Creating Forms And Objects Through Code In The The Load Event Of Form1?
May 22, 2011
I've been working on creating forms and objects through code in the the load event of Form1, truthfully theres a few questions I have under this one category but to start I want to create a button click event that will check what button was pressed then set that button to a variable. I want the event to treat the button that was clicked like it was that buttons click event.Here's a shortened version of my code (Lol if you can call this short):
[code]...
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Mar 3, 2010
I am trying to develope a small graphics application in VB.NET. My startup form has a picture box with a background image loaded from a file. The user can click spots on the picture box and this draws some circles on it. On exit the coordinates for these spots are saved to a file.In my form load procedure I load the background image, the coordinates for the graphics(saved from the last time the program was run), and then call the drawing procedure.
The drawings appear for an instant and then dissappear. If you click the picture box the graphics re-appear.The form works fine once you do this.I guess the picture box is refreshed by the form load event and this is causing the drawings to be wiped.(I stalled the call to the drawing procedure by using a timer and this works but I am sure there is a proper way of fixing this)Is there a way of ensuring a form is fully loaded or making sure the drawing procedure occurs only when the form is fully loaded?
HERES THE
Private Sub Form2_Load(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles MyBase.Load
Me.WindowState = FormWindowState.Maximized[code].....
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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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Jan 25, 2011
I am trying to write a program using Visual Basic 2008 Express Edition that will automaticlay generate multiple Command Buttons that have different Texts and perform different commands.For example I want to generate Button_1 and Button_2 where Button_1 when clicked enters the value "1" into a textbox and Button_2 enters the value "2" into the same textbox.I know this can be simple done by using the designer and wirting the code in the Button_1_Click, but what I want to eventually achieve is for various buttons to be generated across different Tabs in a TabControl.So far I can create a button on a windows form using code, but the button has no purpose so command is assigned to it. The code i've used is listed below:
[code]...
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Mar 18, 2012
i need to pass on some variables from FORM1 in to a procedure in form load event of FORM2 to say in another way i need to run a procedure (which uses variables of FORM1) which is derived in FORM1 class and in FORM2 load event
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Dec 27, 2009
You have a form with 5 Textboxes and 1 button.
Write the code missing in Form1.Load so when the button is clicked, Textbox5 takes the value Done
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, _
[CODE]...
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Mar 5, 2009
If I create a new form, say Form2, in order to use it in a program I must create an instance of it: Dim frmTwo and new Form2, If Form2 has a text box on it I can put this code in Form1: [Code] But what happens if I want to refer to an object (a text box)in Form1 with code in frmTwo? This doesn't work: [Code] How is the instance of Form1 created? And How do I refer to it?
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Feb 3, 2010
I am trying to create a form where depending on what the user selects, they are shown a collection of images from the web. Depending on what they select there will be a different amount of images so each picture will need to be added dynamically.
I am able to create PictureBoxes dynamically however I'm stumped how to create event handling in order for each control to give a unique response.This is what I originally tried but I got an error..
Private Sub Form1_Load
For i=0 To 10
Dim picBox As PictureBox
[code]....
The error I got was
'AddressOf' operand must be the name of a method (without parentheses)
How ridiculous that you can't include arguments in your AddressOf! Can anyone shed some light on my situation (or knows a better way of carrying out my goal)?
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Oct 27, 2009
In my window application, Form1 variable eg. Public str as string. value blank/null when move to Form2 and Back to Form1. How to maintain Form1 varable's value when back to Form1 In vb.net if any one know, reply me soon
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Feb 16, 2009
I have got 2 forms ----- form1 and form2
i wanted to navigate from form1 to form2. and then close form1
i did the following code.
-sub form1 _ page load
dim form as new form2
form.show()
me.close
-end sub
i also tried -- form1.close() and form1.dispose() but all in vain
Problem is that my form1 is not getting closed
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Jun 17, 2012
All the code i found for multi-threading is complex and not clear.What i want to do is creating a thread for reading and analyzing a big text file on Form_Load event, so that the form UI building continue without waiting for reading and analyzing the file finish.
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Jan 13, 2010
I got a combobox, that when the texted is changed, its supposed to run a query to update a field in my database. Here is the issue The event im using is TextChanged, well unfortunately when the page loads, it changes the text when populating the values. Is there a way to make this event wait to fire until after the list is populated? Ive ran into this problem before with datetimepickers, but I was able to offset it with a boolean, but this combobox is calling the textchanged event everytime it adds an item to the list.
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Dec 29, 2010
If I have a large number of classes, each similar to the other in certain aspects (they all share a common base class, but each does things differently), and I need to create Windows forms for each to allow easy changing of their values through a GUI? Create one matching form for each object in VS' forms designer, Or Use code to create the forms dynamically at runtime.
#2 makes the most sense to me, because a lot of these objects will share very common features of the form, notably "Ok" and "Cancel" buttons. But one object might need to draw a textbox on the form while another might need to draw a combobox. Not to mention, if I want to put icons on the "Ok" and "Cancel" buttons, I'd have to do this for each copy of the form in designer, and that sounds like it could get out of hand quickly.But is drawing forms through code sane? VS' forms designer is pretty sophisticated and designed to make life easier. Am I wise to consider ignoring its functionality and diving into the trench warfare of forms design through code? Or are there examples of automating form creation based on an existing object's properties?
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Sep 3, 2010
I have an assignment to complete, that for the most part is half way done, the application starts with the number zero (0) and anytime the count button is pressed, the a one (0) should be added to the output label?
