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]...
In my code I'm using the Try-Catch functionality. All errors are written to the event viewer.I do it now with identifying the lines of code with a number.
View 7 RepliesTry
If Me.CompanyNameTextBox.Text.Length = 0 Then
MessageBox.Show(
[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
View 6 RepliesI 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?
View 4 Repliesi 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?
View 1 RepliesI 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.
View 7 RepliesFor 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.
View 8 RepliesIs 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?
View 5 RepliesI'm making a kiosk style desktop replacement.
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?
View 4 RepliesI 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.
View 1 RepliesI've created a private sub called addIRCRoom Which makes the Tab and the TextBox, but i can't figure out how to update the text in the TextBox.I've made this function to handle it:
Private Sub displayOut(ByVal Channel As Object, Optional ByVal User As String = "", _
Optional ByVal Message As String = "")
Channel.Text = "<" & User & "> " & Message & vbCrLf
End Sub
But i just get this error all the time: "Public member 'Text' on type 'String' not found."how to update the text
Getting an error highlighting the text "next"...List that this enumerator is bound to has been modified. An enumerator can only be used if the list does not change.
View 3 RepliesI am using VB 2008 Version On the Immedate window Showing below meaages
?DGV(2, 1).Value
{System.Windows.Forms.DataGridViewTextBoxCell}
System.Windows.Forms.DataGridViewTextBoxCell: {System.Windows.Forms.DataGridViewTextBoxCell}
I am tryng the function Len(DGV(2, 1).Value), it gives error
I am making a text editor.I downloaded someone else's Project and found 1 bit of code did not work.
Private Sub openFileDialog1_FileOk(sender As System.Object, e As System.ComponentModel.CancelEventArgs) Handles openFileDialog1.FileOk
End Sub
[code].....
I cannot figure out what is wrong with my code. Yes I understand its giving me 4 error messages about visual basic 2010 Express seeing some of my variables as undeclared. Below is the code.
[Code]...
In my project i read text file line by line by checking with a specific word and store that line into textboxes.
My code id
Dim fName As String = " Z:\rdf1.txt" 'path to text file
Dim testTxt As New StreamReader(fName)
Dim allRead As String = testTxt.ReadToEnd() 'Reads the whole text file to the end
[Code].....
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]...
View 10 RepliesI am having an error in "IF NOT (txtEmpID.text = 0). I just can't figure out place other form(child) at the center of midi parent
View 1 RepliesI 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?
Sub Test()
Dim a,b,c
a=Textbox1.Text
[code].....
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]...
View 13 RepliesI 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.
[code]...
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.
Dim fName As String = " Z:\rdf1.txt" 'path to text file
Dim testTxt As New StreamReader(fName)
Dim allRead As String = testTxt.ReadToEnd() 'Reads the whole text file to the end
[code]....
I keep getting an error message in my code "text is not a member of string" on each line similiar to: TextBoxVerb1 = TextBoxVerb1.text.Trim and I can't figure it out. Here is the code:
Private Sub Buttonsubmit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Buttonsubmit.Click
Dim str As String
[Code]....
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]
View 4 RepliesI 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.
[Code]...
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
[code].....