VS 2005 - Counter Not Incrementing Properly?
Apr 7, 2010
why my counter is not working properly. It starts by counting all of the files in a directory and everything is set to 0 initially at the start of the program. For some reason when I debug it in certain places the counter increments correctly but with no debugging and once it reaches my DoSql function the counter is not set to the correct number of files anymore.. Below is my code, filesRemaining should be initially set to the number of files then decrement everytime.. when I debug this method itself it works fine but say I put a debug point elsewhere or don't debug at all the counter is not right.
'Declare global variables
Dim fileNumber As Integer = 1
Dim arrayPosition As Integer = 0
Dim changeType As Integer = 0
[code]....
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Mar 17, 2009
I want to make several linklabels for some links I have in a DB. I want the program make a new linklabel for each link automatically.I thought of something like this:
static counter as integer
Static point As Point
point.X = 50
[code].....
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Mar 31, 2010
I'm not sure what I am doing wrong with counters using a delay but it keeps causing my program to crash. I am trying to use a try/catch for a IO exception involving filename already existing. I have a stored procedure that deletes the file from the directory but if my VB code tries to put the same file there it is supposed to encounter my try/catch and run the counter for a pause time until the file is deleted. Well each time it reaches the counter through debugging or not my main program (windows form) just hangs up and becomes unresponsive. I have tried waiting and stepping through/over the try catch but it still remains locked up.
[Code]...
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Sep 14, 2009
I have 3 classes that need themselves in order to do their work but if I declare them the old way it would end up being an endless loop.
As an ex C++ programmer, I know I could use include once but I don't know if there is any equivalency in vb.net Here is the picture.
I have 3 Classes : SQLConnector, ErrorHandler, LogHandler
- ErrorHandler needs SQLConnector to get some IDs from the Database.
- ErrorHandler needs the LogHandler class to prepare the Logs to be... logged.
- SQLConnector needs the ErrorHandler class in case there is errors happening.
- LogHandler needs SQLConnector to insert in the database.
- LogHandler needs ErrorHandler in case the insert is not successful (sends mail in that case)
As you can see, all three classes are needed. The reason why I can't use LogHandler and ErrorHandler as one class is that I will use that class to log transactions and changes according to some parameters. Log is in no way exclusive to ErrorHandler.how I can prevent to make an endless loop and use all three of them as I wish?
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Nov 23, 2010
vb.net
"Button_Click event"] Dim dt As Date
dt = Now
Select Case cmdUserSave.Tag
[Code]....
my problem is : when i am trying to save data in sql server management studio 2005 then data will be saved but with some garbage date. date is not saving properly.
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May 20, 2010
I have this code sample from a book I'm reading which looks to be incorrect:
Imports System.Diagnostics
Sub Main
Dim pc As New PerformanceCounter("PerfApp", "Clicks", False) 'excepiton here
pc.Increment()
counterLabel.Content = pc.NextValue().ToString()
End Sub
There excepion message I get is: The requested Performance Counter is not a custom counter, it has to be initialized as ReadOnly. I looked for a property to see if I can set it but couldn't find one.
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Nov 11, 2009
I have a desktop application that shows a list of pdfs, and when the user selects one it shows it to him/her. I use the AcroPDF control for this, and it seems to work, but if the user goes back and forth between viewing the file and viewing the list, then the control randomly decides not to show the file (showing a blank page instead).
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Jul 22, 2011
I have an application that runs perfectly on XP. When I run in on Win 7, it works perfectly when I run it in the IDE but when I deploy it, the application starts OK but some of the functions don't work as they should. I know it could be anything but does anything stand out?
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Feb 9, 2009
VS 2005 Handling currency properly
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Apr 9, 2009
The app Im working on is dunning on an embedded xp machine. It recieves input from the serial port from an industrial process, and then a backgroundworker class calculates and updates the single form GUI with the results from the process. Very simple.Now, the customer want to allow automatic download of log files by an USB memory. The process should work like this:
1)User plug in an usb memory
2)SHow a virtual keypad (touch screen) where the user enter a security code
3)If code ok, show a 3 choice screen, if not ok show error message and allow the user to try again.
4) If user choose the "export all" button, this choose form will close and i display another form with a progress bar that show how all files are copied to the usb memory. When this process is complete, I will display teh form that says "remove the usb memory and press ok to restart the application.
As you see here lots of forms are created and disposed based on user choices. My biggest issue here is that I have no clear design pattern to work from.For example.. should I have this "chain" in the main gui form, or should I let each form create the next form. For example on the "select action" form, when I press export, should this form create and show the "copy progress" form, or should all forms be created and destroyed from the main gui form?
Also, such an issue like with the password. I put it as a constant on the main form, to avoid "magic numbers" in the code. And then I ran into problem because the "keypad" form is created on another thread and I can't access the costant on the main form, so I got a cross thread exception.Everything starts when an USB memory is connected. And the OnConnected eventhandler is running on a different thread than the main UI thread. how to design this chain of window creation/deletion is greatly appreciated. I show all forms with the SHowDialog because I dont want the user to be able to close the form unless he/she presses a button. And not by accident press somewhere else.
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Mar 29, 2010
I am using VB.NET 2005 and running non embedded crystal reports from the SQL server and have following variables database name, server name, user name and password in the application settings editor and given the default values.
I have created a form that allows these settings to be changed by the user and the probem that I am having is that, the reports are still running with incorrect credentials. The following code runs when the user modifes the values and clicks OK button
[Code]...
