I have created a UserControl and I'm using a simple app to test it. However, when my code in the control throws an error, such as:
If ColumnIndex < 0 Then
Throw New System.IndexOutOfRangeException("ColumnIndex cannot be less than zero.")
Else
the debugger opens the module of the UserControl in the IDE of the testing application and highlights the code above, instead of highlighting the call made by the testing application itself, e.g. LG.Add(-1, ...).How do I make the exception propagate up the call stack?
I have my .net app running on my home machine, and at one point it threw an exception.Problem is, Windows doesn't tell me what the exception is, just says that it stopped responding and closed it.I want to find the exception and stack trace so I can debug it, since I can't to reproduce the problem inside visual studio.The machine is running Windows 7 x64. I found in the event viewer some minor information:
Problem signature: P1: server info.exe P2: 1.4.0.0
[code].....
So based on that I can see there was a null reference. I remember way back when I was on XP, when the application crashed it would show the whole exception stack. Can I find that information somewhere?
If I have an existing exception object (I'm not in a catch block, I just happen to have been given an exception object), is there any way (re)throw it while preserving it's stack trace?
The context for asking is that I'm writing a RunWorkerCompleted handler. If an error happened while running the background task, then this will have shown up in the Error property of the RunWorkerCompletedEventArgs. To keep the code simple I want to use the same error handling code to trap this, or any error that happens later during the handler. That means I need code like this:
Private Sub OnDone(ByVal sender As Object, ByVal e As RunWorkerCompletedEventArgs)
[Code]...
I don't think that using an InnerException here (ie. saying something like Throw new Exception(ex)) will work because then I have the problem that my Catch block has no way of knowing whether the exception it's supposed to be handling is the outer one or an inner one. StackOverflow seems to have various similar questions, but I've not found anything that describes this particular situation.
i have an error when im using a function in dll. i declare this( "Private Declare Function SetChannel Lib "StreamReader.dll" (ByVal freq As Long, ByVal smyb As Long, ByVal pol As Long, ByVal fec As Long, ByVal lof1 As Long, ByVal lof2 As Long, ByVal lofsw As Long) As Boolean") [Code]
this is that error"A call to PInvoke function 'skynet!WindowsApplication1.Form1::SetChannel' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.".
I would like to catch any exceptions from any method in a class so that I may record class specific data to the exception for logging before it is passed up the stack. I know that I can put a try-catch in every method of the class, but there are many methods and It seems there should be a more efficient way. Example of what I am currently doing:
I have created a webcam application in vb2010, when I run the app I get a run time error, please see below PInvokeStackImbalance was detected Message: A call to PInvoke function 'WebCam!WindowsApplication1.WebCamMainForm::SendMessage' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.
it is coming up on this block of code'This sub will open the preview window
Private Sub OpenPrewiewWindow() Dim iHeight As Integer = WebCamPictureBox.Height Dim iWidth As Integer = WebCamPictureBox.Width
I have just a form in my VB.Net project and even when I try debugging that - there is nothing going on besides the form being loaded - I get the error: No symbols are loaded for any call stack frame. The source code cannot be displayed.
I want to build a service that "listens" for data coming in from various ports which then moves the data to the main application.To manage the settings for these services, I want to create some sort of custom management console to change the settings, start/stop the service and view the incoming data.Since you can't test the service in debug mode, would you suggest building all the logic in a win form app, making sure it works before you move the logic to a service project?Secondly, how can the incoming data being read from the service be propagated to the management console application for users to "test" and view the data?
I had a self-hosted win service WCF installed and running at one point.Naturally, I had to make some changes. So I changed the base address back to my local workstation and made the changes. It worked fine.Now it's time to redistribute and... Well... It keeps hosing and I can't figure it out.From the app.config file:
I have a WCF self-hosted as a Windows Service.When I start the service (under the NETWORK_SERVICE account), I can consume the service from my ASP.NET application on a different server.However, the business rules have changed. Now I need to run the service under my own account. I am able to stop the service, and start it again under my account. No problem there.Until I try to consume the service from my ASP.NET application on the other service. I get:
I am wondering if anyone has any idea how to make the controls stack and fill up the available space left by a control if the control is hidden or removed from the UltraGridBagLayoutPanel.
If I hide [Textbox 3] as of now, it will disperse the space left equally and pad the remaining text boxes with the space. However, I would like it to do this...
