Error Trapping Text Box's

Jun 27, 2012

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]...


Getting Global Error Trapping

Oct 7, 2009

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]...

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Trapping Of Error Line With Try-Catch?

Dec 22, 2009

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.

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Error Trapping And Validation Of Fields In A Form?

Jun 8, 2009

If Me.CompanyNameTextBox.Text.Length = 0 Then


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Trapping Thread Being Aborted

Apr 22, 2011

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

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Try / Catch Not Trapping Exceptions

Mar 25, 2011

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?

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ActiveX Control - Trapping Tabs

Dec 6, 2011

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?

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Trapping Click Action In Webbrowser?

Mar 19, 2010

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.

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Trapping User Changes To A NumericUpDown Control?

Jul 29, 2009

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.

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VS 2008 Trapping The WheelMouse Events?

Oct 20, 2010

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?

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Using Setwindowshookex To Run A Callback System To Trap The Keys Just Trapping "windows" Key Atm

Jan 9, 2009

I'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)?

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Binding TextBox.Text Causes 'Input String Was Not In A Correct Format' Error When Deleting Text

Oct 25, 2009

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?

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Text Box To Allow VB Script Code As Text Without Getting An Error In Website?

Sep 29, 2011

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.

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Update The Text In The TextBox - Get This Error All The Time: "Public Member 'Text' On Type 'String' Not Found"?

Jun 6, 2009

I'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

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Getting An Error Highlighting Text 'next'

Apr 22, 2010

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.

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IDE :: Error Text On Datagridview?

Jul 18, 2011

I am using VB 2008 Version On the Immedate window Showing below meaages

?DGV(2, 1).Value
System.Windows.Forms.DataGridViewTextBoxCell: {System.Windows.Forms.DataGridViewTextBoxCell}

I am tryng the function Len(DGV(2, 1).Value), it gives error 

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Text Editor Error?

Jan 29, 2012

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


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Error 'txt____.Text' Is Not Declared

May 12, 2012

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.


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Error In Reading A Text File?

Feb 26, 2012

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


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Error While Writing Into Text File

Jan 30, 2011

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]...

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Getting Error In "IF NOT (txtEmpID.text = 0)?

Jun 26, 2009

I 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

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Predefined Text In Textbox Error?

Apr 18, 2011

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?

Sub Test()
Dim a,b,c


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SQL Error When Importing Text / CSV File

Aug 19, 2011

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 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]...

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Text File Being Used By Another Process Error

Jul 25, 2009

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."

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.net - Select Something And Change The Text Of A TextBox -- #name? Error

Oct 21, 2010

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.

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Error In String Comparison With Text File?

Feb 16, 2012

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


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Error Message Text Not Member Of String?

Feb 25, 2012

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


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Error When Trying To Convert Text File To Access

Dec 3, 2011

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]

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Error With Text Files When Update Within The Program

Jun 6, 2011

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.


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Find And Replace In Text File Error?

Jan 1, 2007

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


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Getting Error On Date/Time Text Field?

Jun 18, 2012

I am getting an error where the data is retrieved from the MS Access Database "Date/Time" field.The attached the error. Other fields which have text data type are working fine

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Parsing Error On Adding A Csv Text Value Into A DataTable In .net

Apr 19, 2011

I'm trying to add records from a CSV file into a dataTable in, as follows:

dim myObjAdapter as new myDataSourceAdapters.myTableAdapter
dim myObjTable as new myDataSource.myTable
myObjTable = myObjAdapter.Getdata


PS: in CSV file, the decimal digit is "." and if I add directly a record into table, using "." as decimal separators, the numbers get right format.

There is a kind of settings to change, or option to enable/disable on adding this records to do the right adding?

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Skipping Text File Read If Error?

Jun 18, 2012

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.



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VB - Can't Rename My Text Boxes - Error Message ?

Oct 31, 2009

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)

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VS 2005 Error Handling In Empty Text?

Aug 26, 2011

what is code i should use if i want to prevent user not to leave empty word in text box after user click save button.Oh ya, i am using visual studio 2005, databse sql 2005 .Here is my code

Private Sub btnregister_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnregister.Click
If MsgBox(" Are You Confirm", MsgBoxStyle.YesNo) = vbYes Then


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VS 2010 Text File Upload Error

Aug 23, 2011

When i try to upload my text file to my web server, i get the error:

"Could not find a part of the file C:UsersMyUsermyfile.txt"

This path is 100% correct.

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Error Messagesbut Text Boxes Are Not Returning A Total?

Jul 18, 2011

Sub Button5_Click(ByVal
sender As System.Object,


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Syntax Error When Doing Basic Math Using Text Box Entries

Dec 15, 2010

I'm making a part of my program that takes three inputs from the user and adds them then divides that number by three (the average of the three numbers). [code]...

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Text Files - Insert Multiple Textbox Value Then It Gets An Error?

Mar 12, 2011

Imports ATSMS
Imports Scripting
Imports System.IO[code]....

this is my code n it works well but wen i want to insert multiple textbox value then it gets an error.

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User Searching For Text / Getting 'Directory Does Not Exist' Error

Nov 7, 2010

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?

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