Why Timer Wont Successfully Execute Sub
Feb 29, 2012
The problem is when I do through through a push button, it works fine, the file is captured, processed and clicking the button calls StartRecord() to start a new recording which enables the timer to look for the silent period but does not rely on the timer to restart the recording after processing - no issues I can do this over and over without a problem.Having it automated through a timer control it fails, after the first recording the timer should restart the recording by calling StartRecord() again but I get an error "The specified device handle is invalid". I thought maybe it was all happening too fast so I tried sleeping in between the restart for up to a full minute with no change, I removed the ProcessSpeech() sub routine from the timer and just had it record, and sleep for a minute then restart and still fail with same error. I can do the manual button start much faster than a minute with no issue.
Private Sub StartRecord()
Dim fileName As String = "c: est.wav"
Dim stream As Stream = Nothing
[code]....
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Jan 9, 2012
I have a ajax Timer control. It adds "+" to the text value of a label. This timer should work only five times with an interval of "1000" - i.e, only five "+" should be available. After that, the lblPostbackType Should be updated with the count. How do I achieve it?
public partial class _Default : System.Web.UI.Page
{
static int partialPostBackCount = 0;
[Code].....
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Jan 23, 2012
Currently I'm creating a task that runs a hardware i/o loop for the duration of my program.i.e. it's a task that's created at the program's start and runs a loop that is only broken at the programs termination. Each loop cycle communicates via ethernet to hardware.depending on time outs each cycle takes 30-300 msec)I've noticed that if the loop runs with out any break that the program really slows down... to counter act that I placed a thread.sleep(x) in the loop
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Jun 8, 2011
how to make the timer automatic execute a code weekly?The timer will automatic generate a report for every monday(8am),how 2 do it?
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Jan 27, 2012
What i want to happen is for the dictionary keys and items to be overwritten each time it is executed, as the data needs to be up to date.
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Jun 9, 2011
i wan set a timer in my program to execute a certain function daily,weekly or monthly(which will decide by the user)!User also can execute manually the certain function at anytime!any1 can teach me how 2 do these 2 function in my program?
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May 6, 2009
I wrote a VB.NET Windows Service, which works fine. I have only one issue with it. I want the service to execute on the half hour and top of the hour marks (e.g. 9:00, 9:30, 10:00, 10:30, 11:00, etc etc etc). I am using the following code:
Protected Overrides Sub OnStart(ByVal args() As String)
' Add code here to start your service. This method should set things
' in motion so your service can do its work.
[CODE]...
This code works, however, if the service starts at, say, 10:15, then it executes at 10:15, 10:45, 11:15, 11:45. How do I make it so it always executes on the 30 minute and top of the hour marks?
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Feb 8, 2010
ive tried everything:
Me.Close()
Me.Dispose(True)
Application.Exit()
Application.ExitThread()
MyBase.Close()
But the program still executes.
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Jun 8, 2009
A problem developed in a program after some changes were performed. It runs the previously good program. Is it possible to get back the good program's code?
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Jul 15, 2011
I can successfully use the command-line arguments by the code below
[Code]...
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Dec 8, 2011
creating an application using VB 2010 Express. i found data I entered into table were not saved (after I clicked"Save" button)successfully into Microsoft access file which I had added successfully as datasource.These are the codes:
Private
Sub
SaveToolStripButton_Click(ByVal
[code]....
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Feb 8, 2012
I am uploading an excel data to display in a datagridview and when i click on an update button it updates the database.but I want a code that will look up a column and get a value then display in a message box like "Data uploaded successfully for @ChurchID"where @Churchid is a column in the excel sheet but the id is the same but unique for every excel sheet upload If the upload is not successfull then it should give a failed message for that @churchID
Code
Dim i As Integer
For i = 0 To (Me.DataGridView1.RowCount - 1) - 1
Dim Connection As New OleDb.OleDbConnection("Provider=Microsoft.ace.oledb.12.0;data source=C:Documents and Settingsmichael.marteyMy DocumentsVisual Studio 2005ProjectsmyRegistermyRegisterinDebugChurchesRegister.mdb")
[code]....
