I have a searchbox that queries a database and shows the results in a box below. This is kinda slow when I use the ontextchanged event, cause the database gets queried each time a new letter is written.
How can I make it only do the query when the user is done writing, or each time the user takes a small break?
I am learning Visual Basic from a book and at the end of each chapter the book gives tasks to perform. The task i am currently on involves creating a simple game called "Pick up Sticks". The premise of the game is to choose a starting number of sticks at the beginning, say '55'.
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writing user info such as user, computer name, date, and time to an acces database using a button click event. Then use a query to check if the user has accepted the aggreement. If the user has accepted the aggreement then call a vb.exe that display the aggrement. I have a login script that runs the vb.exe and uses a button click that records the user info to a csv file, but if the user has already agreed to the policies I do not want it run again.
View 4 RepliesI want to have a one second pause after some code has run. During that pause, if a certain key is pressed, I want to do some action. Otherwise, I want the code to continue as normal. What would I use to replace the comments in the following code?
myTestCode()
' Wait one second and see if a given key was pressed.
' If specific key is pressed, then show messagebox (or whatever) asking user if we should cancel (whatever)
NextMethodToRun()
Yes, I know there are a number of ways, which is why I am looking for something that is fast and simple to use. I do not want a console window, some other form, etc. to appear. Just want to check if a key was pressed. The key (if pressed) should be pulled off the keyboard buffer.
Making a simple form that is to step through a program iteratively. How can I get it to run a method each time a user clicks a button and wait once it is finished for the next click?
View 2 RepliesIs there a built in way to know when a user is done typing into a textbox? (Before hitting tab, Or moving the mouse) I have a database query that occurs on the textchanged event and everything works perfectly. However, I noticed that there is a bit of lag of course because if a user is quickly typing into the textbox the program is busy doing a query for each character. So what I was hoping for was a way to see if the user has finished typing. So if they type "a" and stop then an event fires. However, if they type "all the way" the event fires after the y keyup. Like measuring the time since the last textchange event and if it was > than a certain value then it would proceed to run the rest of my procedures.
Language: VB.NET
Framework: .Net 2.0
How to make a program wait until a button is clicked by the user. I want to stop my sequence of codes (statements) until a button is clicked by the user.
View 1 Replieshow to code a function that causes a function to pause until the user either changes a radiobutton or hits the reset button or that will restart the function if one of the entered txt values or comboboxes Index have been changed and the uptade button is clicked.
View 2 RepliesI want to be able to run a thread and then at a certain point pause it and wait for the user to enter some text into a text box and then when they press submit i want the program to run again from where it left off.
View 10 RepliesI'm trying to work out how i can make my multithreaded app stop at a certain point and wait for the user to type something into a text box and click ok. It must then carry on and when a different thread gets to that point it stops again and waits for the user to input some text again.
View 1 RepliesWhile navigating to a series of sites at one site the WebBrowser control's DocumentCompleted EVENT is tripped and no other recorded Browser events occur after that. When this happens the hour glass cursor indicates the browser is waiting. From this point it take 120 to 250 seconds of wall clock time before the browser resumes. I am looking for a way to force an abnormal termination without destroying the control. I have tried "Stop", "nav to about:blank" repeatedly without success. How can I force an abnormal termination when the Cntrl is in a wait state?
Consider the following: The last known Browser event to be tripped is a Document Complete event; nothing else occurs after this. When this transpires the Cntrl is waiting.
1:50:657: ============================= ENTER WebBrowser1_DocumentCompleted EVENT ========================================
31:50:657: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^THE NEW WEBBROWSER STATEMENT
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I'd like to know if there's a better way to read/write various user settings to disk. My program loads up a bunch of settings during load but also during execution from a few different forms, encrypted string values, boolean values, different types. The code seems to work okay but I have a feeling it's just not the best way to be doing this. Some of the settings are encrypted strings that have to be decrypted/encrypted so the code to read/write the text file is a bit different on some items. The data read from disk usually goes to a public string, a textbox, or a up/down type control. Below is about 1/10th of the settings that get loaded/written at various times. Anyone have a better way that might be more efficient that I should look at?
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Eg. ""vb.net" timer event trigger on purpose". This application is meant to run at all times to download a web page every minute. To avoid freezing the UI, I read that the best solution is to move the code from a While/Sleep loop to a Timer that will be triggered every minute. The problem I have, is that the user must wait for a minute before the event is triggered:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Timer1.Interval = 60000
Timer1.Enabled = True
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Is it possible to force this event to occur instead of waiting for it?
I have a windows project with an MDI interface.
I want to add a menu item called "Help" and when clicked load a HTML document I will create with another application.
Can I do that in a windows .NET 2008 program?
