VS 2010 Unexpected Error On Program Close With A Wait Loop?
Dec 1, 2011
In my MDI Application code I have a form that launches a second form then hides itself until the spawned form closes. It works great unless I choose to close the application while the spawned form is still up.
The following is some example code.
Dim ChildForm as New frmTaskWindow With { .MDIParent = Me, .AddingNew = True }
ChildForm.Show
Me.Hide()
[Code].....
Me.Show() ' error occurs here because my form is already closed by the system. Is there a way to get around this without just an error catcher?
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May 29, 2010
How would I pause an external program (exe), wait 10 minutes then unpause it using VB.NET
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Mar 4, 2011
In a program I'm working on, I want a "Loading..." dialog to close when it can't log in to a site using the username and password provided by the user. Basically, I have the code set up right because the function it is supposed to carry out when that occurs does work, but for some reason it ends up in some really weird stuff happening. In the Loading form, I have it set to do "Form1.Show()" and then "Me.Close()", assuming it would simply show the login form and then close the Loading form. However, when this happens, the Loading form closes, and then for only an instant Form1 shows, and then the Loading form shows and Form1 closes. This happens forever until I stop the debugging, and I can't seem to figure out why. Am I using the wrong method? What exactly does Me.Close() do anyways? All I want to do is close the form and open another
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May 9, 2012
In my program I use WebBrowser control for OAuth. It's located on vk_auth_window form. So in the code I call vk_auth_window.WebBrowser1.Navigate(vkauthurl). If authentication is successful, I silently get token, but if user is not authenticated a form vk_auth_window is showed to them to enter username and password. To check this I catch _DocumentComplete event and check for the right URL. I need no other code being executed until the user finished authentication or closed authentication form. ShowDialog() does the trick, but it somehow hides cursor from username and password fields in WebBrowser control. So I introduced a variable Dim showform as Boolean=True in and set it to False from the _DocumenComplete event and in the main code I use infinite loop.
While showform
System.Threading.Thread.Sleep(100)
Application.DoEvents()
End While
However it makes userinput slow due to thread sleeps. And If i remove them, it loads CPU quite a lot. Is there a better way to wait for form to close? What is it?
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Jan 25, 2010
I have a little log in screen that pops up if a user selects a certain item on my main form. How do I get my code to stop executing til my log in form closes?This is what I am doing so far. Basically i want o execute the code after MyLogin closes.
BMSSplash.MyLogin.Show()
If isLoggedIn Then
BMSSplash.MyBuddy.Show()
Cursor.Current = Cursors.WaitCursor
End If
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Apr 19, 2012
In form I have one button which has functionality to pick up some data from (by mouse click) Parent application.
I have handle for parent application handle, but even if i tried to bring it on top i am not able to do selection because form is modal.
Requirement here is open modeless dialog and wait till it close. other wise it goes further and executes functionality below.
Another option can be open form as modal and at runtime change it to modaless.
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Apr 9, 2009
My end result is that I want to launch another setup project after the first setup project closes. The problem is that since setup.exe is just a wrapper for the msi package.WaitForExit is quitting when the setup.exe is finished and not foo.msi.
Using Process As New System.Diagnostics.Process
Process.StartInfo.FileName = "setup.exe"
Process.StartInfo.WindowStyle = ProcessWindowStyle.Normal
[code].....
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Apr 5, 2010
I have something like this:
For Each Entry In CheckedListBox1.CheckedItems
SheetName = Entry.ToString()
Form2.Show()
Next
but I don't want to continue the loop until Form2 is closed. I tried something like this:
For Each Entry In CheckedListBox1.CheckedItems
SheetName = Entry.ToString()
Form2.Show()
Do
[code]....
But that just froze everything and used up all my CPU.
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Feb 1, 2012
I'm trying to run a batch file via VB and I need to wait for it to complete/exit before progressing. The issue I believe I am having is that when a batch file is executed, it opens cmd.exe and not the batch file.
This is what I am executing with VB
My.Computer.FileSystem.DeleteFile(My.Application.Info.DirectoryPath & "PingCheckmachines.txt")
FileCopy(My.Application.Info.DirectoryPath & "machines.txt", My.Application.Info.DirectoryPath & "PingCheckmachines.txt")
Dim psi As New ProcessStartInfo(My.Application.Info.DirectoryPath & "PingCheckgo.bat")
psi.RedirectStandardError = True
psi.RedirectStandardOutput = True
psi.CreateNoWindow = False .....
