I am new to LINQ to SQL and I try to Edit and Add a New item on a Windows Form in VB.Net, the form freezes? By example, when I try to select a value from a combobox the prompt get stuck (it enters in Enter event) and it cannot exit, then the form froze.
View 3 RepliesI am struggling with something that might be very basic... I don't know how to find an IP in the background using BackgroundWorker and then updating a label on an active form with the IP.
So it is like this:User opens the form The label is now saying: "Finding IP." It keeps saying that untill the BackgroundWorker found the IP and then it updates the label with the IP.
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My mate & Myself are currently building a IRC Client, a problem we have come across is when opening a chatroom the form Freezes for example.We are currently using arrays so we can open multiple chat rooms and at this current time to open a chat room we use.[code]Using the above code, the form does not freeze but appears we can not access any of the controls such as (RTB)What would be causing the form to freeze on .show(),
View 4 Repliesam developing a basic "stock tracking system" in VB.Net with an Access Database for my final year project, and I am in need of help with some issues that I am still facing.System:The user basically selects a customer, selects the product, batch number, quantity, and date that the customer has chosen, and gives a summary of the transaction.I am then generating a summary report via the report wizard tool to show stock levels, and info on which customers bought what product.My Database contains 3 tables: Customer, Product, TransactionI can currently write to both the customer and product tables, bit i havnt figured out how to save a transaction record yet?, also, I am saving to the product table from a "Deliveries Form" that I have for entering incoming products. But I have not yet figureed out how to subtract the quantity values in the product table from the "Purchasing Form"? This is a major issue)en the user selects a customer from the dropdown box, that customers details is displayed in a label on the next form for the users benefit. This works when I hard-code the customer ID to be 2 for example, but it doesnt seem to recognise the "gCustomerID" (I have gCustomerID declared Global Variables module file)I think that this is the problem?
View 2 RepliesI am making a small game of pong and i want to incorporate a pause feature. is there a way i could freeze the form in place and then unfreeze it later at the push of a button. the tutorial i used is below so check it out to get an idea of what i've made so far.
View 2 RepliesI've been trying to use "System.Threading.Thread.Sleep(15)" as the delay code but if freeze the form. I used this "Location.Refresh()" where location is the name of the form, but it didn't give me what I need. This code is going to work on a ProgressBar while typing and the value of the progress bar change while typing. The progress bar jumps to the new value and I want it to move. So I thought about puting it in a "For ... Loop" but the whole form freezes.
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I'm using loop to read data from sql and then make some calculations then save it again to another table but when application loop for 3 or 4 times it's freeze but the job is done but if loop = 10 or more then it is freeze and hangup for long time .i need to learn how to make my application working better and never freeze and make application working with any count for loop without freeze .
View 7 RepliesI had created a windows forms application in vb.net. It contained several windows. Now the users of that application are telling me to display all in one main form. They want to see all the details in one form. I had implemented MDI but they want something like tabs. On different tabs different forms should be displayed. How shall I implement this.
View 4 RepliesI have a dgv, I populate it, and I insert a row at the pos 0. And I want to freeze this row even when the user sorts the dgv.
How can I make this? The frozen property alone seems to be not enough.
Currently I have to retrieve over 2000 records from DB and bind with combobox. and then follow with another 3 retrieving (less than 20 records)
My problem is when I call this function, my GUI became freeze.
I try to use Application.DoEvents() method but it still didn't work.I read some post and pages, they mention about BackGroundWorker and .Net 2.0. But what i use it MS 2003 with 1.1 so i think i can't access BackGroundWorker.
How can I change the background of my form to look like that of Windows Mobility Center in Windows Vista?
View 2 RepliesIt is possible to create windows service using windows form control in vb.net. give me the url or links. The windows forms control such as, Timer control, list-box, notify-icon control etc.
View 1 RepliesI have seen this happen before but am not sure how I resolved it in the past. On runtime the controls of my form change from the windows 7/vista format to an older version format as shown in the attached image.
How to display the controls in the format on the left (new windows format)
i am doing project of Order Accepting system for five star hotels.Scenario is Waiter will accept order using Window Mobile which is Connected to WiFi present in hotel.I want to communicate to database(Sql Server) present on My Machine (Computer present in kitchen) through WiFi and Add order into table present inside database. This should notify my application present on Compter and should print order. After completion of Order Application from kitchen will notify to waiter about completion. My problem is How to Communicate with database present on Remote computer using WiFi from windows Mobile.
View 2 RepliesIt is possible to create windows service using windows form control in vb.net.If yes then please give me the url or links.
