Exceptions In Form Load Event Do Not Get Thrown On Vista

Sep 23, 2009

I'm using Vista Ultimate x64 to develop on and I have found that any unhandled exceptions that I would expect to get thrown in the Load event of a form do not actually get thrown... This happens no matter which compile mode I select (x86, x64 or AnyCPU). If I copy the exact same EXE to an XP machine then the unhandled exception is thrown as expected and the JIT debugger warning message appears. Its very annoying as absolutely no indication that an exception has occurred is shown, the program just loads normally but anything after where the exception should have been thrown is not executed. For example, if I create a new project now and stick this in the form load event then the program would just load as if nothing has gone wrong:
My.Computer.FileSystem.ReadAllText("----")

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C# - What Exceptions Should Be Thrown For Invalid Or Unexpected Parameters In .NET

Apr 21, 2009

What types of exceptions should be thrown for invalid or unexpected parameters in .NET? When would I choose one instead of another?

Follow-up:

Which exception would you use if you have a function expecting an integer corresponding to a month and you passed in '42'? Would this fall into the "out of range" category even though it's not a collection?

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Catching Exceptions Thrown By Controls Events?

Jan 5, 2011

I've a control that throws an exception in one of its events and I need to catch this exception. How can I do this?

Example:
Private Sub AxNtlxImage_Reason(ByVal sender As Object, ByVal e As AxNTLXIMAGELib._DNtlxImageEvents_ReasonEvent) Handles AxNtlxImage.Reason
' TODO: Deal with this reason message
Throw New ArgumentException(e.sText)
End Sub

I want to catch this exception from another procedure when it happens.

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Not Allowing A Button To Run Code If Any Exceptions Are Thrown?

Apr 27, 2010

I have a form where it is validating three fields. I want to have it so if an exception has been thrown in any of the three fields that the code that is in the button does not run and it redoes the validation.

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C# - Difference Between Load Event,Activate Event And Enter Event In The Form?

Mar 30, 2009

I am using VB.NET for Windows applications. What is the difference between Load event,Activate event and Enter event in the Form and in which order the above event is executed.

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How To Force Form Load Event On Form2 From Click Event On Form1

Nov 16, 2010

I'm trying to execute different code depending on the button clicked (button 4 or 5) on Form1, but when I click on button5 to activitae the code on the Form2's Load event everything is Ok, but when I click the back button to return to Form 1 and click on the Button4 to activate the code on the Form2's Load event again, it doesn't active the Form's Load event, is there a way to form the form load event every time I access it from Form1? [code]

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Call A Form Load Parent Event From A Child Form?

Jun 3, 2011

I have two forms. Form A and Form B. Form A has a datagrid that is populated from a SQL Database Table query. When a button is pressed Form B is launched that allows you to add a record to the database table. I need for the datagrid to be refreshed and show the newly added record when I close form B and go back to the parent.

[Code]...

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Ignore Load Exceptions?

Nov 17, 2009

ll app build in VB 2005 that has a DLL. The app runs fine on 32bit systems but fails on 64-bit ones (Failed to load the assembly: BadImageFormat from the DLL). As I could not fix the problem I wish to somehow ignore this error so the rest of the app can run normally. I wish to retain the funcionality on 32-bit systems thus not removing the DLL from the project.

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.net - Form.Load Event Not Firing, Form Showing?

Nov 9, 2010

I fear that there is something obviously wrong with my code, but I have come across a situation where the Form.Load event is not firing when I create and show my form. The form is not subclassed (as I've seen some problems with that in some searches), and I am not getting any errors thrown when I step through the code in the debugger.

I have a break point set on the IDE-created form load function (which does have the Handles MyBase.Load signature suffix) but the breakpoint is never reached and the form does display and work.The form is passed three arguments in the constructor but the IntializeComponent() function is called before anything else is done.

[Code]...

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Form Doesnt Seem To Be Firing The Form Load Event?

Sep 7, 2009

My form load event is not running. How do I track down the coulpret?davidbell

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Set FrmFrontEnd In The Form Load Event To Be The Parent Form?