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Oct 19, 2009
I made an icon for my program and tried to implement it.Funniest thing though, I get a message with the error icon saying the operation completed successfully.But the icon doesn't change, nor is it my icon drop down box when I click the arrow. Ergo, it didn't complete successfully....I am using ASP.NET 2.0 and have read some about this error but I don't see any fixes I can do, aside from what I've tried already.
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Feb 28, 2010
How can i transfer a form successfully from one project to another without messing anything up ?
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Feb 25, 2010
[Code]...
how can i get this code to return all values instead of just the first value ?
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Jan 18, 2012
I have the following VB code.Dim cmd As New MySqlCommand("SELECT code FROM decoder WHERE ann_id = @aid", conn) cmd.Parameters.AddWithValue("@aid", 1)Dim reader As MySqlDataReader = cmd.ExecuteReader()
The reader.Read() then gives me nothing, however, if I replace the code by.Dim cmd As New MySqlCommand("SELECT code FROM decoder WHERE ann_id = 1", conn) Dim reader As MySqlDataReader = cmd.ExecuteReader() reader.Read() gives the correct result. Tried using Add instead, doesn't help. What am I missing here?
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Nov 11, 2011
I have created setup file and installed successfully. while removing the Application from my system by using Add/Remove programs I got the Error as below,"Error 1001. Exception occured while the installation.System.Io.filenotFoundException.could not load the file of assembly file or one of its dependencies. the system cannot find the file specified."..After that i got one more Error box that says "fatal Error during installation"..By the above errors i could not uninstall the Application from my system.How can i solve this error? and is there any other way to uninstall the application from my Machine?
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Jul 30, 2010
How would I delete only the successful inserted rows for insert and then move the non successful rows up and allow the user to correct the data and get it ready for an insert. If I dont delete the successful rows then I will have multiple inserts of the same dataRow and we dont want that! And if I don't move the data up then it will have blank rows uptop and will end the try and not insert the corrected data. You can better see what logic I am trying to perform at the bottom of my code, right after I insert into the database.
Here is my code.
Private Sub btnLaserGenerateTicket_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLaserGenerateTicket.Click
'Function declarations
'Object declarations
Dim localOutputServer As SQLServer = Nothing
'Variable declarations (Form)
[Code] .....
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Nov 19, 2008
Since it will be run by the user I don't want the user to have to do anything but send the IT department the log file it creates.
What I want to do is see if a folder on the network can be opened successfully. I do not want to ping it, but actually open it and see if it loads. I can do this for a website by retrieving the http status code, but I can't find any references to something similar for explorer.exe. Here is a basic flowchart of this part of the program:
ping server --yes--> access \server_namefolder
--no--> access \server_IPfolder
--no--> Authentication Issue
--yes--> DNS Issue
Note also that just checking authentication won't work because it could also be a DNS problem. I guess I could check them both, but I would rather do it this way if possible (and I don't know how to go about checking either one)
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Aug 9, 2008
im using VS2005. and the built-in sql express.when i run my code in debug mode, i can see that the required number of rows are being affected correctly.but when i actually go and see in the table data, the data has not been inserted/updated.i am using sqlcommand. executeNonQuery() to insert/update data.also, i must add that both executeScalar and executeReader are working perfectly.what could be the possible reason for executeNonQuery although showing the number of rows affected but does not actually do it when seen in the table data?int x = cmd.ExecuteScalar(); // X SHOWS 2 OR 3 depending on the number of rows affected.
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May 17, 2012
i just want to ask about on how to check if i am successfully connected in ms sql 2008 in vb.net silverlight.
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Jul 13, 2011
I'm trying to create an application that sends an email to an smtp-server. The server is not set fixed, but will be looked up according to the domainpart of the email-address where the email should be sent to.
[Code]...
