converting this to parallel for loop, this will be my first time on parallel for loop. i have this nested for loop, it looks like this:
For i As Integer = 0 To FlowLayOutPanel.Controls.Count - 1
Dim TempUserControl As New UserControl
TempUserControl = FlowLayOutPanel.Controls.Item(i)
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I am trying to convert the code below into a parallel loop. What is the proper syntax to use Parallel.ForEach instead of just ForEach?
For Each grow As GridViewRow In gvEmployees.Rows
SendSummaryReport(grow)
Next
I've been trying to get this method to run parallel so it can take full advantage of all processors, and it seems like the data is running over itself. I didn't originally write it, so I'm having a hard time figuring out where it's running over itself when it runs parallel. It gets good data when it runs in a regular For loop.
Parallel.For(1, endm, Sub(m)
'Debug.Print("Top of loop: " & Now)
For p = 1 To rowend
[code]....
if there's any overload that would allow me to specify a step size in a Parallel.For loop?
View 1 RepliesI need some guidance on a little program I'm making (one that I thought would take a couple of hours from start to finish, it's been days now ...) that determines all of the proper divisors of any given number up to the maximum value of a UInt32.
View 8 Repliesi have data in an array list called txtarray which contains numbers, how can i loop through the array list and convert the values from into a integer variable?
View 7 RepliesI have a service that scans network folders using a parallel.for method. However recently I am finding if I stop the service then while windows says the service is stopped the process is still running in task manager. However it is at 0 cpu and the memory does not change. If I try and end the task (even a force in command prompt) it just says access denied and i have to reboot the server. What would be the best way to make sure everything terminates? I thought of adding a global Boolean that in the stop procedure it turns true and part of my parallel code will check for that and call s.stop.
View 1 RepliesI've been trying to this application in Visual Studio 2010 to only write to the parallel port, so supposedly it would be a very easy task, and by all the tutorials in the internet i've seen before it really is! Although it throws me always the same error which is too generic and don't give enough information for me to solve it. I'm doing this using the "Inpout32.dll" library to make the communication between VB.NET and the port..
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I've been trying to follow the examples I've found online and, well, I can't really get my head around what I've done wrong.So, I have a simple piece of code to search for a machine in AD, as so. [code]
View 5 RepliesI want to expand it a little bit and add a second timer that runs parallel to the first timer, but is not affected in any way shape or form by the first timer.
I want the timers to run like this:
Time Timer1 Timer2
0 X X
1 X
2 X
3 X
4 X
5 X X
6 X
7 X
8 X
9 X
10 X X
Ive tried nesting the second loop in the first loop but the second loop takes 3 seconds to complete, so I found that it froze the first loop till the second loop finishes. I was reading about system threading (System.Timers.Timer) and it seems like that is the route I want to go.
I wrote this quick as an example:
This assumes that I added a windows timer control as timer1
vb
Option Strict On
Imports System
Imports System.Timers
[Code]....
Can someone tell me if the functionallity to control a parallel port in MS VB 2010 Expess exists? I was expecting to have to add a reference such as the microsoft comm control 6.0. However this reference does not appear in the list. Everything I search for references .net 2005/2008.
View 4 RepliesSuppose you have an array with 10.000.000 elements filled with values between 1 and 10, and you need to count how many fives it contains, something like:
Dim RandList As New List(Of Integer)
Dim r As New Random
Dim Counter As Integer = 0
For i As Integer = 1 To 10000000
RandList.Add(r.Next(1, 10))
[Code] .....
Here I got 2 problems, both versions are returning different values at each call with the same array, and the sequential ForEach is being executed much more faster than the parallel.
Does anyone have experience writing data to the parallel port (printer port) in Windows 7 64-bit. I have been trying inpout32.dll, inpoutx64.dll and following all the info on http://www.highrez.co.uk/ and www.logix4u.net but can't get anything to work. I have an on-board parallel port at &H378 - not an add-on card - and have tried various modes in the BIOS (standard, ECP etc). I have a background in electronics so I am confident my testing methods are sound; I just cannot get a data bit to change state under program control. I need to send data to an 8-bit port on some 20th Century electronics so serial/USB interfaces are not really an option. There must be a way to control those 8 data bits in Windows 7, mustn't there?