The problem I am having is that it will just delete ping.bat before it completes.
How do I go about monitoring the process from the batch file I call. Then once it exits, continue with the script?
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Aug 14, 2009
I'm working on a web browser named Hyvar.NET and i'd like to integrate a form of shutdown detection into it.
Currently, it simply uses a tri-option setting to decide how it opens - like this
If My.Settings.LoadLastOnStart = True Then
frm.wbTab.Navigate(My.Settings.LastOpenedPage.ToString)
ElseIf My.Settings.HomeOnStart = True Then
[Code]....
Each variable is appropriately named for its job as you can see.
However, i want to change this to react to correct and incorrect shutdowns - unexpected and user instigated ones for example. I.E: if the settings variable for the detection contained 0x000000, it could indicate a clean exit and continue as normal with a new session, but 0x000001 would indicate an unclean shutdown and present the user with an option of reopening the last session or continueing as normal, like in IE 7/8
Im 100% sure this will require a windows API call
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Aug 20, 2009
when i made Package and deployment in VB6 error message apear
Run Time error 80010108 unexpected error
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Jul 13, 2009
I've made a project with serveral forms and instances of classes.The program works fine until the last form close.2 messages were shown:1. The exception unknown software exception(0x0eedfade) occured in the application at location (?????????)2. Regular dialogue "Runtime error 217 at (????????)
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Sep 29, 2011
I have a VB2005 application where the PC waits for data packages from a target. Part of the data package contains what to do next. I am using SerialPort1_DataReceived thread to pickup this data package and "looking" at and extracting the "next step" data from the package then go do it. The issue I have is I must exit the SerialPort1_DataReceived thread to do this and not do everything inside the SerialPort1_DataReceived interrupt routine. In C there is something like this:
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Nov 29, 2009
In duplicated code using Lockbits in VB to obtain the address of Bitmap.Scan0, the first is OK, in all applications, but the second NEVER is. What is the explanation please? Surely both StartAddrA and StartAddrB should be valid pointers to Bitmap.Scan0 for calls to valid, functional ASM code in the functional DLL. The error is, it seems, in the VB Lockbits process. Using VS2010 Beta 2 and XP.
[Code]...
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Mar 15, 2012
How to make a loop wait until a button is click?
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Jul 10, 2009
In this line of code ".lim" is underlined and the error is that an End Of statement is expected,i wrote End Of at the end of teh code and the error did not dissappear.
Dim FileName As String = lsp ".lim" 'string containing the file name.
If you're not living on the edge, you're taking up too much room
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Nov 15, 2011
I have the following code that I'm trying to retrieve the HTML document. Not sure why it wouldn't work. Here's what I captured from Live HTTP Headers:
[Code]...
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Feb 4, 2009
Ok so i have a date time picker that holds a date that was entered by a user. My program works fine when ran on a computer using English(US) regional settings, but when i take it to a computer running any other regional settings, I.E. English(UK), which is the 2nd most common regional settings that will find its way to this program, I recieve an error because the Date format is backwards. What i'm curious about is how can i grab the system Regional Date format in order to rearrange my Date to fix its context?
I know that since the date is stored as a string i'm going to do something along the lines of this to break it apart:
Dim temp()
temp = Split(inputarray(7), "/")
inputarray(7) = temp(1) & "/" & temp(0) & "/" & temp(2)
i am almost 100% sure the above code will take a date in MM/DD/YYYY format and rearrange it to DD/MM/YYYY format.
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Jan 21, 2008
Receiving following error:Error occured: An unexpected error occurred with the method.
Stack Trace: at MSProject.TimeScaleValue.get_Value()
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Aug 19, 2010
We have an application (Vb6) that gets installed at all of our client sites and they often (Vista/Windows 7) run into a the error message Unexpected error, quiting after a install on a new machine. The problem comes about when the UAC is on and the application is trying to create registry entries in areas it doesnt have access to because the application is running as a standard user. If the user runs the application as an admin the first time, everything sets up and life if good.
My question is, what is the most elegant way to setup those registry keys without forcing the user to run as an admin the first time? We could force them to run the applicaiton as an admin using a manifest file, but I dont want them to have to run as an
admin every time, just the first time.