View 1 RepliesI am attempting to freeze the top pane of an excel spreadsheet, which I have opened via my application. The most used method from various internet sources is: [code]
View 2 Repliesok i have this code for a banner changer i wrote for an app but i have an issue the code works it gets the banner url from the mysql database useing this code[CODE]......
so im at at loss how do i get it to work so the GUI is still useable while it gets the banner ?
Using DataGridView with VB.Net 2008.I would like to freeze the left column so that when/if scrolled this column still remains in place.
View 1 RepliesSo i am having a bit of a problem.. What i want is for my application to show the panel in the from to display a windows explorer selection.. Look here
You see the panel 2 in here... Well the panel 2 needs to display this...
Is this possible you know like with a library or an extension or something.. Or do i need to make my own System for viewing files..???
It is possible to create windows service using windows form control in vb.net. The windows forms control such as, Timer control, list-box, notify-icon control etc.
View 2 RepliesI'm trying to move a windows form app to a windows mobile 5 device and I was able to get every thing working except this piece of code.
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I use these codes to download/upload to my FTP host , they work perfectly but since i have to handles few download/upload , sometimes the application freeze during download
'Upload :
Try
' set up request...
Dim clsRequest As System.Net.FtpWebRequest = _
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Is it possible to freeze a remote computer? thru the ip address.
freeze computer meaning temporarily disable the mouse and keyboard of that remote computer
My following code hangs my VB IDE. What could be the reason. I am of the opinion that by 'sleep' I am avoiding a tight loop and so the program should not freeze. What should I do?
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I'm experiencing an error which complexity and way to approach I can't quite understand.. It looks like two threads not able to work simultaneously.The first thread is the normal program thread, and the problem occurs when the user clicks a button. This sends some messages through a method (PlaceOrder) of an API library object. This method is called 2-3 times in a loop. Handlers have also been added (on program startup) to receive callbacks on events raised by that object, and this is the 2nd thread that contributes to the error.
The error seems to occur when the PlaceOrder method is called while receiving an event from this same object.The result is that the UI freezes. I can trace the error in two places. If I trace the first thread (which is the initial program thread); the freeze occurs when reaching the lock(this) line, in the API-object class. If I trace the callback event, the handlers of this event try to invoke a RichTextBox on the form, and the freeze occurs on the line <RichTextBox>.Invoke(....), as indicated below.
The thing is that when pushing the button, there is a loop which calls the method of the API-object 2-3 times. And the first time succeeds, but the 2nd time it seems to crash in some way with the callback. It would be nice if I had made some silly mistake with the invoke code, but I don't think I have, as it updates fine prior to the error.. I'm not sure, but it may be relevant that it's in fact the same object, so early in my program I add this event listener (which is the one that updates the RichTextBox):
AddHandler ibclient.Error, New EventHandler(Of ErrorEventArgs)(AddressOf client_Error)
..while later, related to the freeze, I have:
ibClient.PlaceOrder(....)
But I'm handling a lot of calls forth and back other than these, and haven't experienced any problem before.it doesn't give any exception or error message, it just freezes.The invoke stuff in the form code, which should be as per trusted examples: (Freeze occurs at blue highlight)
Private Delegate Sub SetRichTextBoxInvoker(ByVal message As String)
Private Sub OnLogUpdate(ByVal message As String)
If Me.rtbTwsMessages.InvokeRequired Then[code]........
First off I'm using aspx pages with Visual Basic .net 2008 for the code behind.
I'm using a FileUpload control on an aspx web page to upload files to the server.
When I click on the Browse button I get a dialog box to select the file. I select the file and click the Open button and the entire file path populates the textbox portion of the control, just as it should.
However, when I use the same process to select a second file, after clicking the Open button it takes over 2 minutes for it to populate the textbox portion.
I have a RichTextBox (txtCustomDict) ... and i am invoking it like so from another thread:
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EDIT: Just checked and it does the same thing if i split it into 2 differently named subs then invoke the other sub
I have an app with which I populate a DataGridView named data. I have implemented threading in this app. Now both in debug mode (run through VS 2008 Express Edition), and without threading implemented the app works smoothly as it should. With threading and as a standalone .exe however, it freezes up. Not just anywhere, but as soon as 6 items are filled in the DataGridView (the top of the last one is only slightly visible). I have synclocked everything relating to the DGV, and am completely stumped.
View 7 RepliesI just put a button and a textbox on a form to try and learn to multi thread, i think i've done it correctly. but it still appears to freeze for a little bit just before it attempts to display the data. i think it's the invoking. Is it normal / have a done something wrong?
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I have problem with multiple webbrowsers on form so i created simple form with 10 browsers in it and 1 button: Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
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When I click button and try to drag form1 everything is none or slow responding.I see web site loading in browsers but nothing is responding on screen until loading of pages is finished. In the meantime my processor it goes to 90-100%I tested exe on my laptop and is working same.