View 14 RepliesI am trying to convert the code below into a parallel loop. What is the proper syntax to use Parallel.ForEach instead of just ForEach?
For Each grow As GridViewRow In gvEmployees.Rows
SendSummaryReport(grow)
Next
I have 7 parallel arrays, and I would like to sort them all by two of them. That is I have the following arrays...
_weeknum()
[code]....
How do you convert a loop to a for loop
View 5 RepliesI tried so many times to convert this to DO UNTIL LOOP unfortunately it does not work properly can you help me?
Heres: the code
CODE:
I have a For Loop, how can I convert that by using Timer event. I want to use Timer so I can add a 5 sec, 10 sec and 15 sec pause (interval) for each every loop. [code]
View 1 RepliesI am new to vb and need some help with this change program. The idea is that we are given a certain amoun of change and then telling how many dollars, quarters, dimes, nickles and pennies. I thought I would convert the decimal to an integer and then use a while loop for every text box, i.e. dollars, quarters, dimes, etc.., to show how many of each, but the while loop is confusing for me in vb, but to tell you the truth I don't know if I am on the right track,
[Code]...
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]...
I can't get the loop to work. The calculator is suppose to show how far someone goes for each hour increment (i.e. if they punch in 3 hours, it should show a number for 1 hour, 2 hours and 3 hours; if they punch in 10 hours it should show a number for 1 hour, 2 hours, 3 hours....etc. up to ten hours, etc.) I can't get it to show anything except for the total number of hours traveled and total distance.
Private Sub DistanceButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DistanceButton.Click
Dim speedIsValid As Boolean
[Code]....
How can I convert a C# 2010 project to VB2010?
View 3 Repliesit is written in vb 2010 using for next loop to create a pattern like
1
12
123
1234 and so on
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Looking on different sites, i'm getting difficulty in understanding nested for loop. About how it works?
View 8 RepliesI want to get data from a txt file.Then use line by line in loop.Means loop get a line then execute it then get next line and so on, up to a limit.Now what I have to do?? "For" loop is runs only for integers..
View 6 RepliesI'm using a picture box to show an animated gif on my form. When i created the gif, I set it so it only loops once. The gif plays correctly in a browser, but when i set the image of the picture box to my animated gif it continuously loops.
I only want to loop once through the images embedded in my animated gif when i set the image of the picture box. What is the easiest way to do this? Does anyone have or know of any sample code to do this? I have been searching this for a while, but have not been able to find anything.
I currently have a function that loads an XML and takes all of the nodes and makes an object with them and adds them to an array.I need to be able to now see if there are more than one xml doc in a folder, and if so also add their objects to the array until all of them have been read. How would I go about doing this? I've been searching through the System.IO. to see if I could find something but I haven't been able to yet.
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I was wondering how someone could stop a For loop in the middle of it, according to parameters. I have tried but cannot find a solution that works, I suppose an example of this would be if a loop were increasing a label by 1 from 0 to 100 and the user sets it to end at 57 or any number in between and when the loop reached the number to stop.
View 8 RepliesHow can I loop TimeGetTime? Public Declare Function timeGetTime Lib "winmm.dll" () As Long Public Declare Function timeBeginPeriod Lib "winmm.dll" (ByVal uPeriod As Long) As Long
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I'm trying to loop through a collection object in vb2010.The code was originally used in Vb6 The book said that I needed to code a NewEnumerator method first in order to be able to loop through my collection. I coded the following:
[code]...
It gives an error for IUnknown, staging that IUnknown is not accessible in this context because it is a 'Friend'.In the line in the function I removed the Set since it's no longer needed.The error message for this line is '_NewEnum' is not a member of 'Microsoft.VisualBasic.Collection'What are these messages and how do I fix this in VB 2010?m_colCourse is not a system collection.
