Sleep Function While Processing Window Events

Feb 18, 2010

I wrote the below function to sleep, while processing the window events. It works well enough, but I'd like to improve the accuracy of the sleep. Example - If you call it with 10 msec (0.010), it can take up to 15 msec of real time before it exits. How to make it closer to 10 msec?

Public Sub Spin(ByVal TimeInSec As Double)
Dim tsStart As TimeSpan = Date.Now.TimeOfDay
Dim tsNext As TimeSpan = tsStart
Dim TimeSlept As Double = tsNext.TotalSeconds - tsStart.TotalSeconds
'wait for Time seconds
[Code] .....

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Aug 20, 2009

Hi. what is the difference of sleep function and pause function (using timer) between a loop.

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Jan 4, 2011

"'I'm having an issue sorting out why my code isnt working. When I "step into" it line by line i can get it all to work exactly how I want, however when I actually run the macro i get an subscript error 9. The code basicly sets a .CSV url to a variable "CurrentURL". The code then launches this url which opens a .csv window called table.csv. I want to copy 2 columns off this window and paste it to another document called "MPT_CAPM_v1", then close table.csv. Here is my code the red line is where I believe I'm running into my error.'This macro opens a URL, copies and pastes the price data into the sheet

[Code]...

I think the error may be caused by the fact it takes about 4-5 seconds to open table.csv in excel, and my line of code is trying to select a window that isnt currently open. After I get the error message, table.csv opens up. I've tried Loops & Sleep functions to try to input a delay, but regardless it seems that table.csv will not open until the end of said loop or delay.

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Sleep Function Visual Basic?

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Something similiar like there exists in: C: sleep(1);

We also tried this code:Declare Sub Sleep Lib "kernel32" (ByVal milliseconds As Long)' pause for 5 seconds
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[Code]...

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Do While Not File.Exists(f)
Thread.Sleep(500)
Loop

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VS 2010 Pause / Delay Code (can't Use Sleep Function)

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I have another problem with my bot.

[Code]...

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I have ...

Private Sub TestTask()
Debug.Write("Running")
For i As Integer = 0 To 60

[code]......

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Dec 13, 2011

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Mar 18, 2011

I just learned some basics of multi threading in VB.net recently as I came across processing a large List of records and inserting them into SQL database one by one.

I have code look like this:

Private Sub btnLoadNow_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLoadNow.Click

Dim autoLoad1 As New Thread(AddressOf AutoLoad)
autoLoad1.Start()

[CODE]...

Itemlists is a global lists i retrieved from database, everything looks fine to me but when i run this program, I found that the threads are inserting one records 9 times into the database(I have 9 threads in total), which makes me think that maybe i need to specifically assign 1/9 of a list to each thread? Is there another way to do it which doesn't require the splitting of the list, if not , how do i split it then assign?

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Jan 6, 2010

2008 Array Processing and Sequential File Processing

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VB 2008 Array Processing And Sequential File Processing

May 19, 2011

Im a college student and this is my first programming class, i am having extremely diffcult time with arrays and sequential file processing. Im not asking for the whole program, just something to get me started and hints along as i progress with it. Please help me get started on my program, its due in 2 days.

Here are the requirements....

1. The program must input any number of individual�s last and first names using two separate textboxes.
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Private Sub Window2_Loaded(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles Window1.Loaded
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[Code]....

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Window Handle Changes Between Events

Aug 1, 2011

I have the below code. When I execute this code, the handle is different between the Load event and the Shown event. I thought the handle was static for an instance of a window. What could cause the handle to change? The only other thing the form is doing is setting itself to invisible and setting the ShowInTaskbar = False in the Activated event.

[Code]...

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so far I have:

Private Declare Function SendMessage Lib "user32.dll" Alias "SendMessageA" (ByVal hWnd As IntPtr, ByVal wMsg As Integer, ByVal wParam As Integer, ByVal lParam As IntPtr) As IntPtr

[Code]......

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My application currently has a boolean flag, that is set to True on textchanged event. So I will only need to check for the boolean value in whatever event is trigger by the red box.

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Apr 28, 2012

This is the code I am working with...

[Code]...

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Jan 27, 2010

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Apr 3, 2009

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I have lost the small window which displays the objects and events of the current tab. How can I get that back?

This is a screenshot. I have lost the highlighted area!

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Oct 15, 2009

I want some event handling functions to only be able to be accessed via raised events and not called from the program.[code]...

Is there a declaration or some other way to accomplish this?

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I am very confuse over a Raise Events example and using delegate as a function pointer: I am clear with this function pointer example program below which creates a generic sort function for sorting integer arrays without changing the main sort function.
' Returns True if need to swap
Delegate Function CompareFunc(ByVal x As Integer, _
ByVal y As Integer) _
As Boolean

Here are two alternative target methods for the delegate - one for an ascending sort and one for a descending sort:
Function SortAscending(ByVal x As Integer, ByVal y As Integer) As Boolean
If y < x Then
SortAscending = True
End If
End Function
Function SortDescending(ByVal x As Integer, _
ByVal y As Integer) As Boolean
[Code] .....

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Public Class Form1
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[Code].....

This code is apllicable for windows but when I run this into Window CE 5.0 in a handhaled scanner/mobile computer it wont run. windows are using "Kernel32" how about in window CE 5.0? The error appeared is " Can't Find pinVoked DLL 'Kernel32'.

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I am using the code below to download an Excel file. Once the Response.End() call runs, I want to close window. However, this isn't happening.

Code I have so far below.
'Write it back to the client
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Response.AddHeader("content-disposition", "attachment; filename=" & filename)
Response.BinaryWrite(pck.GetAsByteArray())
[Code] .....
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When I was coding a program, I was able to find the result of a function in the Immediate Window by using:

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the below is my code:

Imports System.Data.SqlClient
Imports System.data
Imports System.Drawing.Image

[Code]....

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