i have the following code for getting the number of files on a drive:[code]I want to skip the files which i dont have access to. But my error is occuring before the try hence i am not able to continue the loop.Please advice on how should i continue the for loop disregarding the error.
View 7 RepliesI have a 'For Each...' loop in the VB.NET code for one of the pages on my website. There is also a Try/Catch block within this code that currently contains an 'Exit Sub' in the event of an error being trapped. However, what I would actually like to do is to merely exit the current loop value and recommence the loop at the next value in the sequence.
How can I do this?
what if you created a pool of numbers: 1 - 21 and then chose a random selection from the pool? Something like the following:[code]This gets rid of those messy if statements and all of those loops.
View 1 RepliesI have the following problem:
I've got 3 lines
If I click the "next" button
Line 1 shall be highlighted
Then I I click ""next" again
[Code].....
a for i = 1 to 3 to loop within the Button1_click makes i directly 3 of course so line 1 and 2 will not be highlighted.
I am not allowed to use a msgbox in between cause then it would be easy, cause I would wait until "OK" would be pressed...
How can I make this for i = 1 to 3 loop work and highlight the lines 1, 2 and 3, one by one after pressing the "Next" button?
Dim d As Integer
For d = 0 To TextBox2.Text
WebBrowser1.Navigate(TextBox1.Text)
//a code that pauses the loop but does not stop the browser thread
I have this do while loop that I am having trouble with. I need to know how to make the loop continue to the next line after it has looped around once. So far I have it outputting like this.
$*$*$*$*$*$*$*$*
But what I really need it to do is output like this
$*$*$*$*$*$*$*$*
*$*$*$*$*$*$*$*$
$*$*$*$*$*$*$*$*
*$*$*$*$*$*$*$*$
$*$*$*$*$*$*$*$*
*$*$*$*$*$*$*$*$
$*$*$*$*$*$*$*$*
*$*$*$*$*$*$*$*$
I am creating a small applicaiton for simulating dice roll. To simulate bounces I change the position of the picture randomly. Now to simulate more than one bounce, I used a for loop to continuously change the position of the picture box. But it is not happening as I planned, the form only displays the position of the last loop. I even tried using System.Threading.Thread.Sleep(1000) hoping to show the bounces, but even they show the last loop only.
For bounceCount As Integer = 1 To bounces
bounce(pb_dice1)
bounce(pb_dice2)
System.Threading.Thread.Sleep(3000) 'I need to pause here and show the recent change in position then continue after 3 seconds
Next
the bounce method changes the position of the PictureBox.
How can I pause my for loop, display the newly positioned dices, and then continue after 3 seconds?
I would like to terminate a do until ....loop when future value is greater than 1000 without using a Exit or Continue statement.
Do Until inti > intMonths
decFutureValue = (decFutureValue + decMonthlyInvestment) * (1 + decMonthlyInterestRate)
If decFutureValue > 1000 Then
[code]....
When I do the try/catch method in my vb.net project I will try the code I want and when it can't do it, i make a message box right after the catch method. The thing is that it will show the message box, and then another message from the program itself. Like for example, I have here a MySQLException, and when i click ok on the message box, it will show another one right after showing the exception itself. How would I be able to get rid of this so the user doesn't have to see this, and the program can continue.
View 2 RepliesBasically i am trying to make a form which is in essence a switchboard. Just some buttons to launch some executables. Here is my
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[code].....
SoftwareVersion: Visual Basic 2010 Forms and Applications...Application shows unhandled exception error message..How do you disable, or auto-click continue on all "Unhandled Exception" error messages?
View 8 RepliesI got an text file that record data, and I need to read the data and do some comparisons. All data read will be showed in a form. If the data is fail, I need to show an alert to the user and wait for user to respond. If user responded to the alert, the program will continue to read data and do comparisons. The issue that I'm facing is that I don't know how to continue read file from the last read point.
View 19 RepliesI have a solution with two projects. The main project connects to the second project via a reference, and the reference path is local to my machine. It looks like it references the .exe file.So when I publish the main project (ClickOnce), i get the following error:
Application validation did not succeed. Unable to continue.In the log file, under Error Details, it says
System.Deployment.Application.InvalidDeploymentException (RefDefValidation)
- Reference in the manifest does not match the identity of the download assembly Project2.exe
- Source: System.Deployment
How can I include this second project? Should I publish it, then reference the published files? What do i reference? The .application file?Is there a way to just include this second project, so when I do publish the main project, the second one just goes along with it?
an application i developed using vb 2008 express, to fill a web form with data from an access database, one after another when a button is clicked hasn't given me what i expected. the loop was suposed to stop after filling web form with the first data on clicking a button and continue to fill the webform with the next(2nd) data from the database on clicking the button again. Below is the code i wrote
Private
Sub STARTButton_Click(ByVal
sender As System.Object,
ByVal e
[Code]....
I publish my project normally to a folder in my computer. When I run the setup the following message appears:
"application validation did not succeed. unable to continue"
I am using a SQL Server database in my project, I don't know if it has anything to do with that..
I�m having trouble with my VS. It gives me the error "insufficient memory to continue the execution of the program". This is a dangerous error because I cannot save the project either. So all work is for nothing. Actually VS destroyed my mainform at one time due to this error.
Now there shouldn�t be anything wrong with the computer or the project. The computer is new and with ok performance. The program runs ok on other computers (up to 5 yrs old) both published and in debug. On the old computer I use VS express, on the new I have Pro.