It would be quite useful, to know if the message was accepted by the mailserver and the message was successfully sent. What I am able so far is, that I can get the SMTP-Server error code (if there was an error (StatusCode 5xx) by using the System.Net.Mail.SMTPClient Object and its SendAsync Function. There, if there was an error, I get an Exception-Object in the Callback-Event of the SMTPClient
I'm well aware that not every mailserver will tell me if the mailaccount truly exists and then reject my mail with an errorcode but instead just accept the message and then delete it. Therefore I would be grateful for another Method to check if the mail was sent (note: not read, that would be the read confirmation)
The final purpose would be: Try to send an email to a recipient using it's domains mailserver and if it fails, proceed according to the errorcode (user does not exist -> abort / mailserver did not respond -> use another mailserver if available).
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May 27, 2009
I am trying to successfully multithread a piece of software I have been working on. I have an array of threads 'gen' already working, calling to a method taking a single integer as a parameter (done via typecasting).Now in this thread, when the function gets processed (for each thread a roughly 500 iteration while loop) the index seems to be getting mixed up. As far as I can tell, my threads are messing with eachother and warping values. Now this is happening in locally declared variables inside this function, not global variables.It may be useful to know that I am using a WebRequest via a call to another method. Don't know if that makes a difference or not.
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Nov 14, 2011
I have found this amazing control that does exactly what I need, only problem, its in C#. Does anyone know of a VB version of this code? I've tried using converters, but all of them have failed in successfully converting the project. Maybe one of you guys knows how to convert it?
Anyway, here is the control: [URL]
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Nov 11, 2009
I cannot seem to successfully send the Enter key to a webbrowser control using .net. I can succesfully send postmessage Tab key and it tabs through the links and controls, but it does not click on the link when I send Enter key.The website I am opening has frames, and due to the cross frame scripting policies microsoft forced into the IE control , I cannot retrieve the links from the IFRAMES on the page. So my alternative thinking is to use Tab keys to get to the link and then press Enter.
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Aug 13, 2009
When I try to install controlpad [URL] I receive this error: "Microsoft ActiveX Control Pad Setup was not completed successfully"?
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Sep 24, 2009
I just want to make sure if the UDP sent was received successfully, what could be some methods to do such? Its just for chatting on a local network.
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Aug 19, 2010
I have an application, for sending SMS to mobile phones, using a GSM modem and AT commands. It works perfectly, except in one point. If the modem have some problem, for example doesn't have network, or even doesn't have a SIM card, I dont know if the message was sent or not. How can I test if the message was sucefully sent?
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Aug 2, 2010
What I need to do to make this code work for hours as well?[code]...
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Jan 15, 2009
I need an accurate timer to interface a Windows application to a piece of lab equipment.I used System.Timers.Timer() to create a timer that ticks every 10 msec, but this clock runs slow. For example 1000 ticks with an interval of 10 msec should take 10 wall-clock seconds, but it actually takes more like 20 wall-clock sec (on my PC). I am guessing this is because System.Timers.Timer() is an interval timer that is reset every time it elapses. Since it will always take some time between when the timer elapses and when it is reset (to another 10msec) the clock will run slow. This probably fine if the interval is large (seconds or minutes) but unacceptable for very short intervals.Is there a function on Windows that will trigger a procedure every time the system clock crosses a 10 msec (or whatever) boundary?
UPDATE: System.Timers.Timer() is extremely inaccurate for small intervals.I wrote a simple program that counted 10 seconds several ways:
Interval=1, Count=10000, Run time = 160 sec, msec per interval=16
Interval=10, Count=1000, Run time = 16 sec, msec per interval=15
Interval=100, Count=100, Run time = 11 sec, msec per interval=110
Interval=1000, Count=10, Run time = 10 sec, msec per interval=1000
It seems like System.Timers.Timer() cannot tick faster that about 15 msec, regardless of the interval setting.Note that none of these tests seemed to use any measurable CPU time, so the limit is not the CPU, just a .net limitation (bug?)For now I think I can live with an inaccurate timer that triggers a routine every 15 msec or so and the routine gets an accurate system time. Kinda strange, but...I also found a shareware product ZylTimer.NET that claims to be a much more accurate .net timer (resolution of 1-2 msec). This may be what I need. If there is one product there are likely others.
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