Aug 3, 2009

I want one form frmFrontEnd to be the base of my application, so when i press F5 it is the first to 'open/be seen' and then from here using previous i want other forms to open. How can i set frmFrontEnd in the form load event to be the parent form? If you're not living on the edge, you're taking up too much room

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What Happens Before Form Load Event

Dec 21, 2011

I have a form and initialize some global variables on its Load Event. There is a TextChanged event in one control (a textbox) that uses that value. The TextChanged event of the control is triggered before the Form's Load event even if I do not change anything on the TextBox, it looks like that happens when the control is loaded. Why is it doing it before the form? and what event can I trap in order to assure it's the first thing that happens?

Its as simple as this:

vb.net
Private Sub PackOutMain_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
ActiveFlag = False

[Code]....

My guess is that the msgbox should not appear until the flag is set to true somewhere in the code and then change the contents of txtUser, but it is shown before the form.

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Catch An Exception Thrown By A Control Event?

Jan 21, 2011

How can I catch an exception thrown by a control event?I have a control that throws an exception in one of its events and I need to catch it but I don't know how.Consider for example that the text box control throws an exception in its click event. How can I catch such exception?

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Event That Fires After Form.Load?

May 12, 2010

I'm looking for an event on a form that fires after Form.Load. Specifically, after the form has been displayed. Is there one?

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Form Load Event - How To Kill EXE

Apr 3, 2009

I am writing a program in vb.net I have to call an exe(printstatus.exe) in form load event. I successfully called exe. But I don't know how to kill that exe (printstatus.exe) when an user is logged out.

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Form's Load Event Not Called?

Apr 25, 2011

I was having a problem with the debugger not stopping at breakpoints. After a lot of work that yielded no results, I realized that the problem was occuring in the form's load event and subs called from that event.

The problem is that it appears that the load event is not being called. Other startup forms in other projects in the solution seem to be working ok.

what could be keeping the the Load event from working?

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Load Event For Form Error

Mar 8, 2011

I have the following code in the Load event of my form and the 3rd statement obviously fails. My question, why does the code fail and not tell me about it? In other words, it fails and then simply displays the form without crashing. It also doesn't execute my 4th statement.[code]...

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Set Focus In Form Load Event?

Jan 14, 2012

I write a code in My Form Load event as:

txtPassword.Focus()

But it is not focus in my txtpassword textbox . i focus 0 index txtUsername textbox. How i define to focus a control when form load

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VS 2010 Event Before Form Load?

Apr 30, 2011

so I have the following

Try
Dim username as String = My.Application.CommandLineArgs(0)
Dim password as String = My.Application.CommandLineArgs(1)
Catch
Msgbox("Cannot launch")
Application.Exit
Exit Sub
End Try

I placed this in the form's load event. What I want is for this check to run before the form even loads.If an error occurs, the msgbox comes up and the form is never seen. When I try the code now, the form comes up the msgbox shows. When the user clicks OK the form closes. I tried placing it in the form's designer but the designer tries loading the form any way. How do I get this check to run before the form shows?

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VS 2010 Form Load Event In .Net?

May 2, 2010

I am making the Transition to VB.Net (using VB.NET 2010 express) and I have a simple problem that is driving me crazy. I wish for my Form when it Loads, initialise and then call a sub and do some stuff eg perform a plot. If i place a button on the form and click it the sub works fine.This task was simple to do in VB6 but for the life of me I cannot get it to work in VB.NET. Has the Form-Load event changed in some way with .Net?

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VS 2010 Form Load Event?

Mar 6, 2012

I have a calculation project with 6 forms. The last form shows all the input and output data from the previous forms. This is accomplished in form6 load event. Form6 contains about 40 controls (mostly textboxes, labels and few pictureboxes), populated in this way:Textbox1.Text = Form2.Textbox3.Text, etc.I am not sure if this is a good practice. I know I can use the DGV, but it does not suit me because of the graphical reasons.

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Way To Trigger An On-load Event On One Form From Another?