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Jan 7, 2011
I am developing windows application in visual basic .net 2005. I am using datagridview and i want to handle its horizontal scroll event. i was using code below,
[Code]...
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Jul 17, 2009
I did this Imports System.Data Imports System.Data.OleDb Public Class Form1 Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code]...
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Jun 22, 2010
I am looking for a code snippet which opens a image, creates a clone of this bitmap in memory disposes this opened image so that all handles are closed.
Usually we can open a bitmap using this[code...]
the following code however keeps the Image File locked until the application is running, any suggestions how to dispose it properly. (So that no handle is left open )
Things i already tried: use dispose method of bitmap <= doesnt work (need to write implementation)
Using Block also doesnt work.
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Jun 8, 2011
I have some ActiveX that was written for VB6. They all seem to return Variant types. Ex.
[Code]....
In this case the GetPosition control is returning a robot axis position. It looks to me like the values coming back from the function is not getting converted to object type properly.
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Jun 7, 2011
Possible Duplicate: Way to get unique filename if specified filename already exists (.NET)Have a look at the following code:
Dim counter As Integer = 0
While System.IO.File.Exists("C:DesktopSample.xls")
counter = counter + 1
[code].....
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Jul 18, 2010
I'm trying to increase the value of a registry entry by 1
HKLMSoftwareMyApp
Key = Test
Value +1
[Code]....
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Jan 27, 2011
i'm doing this for auto incrementing i called the last value in a row from a database for say, its p-0004 what i wanna do is take p-0004 and add 1 into it to make it p-0005 sorry for my stupidity, i tried using the trim method i used in vb 6 but there was an error like "read only property" something
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Aug 16, 2011
i'm doing this for auto incrementingi called the last value in a row from a databasefor say, its p-0004what i wanna do is take p-0004 and add 1 into it to make it p-0005sorry for my stupidity, i know this is a noobie question but hey, i'm a noob
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Aug 5, 2011
What is the += used in this code doing? Is that incrementing the loop?
Public Class Form1
02
Public Structure Family
[CODE]..........................
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Jul 11, 2011
I am trying to make a simple port scanner to scan a rang of IP's so like 192.168.4.245 to 192.168.5.100. I am using Visual Basic.Net 2010 and am having trouble converting the IP from a String to a Long so that I can increment it and convert it back to a String. For some reason VB.Net 2010 doesn't include the winsock controller and therefore I am having problems finding a method that works similar to inet_addr() which makes conversion much easier. I found an example on one of the forms here
Code:
Private Sub Command1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Command1.Click
[code]....
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Feb 1, 2010
When you access a subroutine by one or more other subroutines each time the variables are zeroed like 'n' below. How can I keep n saved so main can increment n each time.
Public Class Form1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code]....
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Jun 20, 2009
I've been looking into this problem for a few days now and i can't find exactly the code that i want.I want to run a procedure using an incrementing matrix. If the Matrix that was used is correct then the correct matrix is shown.
the process is get first iteration process if incorrect repeat with next iteration correct end the issue is with the iterations and breaking out of them the matrix length, depth and iteration step can vary.
this is best shown in an example
length = 5
high = 3
low = 0
step 1
the iterations should look like
[Code]...
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Feb 17, 2009
I have created a table with the following fields
loan_id (PK)
loan_date
loan_return_date
loan_user (FK)
i have set the loan_id column to increment in steps of 1, but when i add a column in visual studio 2008 express it auto increments in minus steps -1 -2 -3. it increments in positive numbers?
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Nov 15, 2011
I have some nested objects arranged like this:
Process
Persons
Workflows
Tasks
So you have one Process. Then multiple Persons can be added to and multiple WorkFlows can be added Process as well. Multiple Tasks can be added to each WorkFlow but I need a way to tie which Person is doing each task. I basically need a way that for each Person added to the Process it, in it's constructor, assigns a Person.ID property that can then be assigned into each Task's PersonID property...
Dim myProcess as New Process()
Dim myPerson as New Process.Person()
myProcess.AddPerson(myPerson)
[code]....
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Jun 21, 2010
I would like to know the coding behind incrementing a progress bar using a timer.
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Nov 18, 2010
i do have a table with 3 cols, 2 of those will visible for users to enter data, the last one is needed to get inserted as the next number of the previous number.
i use the following query for insert command ,
INSERT INTO [Headers]
(GrpId, GrpName, Number)
Select (Select Case when Max(GrpId) = Null then 1 else Max(GrpId)+ 1 end from [Headers]),
[Code]....
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Mar 10, 2009
I am doing a school project (in programming) on security, and i am focussing on MD5 hashing, this is a used way to store passwords, usernames etc. since i can't really be reversed..Now since i know that MD5 hashes are always 32 byte long there must be a limited number of different "hashes" even though 32 chars with 16 combinations each is a LOT of combos..Now, i will try to make a program where you put in a 32 byte hash and then, by using the principle above with limited hash amounts, try to find ANY string that matches the hash.I have already got code on how to create the MD5 hash but i need to know how to make the strings...it should hash:chr(1)chr(2)...chr(255)thenchr(1) & chr(1)[code]
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Dec 1, 2009
[Code]...
I am trying to replace tasks.IndexOf(t) + 1 with something a little simpler. Is there any built in functionality for this? Hrmm xml literals do not seem to translate well on here....
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Sep 8, 2010
I have code that increments an array of numbers. However, due to performance issues, I need to optimize it.
Here is the code:
Public Sub increment(ByRef Index() As UInt16)
Dim N As Integer = Index.Length - 1
If (Index(0) = 65535) Then
Index(0) = 0
[Code] .....
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