[Textbox 1] [Textbox 2] [Textbox 4] [Textbox 5]
Where all the text boxes will move up and [Textbox 4] will completely consume the space left by [Textbox 3].
It is possible to catch an exception and throw a new exception which wraps the first exception as an inner exception: [URL] Also, if I call a function and it throws a certain error, but I catch it, will the calling code's catch handler execute? If so, and it is of a higher exception type, is this not wrapping the exception? eg I can throw exception ex of type IndexOutOfRange, log it but rethrow, catch a higher up exception and do something, or I can throw a new exception and wrap an inner exception like:
i got an error when i simulate the thing. To write in a file any "billet" generate the error is : Invalid CastException was unhandled: The conversion of the chain "[" in 'Double' was invalidAlso, i don't know how to make a series of random number between 1 to 49 for each number of a Billet object
Here's my code Public Class Billet Dim _num1, _num2, _num3, _num4, _num5, _num6 As Integer
I need to make an asynchronous call to a method which for the sake of simplicity counts from 1 to 100. If an exception is thrown during the methods counting process, lets say at 50 I need to stop the methods execution, dispose of a few objects and restart it at 51 but have no idea how to go about it.I basically need to raise an event from the method to the main thread and restart the asynchrounous method.
So my problem is that i am trying to figue out if a number is prime based on the input The problem is some error keep araising everytime i use it no matter what I include here's the out put:It is obvisouly asking me to choose which square but I just want the regualar square root and I don't know how to insert it,cpp(7) : error C2668: 'sqrt' : ambiguous call to overloaded function
1> c:program filesmicrosoft visual studio 9.0vcincludemath.h(581): could be 'long double sqrt(long double)' 1> c:program filesmicrosoft visual studio 9.0vcincludemath.h(533): or 'float sqrt(float)'
I use BindingNavigator1 that has ADD ROW / DELETE ROW buttons. However, I want to make my own bigger button with hotkey alt+a.How to call BindingNavigator1. AddNewItem button from my button / or make hotkey for it? There is no existing method..
I have a class file framebuild with a class command and class commandlist(of command). I fill the comandlist with a method in the class commandlist, to do that I make in the class commandlist a new instance of commandlist. But now in form4 I want to make a listbox which represents the commandlist. Then I also should make a new instance of a new instance? It is no problem to fill the list in the class instance but I want to fill it in the form.vb
Public Class rts485command Property name As String = "" Property hexname As Byte = &H0 Property framelength As Byte = &H0 End Class [Code] .....
I have a DataGridViewImageColumn with an image in it I would like to make the only area to perform a function of mine when I click it. I can click the row and get it to work but can't seem to only make just the imagecloumn the clickable region.
So as an example I have Private Sub dgrdStatus_CellClick(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles dgrdStatus.CellClick MessageBox.Show("You chose " & dgrdStatus.Rows(e.RowIndex).Cells("columnCustomerName").Value)
Works for the whole row, my issue is I only want to be able to click the imagecolumn to do this. Guessing I am missing the right item similar to dgrdStatus_CellClick but can't quite pinpoint the fix.
i got a background worker that has the following code in the do work.... one of the things i want to do is to add rows if theres none available ...but i got an error saying i need to do a safe call thread...i already read about it but im stuck i put control.invoke, but that gives me an error too saying Error 1 Reference to a non-shared member requires an object reference.
I'm wondering if it's possible in VB.NET to make similar properties call one generic one?A sentence doesn't explain it well so here's a code example.I have a bit field defined like this:
<Flags()> _ Enum E_Operation As Integer Upload = 1
I have road runner (time warner) as my telephone service. I'm pretty sure you can't just go making free calls through the internet via custom software or every half-intelligent programmer would be making free phone calls.I would like to know if there is a way to make an outgoing call (on the same telephone line that your handset uses) and have a vocal conversation with someone on the computers microphone/(headphones/speakers) devices.
I have a function called DieRoll. In the function I have the following setup.
Dim objRandom as New Random Dim intRoll as Integer intRoll = objRandom.Next(1,7) Return intRoll
Everything works as expected as far as generating a random number (1 - 6) is concerned, except for one problem. If I have a series of calls to the function one after another, the numbers come up the same. Is there a way to make sure that each call to the function is much more random?