Public Class CounterForm
Private Sub countButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles countButton.Click
countTotalLabel.Text = Val(countButton.Text) + 1 End Sub
End Class
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Mar 1, 2010
I have a simple vb.net app written using MS Visual Studio 2008 with SP1 and .NET framework version 3.5. This app simply queries a MySQL table into a dataset, makes a csv file from that data and then uses Oracle SQL*LDR to load a local Oracle table. Nice and simple.
This app runs fine on just about any computer or workstation I have tested it on with no issues but when I move it to the workstation it will live on...it shuts down just before it hits the load event. I have tried to capture any errors but so far there do not seem to be any errors generated at any point...it simply terminates with no explanation.
I even went so far as to recreate the project from scratch and still got the same result. this phenomenon only seems to occur on the very pc I am expected to deploy to.
the only thing I know for sure is that it is getting at least as far as the declaration section of the form. Once it has dimmed all objects/variables/etc..it seems to just shut down.
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Sep 7, 2009
I have two forms. On form one, I have a serious of check boxes and in form two I have functions relating to those checkboxes. When the second form loads, I check the Checked State of the Check Boxes, and run the appropriate functions. This is working just fine. The problem I have, is that the second form doesn't show until the functions that have been selected have completed. It would be ideal if the form would load and then run the functions.
I don't think that I could have everything run on startup, but hopefully there is another method. I know I could load the second form and then just run the code in the previous form, but this is less than ideal, because I can't show the second form as .ShowDialog and I want to be able to split up the code into the other form so that it's not so crowded and easier to read on the first one.
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May 3, 2012
when i create a new form i get this in the codePrivate Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
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Feb 16, 2010
I have a control that is created in the code behind and generates fine but I can't figure out how to create an event handler for it.I've found plenty of examples for it in C sharp, but none of them seem to apply to VB.
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Jun 18, 2010
I Want A Web-Browser (WebBrowser1.Navigate [url]) to navigate to a direct site witha .txt file so the text appears in the browser. ok that works.
When Form1 Loads I want To Use This But It Wont Work WebBrowser1.Navigate[url] but it will only work if form1 contains WebBrowser1.Navigate[url] and button1 = TextBox1.Text = WebBrowser1.Document.Body.InnerText.
Final Question How Can I Get Form1.Load To Do Both Operations
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May 6, 2010
I am working with database information,and I have to add code in a dateforms , load event handler .That should set the value of the date time picker to match that of the date time picker in the main form?
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Jan 17, 2009
I have some code that currently executes when the form loads. I need for the same code to execute when the form is shown. [code]...
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Feb 23, 2009
I have a form that is built and loaded dynamically when File/open is selected.however I now want to use the same code to open a default file and populate the form using the Form load event to call:
Private Sub OpenToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OpenToolStripMenuItem.Click how would I do this? Just incase this doesn't make sense, I want the same code to run during form load as if the user selected file/open but do not know the syntax of how to call OpenToolStripMenuItem_Click() from form load.
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Sep 18, 2009
I've been following a codeproject article on using the interop forms toolkit (basically a way for developers to slowly upgrade their VB6 projects to .net by allowing .net components run in VB6)
[URL]
While the .NET form is working fine in all other testing projects and environments, I've found that the Form_load event is actually firing twice once it's in executing in the VB6 runtime.Not only annoying, its forcing my initialization code to execute twice (causing all kind of problems on the second run).
If (runBefore = True) Then
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Sep 27, 2009
I have a command button that when presed allows the user to rename a label on a control ( form ) b4 its loaded.i want to put a command in the forms load event to take out any spaces b4 text in label1.
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Jul 17, 2011
I have a form for which the form load event only fires one time. When the program starts. It will not fire again until I end the program and restart. I have tried .show and .showdialog, but it acts the same. I have read about form load events loosing the handles, but my code looks exactly like it should.
Here is the load event code
PrivateSub frmBilling_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) HandlesMyBase.Load
LoadClients()
LoadTherapists()
LoadCPT() EndSub
Here is the code that calles the form.
PrivateSub BillingToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BillingToolStripMenuItem.ClickfrmBilling.Show()
frmbilling.show()
EndSub
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May 17, 2009
I've been having a problem setting certain items in a listbox as checked when the form is loaded. I have tried putting the code in the form_activate, form_load, and form_shown events and each still crashes when it encounters:
[Code]....
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May 5, 2011
I have question about Label.Text.
When run the code Form1 load together with Form2.On Form2 I have Label1.I need that Label.Text flicker or blinking.
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Apr 14, 2011
i recently received a new work pc and have installed visual studio 2010 premium on it. this was installed on my old machine as well, the only differece between the two PCs being my old one was 32bit and the new one is 64bit.With that said, when i create a windows form project and drop a control on a form, double click that control, the default event code is created for me.It is missing the "ByVal" portion of the code. Using a textbox as an example, below is the code it generates. Is there a setting that I'm just missing and need to turn on? I've been using visual studio since version 2005 and i've never seen this before.
Private Sub TextBox1_TextChanged(sender As System.Object, e As System.EventArgs) Handles TextBox1.TextChanged
End Sub
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Feb 7, 2011
i have this portion of code to display the objects and position them but they arent showing on the form1 load how do i fix this?
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Mar 11, 2010
I have login form as start up form and i call Form1 after successful validation and in Form1, i have close button on click of Close i would like to reset username and password fields on loginform to null. If i add code in form1 below i get exception Dim fmLogin As New LogInForm
An unhandled exception of type 'System.StackOverflowException' occurred in System.Windows.Forms.dll
Make sure you do not have an infinite loop or infinite recursion
I get above on LoginForm below statement Dim fmMain As New Form1
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