I have create a vb.net app that creates an excel spreadsheet. When I deployed the app, to the shared drive, I have no problems but the user gets the below error. The user can create the spreadsheet but gets the error when writing. When the user logs onto my PC, the user does not get the error. When I log onto the users PC, I got the error. Application attempted to perform an operation not allowed by the security policy To grant the application the required permission, cintact your local system adminsitrator, or use the Microsoft .net framework
request for the permission type 'System.security.permissions.securitypermissions mscorlib
version 2.0.0.0 culture =neutral
Publickeytoken='b77a5c56193e089'
I have tried to use caspol but it doesn't help?
writing a function to validate that a user has entered their full name (so at least two names must exist in the textbox).
View 2 RepliesI have a quick question. One of the functions in the program I am writing is to take all of the data entered, compile it into an HTML document, then place that document into a folder.For the past few days, I have just been using a random folder on one of my hard drives to dump the file in, but the problem is that, in my code, I have supplied the folder location as a string ("E:Practice FilesDocuments"), and therein lies the problem. Trying to test my program on a separate system brought the bug to my attention; obviously, this program can only write this file to a location of E:Practice FilesDocuments, and if any other computer that runs this program doesn't have E:Practice FilesDocuments then there is going to be a problem in the program working the way I have intended
So what I would like to do is instead of having it write the file to "E:Practice FilesDocuments," have it write to the default My Documents folder so that the program is no longer specific to my machine only. The problem is, though, I have no clue what the right code is to use. I first tried using
System.Reflection.Assembly.GetExecutingAssembly().Location to write the file to the default installation directory. This would have worked, but since this is a VB.NET program, the default installation directory isn't in Program Files and doesn't seem to be meant for users to browse through for their documents, plus it seems that trying to write back to this directory causes some unhanded exceptions and whatnot. I figured it would just be easier to create a folder in My Documents rather than use the install directory (and probably smarter).
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I have a basic page which has fields that I read from the database and write to it. I would like to know where I should call the insert and read commands. I know about age_load but heard about page_loadcomplete.I noted that when the user refreshes the page, for some reason the sqldatasource loads the old data(before the write) even though new data has been loaded on the form.
View 2 Replieswhat is the different writing code application vbnet 2005 application for single user and multiuser?
View 3 Replieshow to use wait.forcondition
View 2 Replieswait for 1 ms in visual basic 2005?
View 2 Repliesok I have a program that controls another program.. but sometimes the other program is not running.. so I ask the question "do you want to run it up" so if they it takes like 15 seconds to come up.. so really I dont want to do much on my program while we wait for that other program to finally come up..
normally when my program comes up I make sure the other app is running.. and it would come up before you would click on something to try to call it.. but during the day.. maybe their app crashes.. so then right before I try to make a call to it I will check if its running.. so I want to run it up but kinda put a hold on my code while it waits..
so whats the best way to do this ? stop my code.. call a timer and when it see's its up call again ?? or can I put in some wait in the code then continue... just looking for the best method people have used..
Im trying to edit an item in a listview. I can edit the item ok but i want to execute code to rename the directory after the edit. The code executes before the edit is completed? Is there a way to wait until the name has been change first? [code]
View 8 RepliesI´ve got a Full Screen app witch launches other app and wait until it has been closed, when it detects that, the first application is launched again full sceen with this source code:
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I want to add a wait process form instead of the wait cursor effect while the method block execute codes.[code]...
View 8 Repliesi have have a MDI child form which have different textbox for criteria and a datagridview for result.When i launch the research i change the cursor : me.usewaitcursor = True when it finish i go back me.UseWaitCursor = False It works but some times (not all the time) if you move the cursor over the datagridview during the research, the cursor still in WaitCursor OVER the datagridview, it didn't go back to default but on the rest of the form is good (default arrow).I have tried whith : Me.cursor , cursor or cursor.current but i have the same result/problem.
View 9 Repliesi have this
Private Sub typendetextbouwen(ByVal texttetypen As String)
var_Numberofchars = 0
var_Numberofcharstyped = 0
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How to make the "Im Marco" wait? else it wont typ the first line
I designed a application on vb.net 2005. Some of the forms in this application has databindings controls. Now when such forms loads it takes some time. I want a splash screen or wait dialog containg "Please wait" message to appear till the form loads and the wait splash screen would be shown for every several forms in the application not only before the start up form.
View 11 RepliesI know how to launch a file or executable in VB .NET 2005. The file will launch and xecution in the code continues immediately.Process.Start("MyProg.exe")But what if I need to start the program, wait until it finishes executing, read the exit code that it sends back, and take some action based upon th
View 7 RepliesI know how to launch a file or executable in VB .NET 2005. The file will launch and execution in the code continues immediately.
Process.Start("MyProg.exe")
But what if I need to start the program, wait until it finishes executing, read the exit code that it sends back, and take some action based upon the action code? How do I do that?