Wait 5 seconds before continuing code VB net

Question

I have a code and I want it to wait somewhere in the middle before going forward  After the WebBrowser1 Document Window DomWindow execscript  checkPasswordConfirm      JavaScript   I want it to wait  5 seconds and then do the rest of the code       WebBrowser1 Document Window DomWindow execscript  checkPasswordConfirm      JavaScript        Dim allelements As HtmlElementCollection   WebBrowser1 Document All     For Each webpageelement As HtmlElement In allelements         If webpageelement InnerText    Sign Up  Then             webpageelement InvokeMember  click           End If     Next

User · Answer

The problem with Threading Thread SLeep 2000  is that it executes first in my VB Net program  This  Imports VB   Microsoft VisualBasic  Public Sub wait ByVal seconds As Single      Static start As Single     start   VB Timer       Do While VB Timer    lt  start   seconds         System Windows Forms Application DoEvents       Loop End Sub   worked flawlessly

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This question is old but here is another answer because it is useful fo others  thread sleep is not a good method for waiting  because usually it freezes the software until finishing its time  this function is better     Imports VB   Microsoft VisualBasic     Public Sub wait ByVal seconds As Single       Static start As Single      start   VB Timer        Do While VB Timer    lt  start   seconds        System Windows Forms Application DoEvents        Loop    End Sub  The above function waits for a specific time without freezing the software  however increases the CPU usage  This function not only doesn t freeze the software  but also doesn t increase the CPU usage     Private Sub wait ByVal seconds As Integer       For i As Integer   0 To seconds   100        System Threading Thread Sleep 10         Application DoEvents        Next    End Sub

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Imports VB   Microsoft VisualBasic  Public Sub wait ByVal seconds As Single      Static start As Single     start   VB Timer       Do While VB Timer    lt  start   seconds         System Windows Forms Application DoEvents       Loop End Sub    20  high cpu usage   no lag  Private Sub wait ByVal seconds As Integer      For i As Integer   0 To seconds   100         System Threading Thread Sleep 10          Application DoEvents       Next End Sub    0 1 cpu usage   high lag

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I ve had better results by checking the browsers readystate before continuing to the next step  This will do nothing until the browser is has a  complete  readystate  Do While WebBrowser1 ReadyState  lt  gt  4     put anything here   Loop

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Make a timer  that activates whatever code you want to when it ticks  Make sure the first line in the timer s code is   timer enabled   false   Replace timer with whatever you named your timer   Then use this in your code      WebBrowser1 Document Window DomWindow execscript  checkPasswordConfirm      JavaScript   timer enabled   true Dim allelements As HtmlElementCollection   WebBrowser1 Document All For Each webpageelement As HtmlElement In allelements     If webpageelement InnerText    Sign Up  Then         webpageelement InvokeMember  click       End If Next

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Static tStart As Single  tEnd As Single  myInterval As Integer myInterval   5   seconds tStart   VB Timer   tEnd   myInterval   VB Timer   Do While tEnd  gt  tStart     Application DoEvents       tStart   VB Timer   Loop

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Another way is to use System Threading ManualResetEvent dim SecondsToWait as integer   5 Dim Waiter As New ManualResetEvent False  Waiter WaitOne SecondsToWait   1000   to get it into milliseconds

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The suggested Code is flawed   Imports VB   Microsoft VisualBasic  Public Sub wait ByVal seconds As Single      Static start As Single     start   VB Timer       Do While VB Timer    lt  start   seconds         System Windows Forms Application DoEvents       Loop End Sub   VB Timer   returns the seconds since midnight  If this is called just before midnight the break will be nearly a full day  I would suggest the following   Private Sub Wait ByVal Seconds As Double  Optional ByRef BreakCondition As Boolean   False      Dim l WaitUntil As Date     l WaitUntil   Now AddSeconds Seconds      Do Until Now  gt  l WaitUntil         If BreakCondition Then Exit Do         DoEvents       Loop End Sub   BreakCondition can be set to true when the waitloop should be cancelled as DoEvents is called this can be done from outside the loop

User · Answer

VB net 4 0 framework  Code     Threading Thread Sleep 5000   The integer is in miliseconds   1 sec   1000 miliseconds   I did test it and it works

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In web application a timer will be the best approach  Just fyi  in desktop application I use this instead  inside an async method       Await Task Run Sub       System Threading Thread Sleep 5000  End Sub       It work for me  importantly it doesn t freeze entire screen  But again this is on desktop  i try in web application it does freeze

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You ll need to use System Threading Thread Sleep number of milliseconds    WebBrowser1 Document Window DomWindow execscript  checkPasswordConfirm      JavaScript    Threading Thread Sleep 500    500 milliseconds   0 5 seconds  Dim allelements As HtmlElementCollection   WebBrowser1 Document All For Each webpageelement As HtmlElement In allelements     If webpageelement InnerText    Sign Up  Then         webpageelement InvokeMember  click       End If Next

[vb.net] Wait .5 seconds before continuing code VB.net

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