I think it has something to do with the graphics (I have added one or two pictures to the project since testing it on the older computer). VS graphics really doesn�t work like it should.
I have a mainform (the one that got destroyed) which I want to use as a MDI container. I want to have a picture as background. That doesn�t work (!) so I use a picturebox instead. When showing childforms the idea is that som part should be transparent, thus showing the MDI�s background.
In debug, as well as after publishing, the result is the MDI shows, and it actually has the picture as background. However the childforms don�t show at all. They show up in the window toolstrip though. Needless to say I cannot save the project because of the memory issue.
So, am I right in assuming that VS cannot handle a simple .bmp picture, or what should I do to be able to continue developing?
Makes the following statement about the code below:
**"The computer evaluates the loop condition in the Do...Loop statment to determine whether the loop instructions should be processed. In this case, the inputsales <> String.Empty condition compares the contenst of the input sales variable to the String.Empty value. As you know the String.Empty value represents a zero length, or empty, string if the inputsales variable is empty, the loop condition evaluates to True and the computer process the loop instructions. *If on the other hand the inputsales variable is not empty, the loop condition evaluates to false and the computer skips over the loop instructions.
Based on the code I think it is the opposite: ...that while the inputsales value is not empty it should evaluate to true and process the loop and if it is empty it should evaluate to false and skip the loop?
See below.
Option Explicit On
Option Strict On
Imports System.Globalization
[CODE]...
test
For Each p As Principal In objGroupPrincipal.Members
lstUsers.Items.Add(p.Name)
[code].....
VB.Net 2002 - Framework 1.0..I have below code and getting syntax error in For Loop at "To" [code]Error is at To in For loop.
View 3 RepliesI am trying to do a while loop with dates but I an getting an error:
Here is my loop:
Here is my error:System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
i want to read table row by row i have table with two columns but i want to read the first column only row by row her's my code
Dim col As String = "SELECT users.user1,users.valueid FROM users"
Dim cmd As New OleDbDataAdapter(col, CON)
Dim ds As New DataSet
[Code].....
I decided to go back to the VB6 book, "Learn to Program Visual Basic Objects", so I can code it in VB2010. This has been a great learning experience. However I've run into a problem. I'm getting an error with a For....Each loop for a collection class. The error message states, Expression is of type 'China.Order', which is not a collection type." From what I've deduced the problem deals with an enumerator. I could be wrong.
View 2 RepliesCode:
p = -1
Try
ListBox3.SelectedIndex = p
Catch ex As Exception
ListBox3.SelectedIndex = -1
p = ListBox3.SelectedIndex
End Try
Just cycles through my listbox without exiting the try. It keeps having an error causing the catch again.
I wrote a program which loops through a very long CSV file (50 meg) and parses the data as it goes.Sometimes, the program aborts and I get the following message:The CLR has been unable to transition from COM context 0x37a090 to COM context 0x37a200 for 60 seconds. The thread that owns the destination context/apartment is most likely either doing a non pumping wait or processing a very long running operation without pumping Windows messages. This situation generally has a negative performance impact and may even lead to the application becoming non responsive or memory usage accumulating continually over time. To avoid this problem, all single threaded apartment (STA) threads should use pumping wait primitives (such as CoWaitForMultipleHandles) and routinely pump messages during long running operations.
I know its going to take a while. There are several hundred thousand lines of text in the file that this program is reading. I am not sure exacly waht the message means, but my program seems to work fine other than the message. odd thing is sometimes the message doesnt always pop up..
Small error with if loop and msgbox
View 8 RepliesI have below code and getting syntax error in For Loop at "To"[code].....Error is at To in For loop.
View 1 RepliesHere is the code:
CODE:
What I want to do is I want to post to different referers one at a time and of course the links will be provided by a richtextbox(i.e. richtextbox1.lines(i) ). I will use only password(which will be chosen by the user from a combobox(combobox1.text)) because the username is harcoded. This is what so far ive come up with but it always gives me the result of the first line(or referer) from richtextbox1. I think there might be a problem with my "FOR" code.
CODE:
I have a backgroundworker that is downloading data from different webpages and process them to a datagridview.I get the Cross-thread operation not valid error on the first For loop.
Private Sub BackgroundWorker1_DoWork(ByVal sender As System.Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles BackgroundWorker1.DoWork
dim i as integer
tot = (numPostnrTo.Value - numPostnrFrom.Value) / 10
[code]....
I am encountering an error when looping through datarows. I searched SO and tried the solutions, but no luck. Collection was modified; enumeration operation might not execute.
Dim dRow As DataRow
For Each dRow In dt.Rows
dt.Rows.Add(dRow("CustNum"), dRow("SalesRepName"), dRow("mgrid"), "=""" & dRow("midValue") & """", dRow("dba"), dRow("sysDate"), dRow("statusID"))
Next
The error occurs the first time the code hits "Next". What would be causing Collection was modified; enumeration operation might not execute.How can I resolve this error?
i got error when
1.) Looping exceed the images files found in the folder
2.) When program get not valid file
3.) when changing the source of images
the error says "Parameter is not valid"
here is the code below....
Function getnewImage()
Try
If (Me.Ping.Send("pc1", 6000).Status) = Net.NetworkInformation.IPStatus.Success Then
[Code].....