Mar 8, 2012

I have one form (FormA) that fills a combobox with data when the on-load event is trigged.In that combobox, I can select "New value" which opens another form (FormB) on top of FormA.On FormB I add the new data and saves them to a Database.Everything OK till here.I then close FormB.... and return my attention back to FormA.Now I would like to reload data into the combobox, but everyway I have tried, it will not work.

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Why Load() Event Of One Web Form Effects On The Other

Jul 5, 2009

I have a web form called "AdminHome" in it in the Page_Load() i have added

[Code]...

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Form.Webbrowser Control Different Between Vista 32bit And Vista 64bit?

Oct 11, 2009

I am been working on an a small app that has a Forms.Webbrowser control that navigates to a Adobe Flash program. I have developed the app on Vista 32bit platform and have had no problems. I have sent the app to a couple of people to test out and one is using Vista 64bit and is running into a problem. I know the webbrowser control just uses the underlying base framework of IE. The problem on the 64 bit machine is when the site is navigated to it says that it needs to have Flash installed. When the user goes to Adobe's site it says they need to use a 32bit browser.

As stated on Adobe site here:[URL] the Flash player need to be in a 32 bit browser. What options do I have to be able fix this problem? Is there another control that I can use that would be the same in a 32bit platform and 64bit platform? Besides navigating to the Flash program, the browser also goes to standard web pages.

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Call A Form In A Form Load Event?

Sep 1, 2009

I have one form called invoiice1.vb In the load event how can i call another form ? I also call some values of thatt form

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Call The Sub Form The Load Event Of A Form?

May 4, 2009

I have a sub declared inside a module which accepts form as argument.

sub display(fname as form)

What I need is to call the sub form the load event of a form. I tried the following.

display(me)

But cant access the controls of the form inside the sub.

sub display(fname as form)
fname. 'no controls of the form are listed?????????????
end sub

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Form Close In Form Load Event?

Nov 19, 2009

I have two forms , first one is search and second is showing the data searched by first form search criteria. When the search query runs it takes lot of sql server resources, so I have passed that query to second form, it searches in database and shows the results. But if the results are not found I wish to close the second form in Form load event. As Second forms form load event searches for the record. I tried to use SecondForm.close in SecondForm.load event but failed to do so.

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Execute The New Class From The Form LOAD Event?

Oct 25, 2010

I want to develop a program using VS 2010 Pro, VB and .NET 4.0 to run on a Windows standalone computer.The program will be loaded by another program that checks for a text file in a directory.When that file exists, the program I want to develop will be started and it will process the text file.The new program will not have any buttons or dialog boxes, it will simply display the progress of the processing of the text file and then it will simply terminate and exit.

I know I can start the processing by putting code in the LOAD event for the form, but i want to make a new class for all the processing to start from and have the new class perform all of the steps necessary to complete the processing of the text file.Of course this new class will use other classes to do all of the different processing steps.How do I execute that new class from the Form LOAD event?

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Auto-scalemode And Form Load Event?

May 8, 2012

What I have found is that ifAutoscalemode is set to DPI or Font, the form Load event is raised during the form constructor (sub New). When autoscaling is not active, the form Load event is not raised until the form is displayed (Show method).This change of event sequences caused various errors from code I had in the Load event for various forms because the controls on the forms weren't completely initialized. I have worked around the errors for the most part so it isn't much of a problem anymore but it is forcing me to change some coding habits (maybe not good habits) that I have been doing for years.

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Bindingsource.fill In The Form.load Event?

Oct 14, 2009

In my form.load event, there is a bindingsource.fill event.After the .fill, there are two or three other lines of code that query the newly filled tablemanager. The code gets the number of total records and displays that number on the form.Here is the problem ....When the .fill statement is executed, control reverts to the form and any statement AFTER the .fill event is not executed.I have tried to stick the remaining lines of code into some other form event with little success. These three lines of code only need to run once.Does anyone have a suggestion as to where to stick these lines?

Private Sub SCDBEditWindow_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load 'TODO: This line of code loads data into the 'SCDBDataDataSet.StampCollection' table. You can move, or remove it, as needed.

[Code]...

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