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Feb 22, 2011
I am trying to open/read excel (2003) file in vb.net but I m keep getting "Unexpected error from external database driver (22)". I have also tried SSIS but same error pops up. I have used following connection strings but none of them seem to be working:
conn.ConnectionString = "Driver={Microsoft Excel Driver (*.xls)};" & _
"Driverid=790;" & _
"Dbq=C:Report_1.xls;" & _
"DefaultDir=C:;"
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Jun 16, 2009
This code runs find in Excel 2000 but not in 2007. I get the error, "Unexpected error has occurred." message on the".Refresh BackgroundQuery:=True" line.
Set AllStockDataWorksheet = Workbooks(1).Worksheets(2)
Set AllStockDataResults = AllStockDataWorksheet.QueryTables _
.Add(Connection:="URL;http://finance.yahoo.com/d/quotes.csv?s=" & Left(SymbolString, Len(SymbolString) - 1) & "&f=l1va2&e=.csv", _
[code]...
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Jul 16, 2010
How do I Close a Form and then open a new one straight away? Im trying to make a Login for a Program, but I want the Login Box to open first, then disappear when the credentials are correct and a new Form to load.
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Mar 17, 2011
I am reading a large number of XML files and do not want my program to bomb on exceptions. I am making great strides in reporting the errors, skipping the offending files and continuing the import process. However I am having problems with XmlExceptions. I get the following XmlException on the While textReader.Read() line of my program:
Quote:
XmlException was unhandled
Unexpected end of file has occurred. The following elements are not closed:
my:PicInsert, my:PictureGroup, my:myFields. Line 153, position 430817.
I am finding some of the reasons why, missing tags etc, but those aren't really my concern. I just want to report the issue and continue. I am thinking about some kind of check for a valid xml file but fear that that might not catch it all. For example I had a image tag in one of the files that was missing an alt="" attribute and I am not sure if that would invalidate the entire XML file.What would be the best way to trap and deal with the exception with out causing interuption to the program?
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Dec 6, 2011
OS: Win7 64bits Software Tools:Package and Deployment Wizard (for VB6.0)The vbp file is working in XP. Installed the VB6.0 in Win7 64bits, it can make the exe file.However, the setup file can be made using the 'Package and Deployment Wizard' Tool.
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Oct 22, 2009
The following syntax is just fine ReadOnly
[Code]...
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Jun 23, 2011
I am trying to play some WAVs within Media player and am confused at the order my code performs tasks in.
I need to use Windows Media player as my WAVs are 8 channel and just playing the WAV without using media player doesn't seem to support this.
I have a form with a button and a media player component on it
Her's my code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
AxWindowsMediaPlayer1.URL = ("C:ASOwl1.Wav")
[Code]....
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Jan 6, 2012
End A statement which as far as i know doesn't close you program properly and hides errors. Right now i'm being forced to use end because i don't know how else to close my program properly. I'm not sure where my problem is but some of you should be able to fix it. I'm trying to make a game using directx with a game loop. This code is the skeleton of what i'm making.
Public Class Form1
Private ProgRunning As Boolean = True
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Me.Load
Me.Show() 'Make the form appear
Me.Focus() 'Give the form focus
[CODE]...
This code runs alright because end is being used but if you rem end out the error which it's hiding comes out. The error is "Object reference not set to an instance of an object." I'm not totally sure but i'm guessing that the error is refering to the form.
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Nov 18, 2011
I am Matthew and I'm extremely new to coding and any sort of scripting language; yet I am highly interested in programming and want to learn lots about this subject. So to start myself off I am trying to create some applications which I could use in day-to-day life to just basically make life easier.So the first program I am trying to make I am already confused and not sure what the heck I have to do in order to get it functioning, I've looked on lots of videos on you tube for tutorials and they have all done a great job but some videos just don't answer my questions.When I click a button and "Form2.Show()" appears, how can I make it so that when I type text in a list box in form2, it doesn't disappear when I close it? Then once I have known done that, how can I make it so I can choose a random string of text in the list box on form2 to show up on the click of a button on form1? Then a final question is, How do I prevent fields being reset in form1 & form2 on program close? Also, is it ok for me to make a thread asking 1 simple question? or do I have to ask a handful each time to save threads or something?
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May 17, 2010
I'd like to make a simple program where my form consists of a textbox and a button. Here's the ide in a nutshell:in form1_load I invoke the sub:
private Sub LoopingLesson()
dim i as integer=1
while true
[code]....
what I want is when i hits certain value, like let's just say i is divisible by 365, then the 'while' looping will stop, and a message box saying "target reached" appear. then after I click button1, the looping will resume until it reaches the next number divisible by 365, and so on.
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