A user will enter a name and a text score of a student. The names and scores are saved in a list box and once they are stored I click 'show the array' and I get a parallel array filled with the names and scores.
I need to error trap the text box's so that when the user inputs a number its a number between 0 and 100. IF its not it needs to end the button click event.[code]...
What I want is a Global Error Trap that will not stop code execution. What I have found is examples where each module requires some code or a Try block. I need it to be totally generic. Everything from UnHandledExceptions to conversion errors.
If I have to use try blocks all over the place then it is not Global Error Trapping.
I need code at the highest level possible that will always catch any and all errors reported by VB.[code]...
I have an app in vb net 2005 which has code similar to' start external thread ShowRandom Images.start Open database & do other preliminary setup 'abort thread ShowRandom Images. abort 99 times out of 100 I never get a problem, but if system appears to be slow or other heavy processing, I get "Thread being aborted"..How can I trap or ensure the error message does not get to my users
I am working on an app that uses a third-party charting component.It is a .Net component. There have been some occasions when exceptions have occurred inside the third-party component code, but my try/catch is not trapping them.Should they get trapped?My code is structured roughly like this:[code]I have since found and fixed what was causing the exceptions, but I would have thought that this should trap them. What happens when I run in the IDE is that it crashes and Visual Studio throws up a page telling me there is no code available to debug, and no disassembly available.Fair enough, but I repeat - why doesn't the exception get trapped?
i am creating an activeX control... in this control i want to manage what the tab key does. i may a user interface that allows tabs in the textbox or it might move the user to the next screen. i have everything working in the IDE, but when my activeX is loaded into the 3rd party application the tabs no longer trigger the key down event. i assume this is because the parent application has tab stops is there a way on a control by control basis to stop the normal execution of tabs?
I am having problems clicking a link on a page.I was thinking of trapping the click events in the web browser when I manually click the link to see if it uses any other post variables from that page or what happens when I click the link.
For a NumericUpDown control in VB 2005, how do I distinguish between a change to the numeric value made by the user (by changing the text or clicking the up or down arrows), and a change made internally by my code? The "Scroll" event works for user changes to the TrackBar control, but not for me on the UpDown control, and the ValueChanged event doesn't distinguish the source of the change.
Is there anything I have to do to trap wheel mouse events?I have a panel and can trap the MyPanel_MouseMove events but not the MyPanel_MouseWheel events.In VB6 you needed to add wheel hook & unhook commands - do I have to do anything for VB2008?
Im using setwindowshookex to run a callback system to trap the keys just trapping "windows" key atm.
if I step through just as the program goes the the keyboardcallback function declaration line it pauses for seconds before moving to the next line. This directly precedes the new variable declaration of the callback variable
While running this leads to only 1 press of the "windows" keys causing several hits of the "youve pressed windows key warning" sometimes 4 or 5 times with large pauses inbetween inwhich the window is unresponsive.
The Start menu is normally blocked however occasionally during the unresonsive times it might pop up but this is rare.
Or common reasons/solutions to setwindowshookex being slow Anyone know alternative method of blocking all hotkeys (apart from the 3finger salute i understand that, that is not accessible)?
I am trying to bind a textbox to a binding source (using the IDE DataBindings Editor) and it works fine except for one thing: if I delete the text I get the subject error. What I want to happen is the datarecord field be updated to a dbnull value -- how do I get that to happen?
I have a TextBox and I want to allow VB syntax, but when I run the site and try to save the VB code to the database, I am getting an error. I believe the error has something to do with the VB code.I have put the httpRuntime requestValidationMode="2.0" setting in my web.config, and I've added validateRequest="false" in the directive at the top of the page, but it didn't resolve the issue.
Application log file have been created to monitor the process and following code has been used to write the log information into text file. For the first time there is no error encountered when the application runs for hours, may be 3 hours i am getting following error "An unhandled exception of type 'System.StackOverflowException' occurred in mscorlib.dll" [code]...
I have a program with three Textboxes that have numbers typed in as text. I have them dimensioned. When I try to use them it gives me an error "Cannot convert a String to a Double". I have tried to use a=CDBL(textbox1.text) but that did not fix it. Is there a solution to this problem?
When the connections is successful (which it does when ran). Button 1 Writes to the text file (which it does successfully). Button 2 deletes the contents of the table and not the table itself (which it does successfully). Last, button 3 is supposed to read the text file and insert each field which is separated by a comma back into the existing table. However, at the "addComm.ExecuteNonQuery()" step I receive an error (An unhandled exception of type 'System.Data.SqlClient.SqlException' occurred in system.data.dll). I have spent many hours trying to find a solution but can't seem to get it to rewrite the text file back to the table.[code]...
I have an App that saves one line of data to a textfile like this[code]... ' If I try to overwrite that file or delete it I get the error "The process cannot access the file 'c:windowsDScatalog.ini' because it is being used by another process."
For some sort of reason, which I can't seem to spot, this fails and I get a #Name? error. When I tried to do this, I use pretty much the same code in another place in my form; the only difference is the "cbo" and the names of my txt and alike.
Can anyone spot my error? What I wish the code would do is when I Select something in my cboVarenummer, the TextBox txtVarenavn changes its text to what the sql statement returns.
I am trying to insert data from a text file into an Access table. However, when I try to execute the command, I keep getting the following exception:A first chance exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll.And my Catch block throws me the "Unable to read file" error that I placed.[code]
I use text files to hold the program data, which is loaded in to variables when the program starts. I use StreamWriter to write to the text files when they update within the program. This is fine although the writer adds a extra line when I do not want this, which causes the program to error on the next use.
I have a project to complete and i have begun the code. What i want to do is go through the text file and find evey | (pipe) symbol and change it to a , (comma). I have the code and worked out how to do it but the code will only work for the first line. I was just wondering whether any of you had any advice on the way through this problem because i am stumped.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As_ System.EventArgs) Handles Button1.Click Dim strFile As String
I'm not really sure how to word it, if it is possible, but part of my program reads from a text file. It then pulls out the necessary information needed from that file by finding key identifiers. Right now the code is written to find the first key identifier and then read each line after that, locating each subsequent identifier and pulling the data from it. In a few cases, the format examples I've worked with are a bit different which results in a runtime error. How can I tell the program to essentially skip that part of the text file if it's not reading it right and continue moving on? Here is somewhat of an example of the text file.
I can't rename my text boxes, it gives me an error message" The name txtjeffSales is already in use by another component. But I just created the project aand there is no way that anything else has that name, even if I try slight variations of that name it just won't let me do it, wtf is going on here? Attached image(s)
I am trying to code a Search option for the user to search for any word in the KJV Bible in my program and the search should return every instance of the search word or phrase i.e. "Love".I checked the MSDN and forums and found an example that uses the FindInFiles method. I have a textbox called "Search" and a Go button. Under the click_event of the Go button, I have the following code (it returns the error "IOException was Unhandled"..."The directory name is Invalid".) [code] The entire KJV Bible is in my solution explorer folder: "KJV Bible". I don't understand the error. Is it my syntax?