cannot be done from the database.I have a table that stores the requests i get from a .Net component. I now have to read the data from these tables and make http calls to 2 webservices. Based on the response received from the webservices, the data gets archived or deleted.I had a few specific questions:
1. How do i make sure that if i pick a record for processing and the http call fails I should be able to go on to the next record, and then come back to this record at the end of the run
2. Is there an alternative to using the database as a queue(like MSMQ etc.), which option is better
3. I want to maintain an audit trail of the record status. Is creating a trigger to log the changes before the edit the best way to do it?
I have done the PING part, you click a button the it ping's the server IP Address, then return's the result via a label. I want to make one so it check's the HTTP status of the server and if it's on it display's a green circle with a label next to it saying HTTP Status is OK.
Im attempting to make a Facebook app, but i cant seem to find the name to the status update box and the post button, if someone could help me that would be great. this is what i have so far.
i do have the name to the [CODE]WebBrowser1.Document.GetElementById("xhpc_message_text").SetAttribute("value", KryptonRichTextBox1.Text)[CODE] but it some reason wont work. im coding in visual studio.
Code: Public Class Form11 Private Sub KryptonButton1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles KryptonButton1.Click
Company's software: MS Access User Interface and SQL Server backend. Visual Studio VB Express Edition.
I received an assignment to automatically update the job status in a drop down list from "In Progress" to "Finished" after the 3D printer has printed succesfully and "Crashed" if not successfully.
I was thinking to do the following:
New project/Class library/the code: Public Class Class1 Private Sub PRINT_JOB_Click() Dim myjob As Job
1) I am trying to use background worker to download a large file and update a progress bar to reflect the changes as the large 5GB file is being downloaded, and also update percentage completed to the label.text(lblInfo).
2) As I was goggling I came across some info that a web client is needed to calculate the maximum size of the file and divide by 100 and you can stream it down with the web client. Reading it is one thing, implementing it is another as I spent week trying to get it to work.
UCPocoAPoco Imports System Imports System.IO Imports System.Diagnostics
I want to execute a few external apps, where in between a RichTextBox gets updated.. Say when program1 has been startet the RichTextBox is updated.. And when program2 has been startet the RichTextBox is beeing updated again.So what i've done so far is this:
Public Class Form1 Private Sub BackgroundWorker1_DoWork(ByVal sender As System.Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles BackgroundWorker1.DoWork
[code]....
But when doing the above i get the following error:
Quote:
Cross-thread operation not valid: Control 'RichTextBox1' accessed from a thread other than the thread it was created on.
I have a VB.NET 2010 app that uses a backgroundworker to process MS Word docs. All of the code does what it is supposed to do, except when my code calls ReportProgress(). The UI cannot process the ProgressChanged event fast enough before the values in the class that are passed are changed. I know this because I inserted a System.Threading.Thread.Sleep(100) line after each ReportProgress() call which allows time for the UI to make the updates properly. I guess I am looking for a better solution thanThread.Sleep(100) since this adds to the amount of time it takes to process all of the files. Here are some snippets of code that I am using:
I have build a VB.Net windows application which does uploads data into database and basically updates two controls:
1. A textbox which is constantly updated with one line per database record upload.
2. A label which keeps track of the count of database record uploaded.
I have used BackgroundWorker thread concept, where the thread's bgwWorker_DoWork() method contains the business logic for upload and bgwWorker_ ProgressChanged() updates the 2 UI controls based on uploads.But the issue I am facing is that I do not get complete updates on both the UI controls. Sometimes the thread bypasses update of textbox and sometimes of label. I could resolve this issue by adding System.Threading.Thread.Sleep(25) before each UI control update code.[code]
I tried to update the button text on a form from a backgroundworker.do_work event, and it failed, with the usual cross-thread exception message.However, by pure chance, I also tried to update text in a system.windows.form.toolstripstatuslabel also from this backgroundworker.do_work event, and it DOES work. Question: why is this? Is it perhaps because theres some kind of implicit shared behaviour with system.windows.form.toolstripstatuslabel?
Now for a succesful insertion i want to notify the user about a successful save operation.....i.e,i want to display a message "Successful Save Operation"to the user. How to do this using the Status Strip?
I've got the code to display the current browser status text in the status bar but i want it to display the name of my web browser aswell. Example: Dreamincode.net - (Name of Webbrowser)
He is my code for the displaying staus text. Private Sub webBrowser1_StatusTextChanged( _ ByVal sender As Object, ByVal e As EventArgs) _ Handles webBrowser1.StatusTextChanged
i'm in the need to start a backgroundworker inside another one.Now...The first one BGW starts a for cycle, and inside this one there is the second BGW that has to upload an image to a server.The trouble is that, the progress event and the complete event of the internal BGW are never called.
We have two update panels on our webpage. Now first update panel is having button cancel. While second update panel is having a file upload control.Now if the user uploads a file that is going to upload in about 2 mins, and in between, say after 30 seconds the user clicks the cancel button, the upload taking place in update panel 2 should stop.
I am having xp pc. I need to check UPS Status like Online/Offline, running at battery mode or not, having high or low voltage, having input frequency high or low
I am writing a installation program that will copy embedded MSI's to the local disk, install each one then delete the MSI's and I don't know how to get the MSI installation status so that my application knows when the installation is completed for each one.
i'm using mysql database and i have a table (UserLog), 2 fields username password with user level when i sign in the program how my username and user level can be seen in the status strip with date and time?
