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Hi,
I am using VB 2008 Express Edition and a beginner in the programming just learning. I own a Internet Cafe so i have created a program for the my cafe. I have a question that inseded of writing down the time in the register just click the start button for the speacifed computer and the timer should run counting and when i stop the stop button which are one button only the text must change near to the button the timer show from 00:00:00 to 01:34:21 hh:mm:ss.
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So what is your question? How to use timers? Post your code and we will try to help.
Bob
Ashfield Consultants Ltd
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Public Class System1
Dim timerstat As Boolean = False
Dim count As TimeSpan
Dim CHours As Boolean
Dim CMins As Boolean
Dim CSecs As Boolean
Dim CMSecs As Boolean
Private Sub btnSys1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSys1.Click
If timerstat = False Then
btnSys1.Text = "Stop"
Timer1.Start()
timerstat = True
ElseIf timerstat = True Then
btnSys1.Text = "Start"
Timer1.Stop()
timerstat = False
End If
End Sub
Private Sub Timer1_Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles Timer1.Tick
count = Timer1
If CSecs >= 10 Then
CMins = CMins + 1
CSecs = 0
Else
CSecs = CSecs + 1
End If
If CMins >= 60 Then
CHours = CHours + 1
CMins = 0
End If
If CHours < 10 Then CHours = "0"
If CMins < 10 Then CMins = "0"
If CSecs < 10 Then CSecs = "0"
lblTimer1.Text = count
End Sub
End Class
this what i gave the code to my program. The timer must count up as in this format hh:mm:ss as 00:34:05, 00:36:10 like this
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And what does the code give you - apart from (I suspect) a lot of errors?
For example you cannot do arithmetic operations on boolean data types, they are true/false
One bit that will help is the string.format function
lblTimer.Text = string.format("{0}:{1}:{2}",hours,mins,secs)
Rethink your code, make sure it compiles and runs, then I may be able to help you, but I am not going to write it all for you.
Bob
Ashfield Consultants Ltd
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Not and error message when i build. I get the error in the form in the lblTimer its showing false:false:false like that
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Thats because your datatypes are boolean. Try using a numeric datatype
Bob
Ashfield Consultants Ltd
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hi friends,
I am trying to fill a string array but i am getting an error as "Object Reference not set to an instance of an object"
Here is my sample code
dim str() as string
dim s as string
For i = 1 To 5
s = SomeMethod()
str(i) = s
Next
Here SomeMethod() is returning a string and i want to assign it to string array str(). Why i am getting above error? What i need to do?
Can anyone help me please.
Thanks,
Nagendra
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nagendrathecoder wrote: dim str() as string
You are missing something.
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You need to set the size of the array when you define it:
dim Str(5) as string
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Thanks to both of u, now i got it correct. That was a silly mistake. 
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Hi,
I m using progressbar in my project to show how much process has completed but i wanna know how can i calculate the time which will consume in the process completion??
Hope u r getting wht i mean
Thanks
The Great Pleasure In Doing That Things That Other People Say U Can't By Doing This U Can Shut Their Mouth
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~V~ wrote: how can i calculate the time which will consume in the process completion??
Depends on what you're doing. When I'm making a cup of coffee about 5 minutes (its a slow kettle)
Bob
Ashfield Consultants Ltd
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Actually i m using process in For loop
The Great Pleasure In Doing That Things That Other People Say U Can't By Doing This U Can Shut Their Mouth
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Unless you know the depth of the for loop you cannot know the progress to completion. This why M$ has moved from the ever repeating progress bar that either repeats or sticks on 99% to the circular animated graphic.
Never underestimate the power of human stupidity
RAH
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Thanks 4 reply
I m retriving data in dataset n after modifing it save back to new table
in this process i m using for loop n i wanna know how much time it will consume??
The Great Pleasure In Doing That Things That Other People Say U Can't By Doing This U Can Shut Their Mouth
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~V~ wrote: how much time it will consume
Why - you can use the table.rows to set the max of the progressbar and increment by 1 each record that is processed.
As for time estimates there are way too many factors you will need to know to do the estimate. However a little thinking may lead you to something like this:
Guest the first number based on row count and estimated time of processing (you have already tested this during development)
check the duration of the first loop
multiply duration by rowcount
refine the estimate with each record processed till completed.
Waste of effort in my opinion but hey it's your time.
Never underestimate the power of human stupidity
RAH
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Thanks a lot, its not time wasting its reqrirement of my project
The Great Pleasure In Doing That Things That Other People Say U Can't By Doing This U Can Shut Their Mouth
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Well, if a simple count as Mycroft suggests isn't good enough you are going to have a problem - different processors, memory etc etc. You could time the 1st iteration and use that combined with the number of records to give a rough approximation I expect.
Bob
Ashfield Consultants Ltd
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Thanks to all who replied my question n thier suggestions 
The Great Pleasure In Doing That Things That Other People Say U Can't By Doing This U Can Shut Their Mouth
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Hello every one..
I will re-describe my objective...
I have a application working over a network and having a centralized DB server..
For new registration we were generating a ID by combining YYYYMM(a number sequence). The sequence is stored in a table.
Now we have to modify the application so that the registration can be done at more then one place.
I read the Number and add 1 to it, insert the registration info in register table and then update the number.
Now my issue is when we will start doing registration at two places there are chances that both the system will access the same number and there can be c conflict...
I just knew that this type of things are possible by table locking some kept table locking in the subject..
Can any one plz help me out with what exactly i need to do and may be how also..
Regards
Nishkarsh
modified on Tuesday, May 27, 2008 2:56 AM
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And you will still get the same answer: Transaction. Transaction is basically a "managed" row locking so why "unmanagedly" locking the whole table and potentially causing nobody to be able to use the table?
Also throw aways the table locking idea that exist in the file-database era (Access etc).
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darkelv wrote: Transaction
I have to say, there's no better way, it's what they were made for - controlling update sequences amongst other things.
Bob
Ashfield Consultants Ltd
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Listen to darklev - use a transaction in your stored procs to insert to the various table.
Never underestimate the power of human stupidity
RAH
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Hi guys
I am getting a soap exception in creation of a site in wss:
at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
at Testx.AdminSer.Admin.CreateSite(String Url, String Title, String Description, Int32 Lcid, String WebTemplate, String OwnerLogin, String OwnerName, String OwnerEmail, String PortalUrl, String PortalName) in C:\Documents and Settings\mohannad.gh\Desktop\Testx\Testx\Web References\AdminSer\Reference.vb:line 95
at Testx.Form1.CreateSite_Click(Object sender, EventArgs e) in C:\Documents and Settings\mohannad.gh\Desktop\Testx\Testx\Form1.vb:line 1342
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(ApplicationContext context)
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine)
at Testx.My.MyApplication.Main(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81
at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
this is the following code.
Dim siteURL As String = "http://servername:4000/sitename"
Dim siteTitle As String = "TestSite"
Dim sitedes As String = "Site for testing"
Dim lcid As Integer = 1033
Dim SiteTemp As String = "STS#2"
Dim adminService As New AdminSer.Admin()
adminService.Credentials = New Net.NetworkCredential("admin", "pass", "workgroup")
adminService.CreateSite(siteURL, siteTitle, sitedes, lcid, SiteTemp, "workgroup\admin", "adminName", "", "", "")
Not sure what is happening, any inner exception is nothing.
Any pointer is appreciated.
Thanks
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Does anyone know how I can loop through a collection and start a thread to process  each item in the collection, but I want to limit the number of threads running at a time to the number of cores on a PC.
Regards
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