I have a Visual Basic 10 program that one forms call another form.. On the called form I have a checkbox object and a 'Click' event associated with it.
My problem is that when the first form 'calls' the second form the second forms Checkbox's click event is called. it only happens when the form.show is used for the first time.
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.
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I have created a main form in my program to which I have added a combo box containing 12 months of the year. What I want is when the selected month is changed it should call a subroutine which does a calculation. The procedure works but the combo box acts as if the selected item has been changed as the form is opening which is not what I want as at that time there is no data loaded for the procedure to do it's calculation. So what I want to know is, is there some way to prevent the combo box from behaving this way at start up?
View 5 Repliesi have 7 picture boxex in 3 rows
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On click of a picture box a new form is displayed centre screen (across the 0's), i also have a leave event that will hide the form once the cusor leaves the picture box. it seems that when the new form is displayed on top of the cusor the leave event is executed and there is a quick flicker of the form. im baffled by this because it works fine for all of the other picture boxes
I am using a timer control to display a message form in my application, but it's not working the way I want it to. Currently, when the timer event fires I create a new instance of my message form & display it. But if the user is away from their desk & doesn't close the message form before the timer fires again, a new instance of the message form is created & shown. So how can I check to see if the message form is currently shown on the screen so multiple ones dont get displayed? This is my timer event:
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
Using frm As New MsgForm
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Do I need to use the default instance of the message form instead of creating a new one?
I have a VB (.NET3.5) project like this:
- form1: IsMDIForm = true.
- form2: adding a list view with 2 records, select first record, and register the event ItemSelectionChanged.
- Add form2 as a child of form1 (form2.MDIParent = form1).
- When use "form2.Show()" -> the event ItemSelectionChanged firing three time:
+ 1st: SelectedItem = 1
+ 2nd: SelectedItem = 0
+ 3rd: SelectedItem = 1
I want to know the rootcause (not Solution) of thi issue, can anyone help me !?
Project code: http://www.mediafire.com/?hhhdzh5te1wrod4
developed my app on a Vista laptop and deployed it on an XP desktop. When deployed the Form and even some controls are resized so text and portions of controls are not visible.Next I moved the project files and VB to the XP desktop and published the application on that machine. Same result, in fact the sizes were changed within the properties of the forms and controls within the project files
View 14 RepliesI have an application that runs in full screen. Controls are placed different when screen resolution is changed :
1024x768 :
1280x1024:
How to fix unwanted space added between grid and right form side,as in last image (1280x1024) ?
really weird behavior in Vb.net 2010 Express. Here is the code:
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim a As Integer
'... Other lines...'
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I have the following code to show event log entries in my app - but it is showing them as oldest first, where I really want to show newest first and perhaps even just show the latest 5 entries
Dim eventLog2App As New System.Diagnostics.EventLog("System")
Dim eventLog2Entry As System.Diagnostics.EventLogEntry
Dim eventCntr2 As Integer = 1
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where to start using VB to scan and save the image file to directories.
a program that emulates the simple tool from XP: Windows Scanner and Camera Wizard.
better yet if you have already a premade script in your library of scripts
I'm trying to make a button that, when pressed, activates a function that detects mouse left click this way: whenever I left-click, it sends key 3 and then 1 (keyboard).
View 8 RepliesI am using Visual Basic 2010 to develop windows forms and when I use two comboboxes one after the other with the dropdown turned on with the ComboBox_Enter event I lose the displayed value of the first combobox when the second combobox dropdown occures. If I comment out the second combobox ComboBox_Enter event so the dropdown for the second combobox dosen't drop down the display value displays in the first combobox. I have also put an empty text box between the two comboboxes and that also fixes the problem. So how can I use two combobox in sequence with the dropdowns and not lose the display value on the first combobox? My version of Visual Studio is 10.0.30319.1 RTMRel.
View 11 RepliesI 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.
View 2 RepliesDisplay ajax loading image before loading anycontrol .... means if i wanna show textbox on button click after showing loading images using ajax toolkit or ajax extension in vb.net ?
View 1 Repliesi am working on Scrollable form, when i am trying to print this form with PrintForm object its printing only the showing part not all the form this the code which am using. Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Me.PrintForm1.Print(Me, PowerPacks.Printing.PrintForm.PrintOption.Scrollable) End Sub
View 7 RepliesI open a form using .showdialog and load some info onto it. I have code that runs on the MyBase.Load event. Basically, I have a Try, Catch, End Try block and if the Catch executes in preparing my information, I want the form to stop loading i.e. give a message and not show at all.
View 20 RepliesWhy is my MDIChild form not being displayed in my MDIParent form? I want to click a button on form frmStudyResultsFilter which will then display an MDIContainer form frmCalculatedResults (maximized). When frmCalculatedResults is shown I want a small dialog modal form to be in the center of frmCalculatedResults. For some reason frmCalculatedResults will not show on top. Plus I get this error"Form that is not a top-level form cannot be displayed as a modal dialog box. Remove the form from any parent form before calling ShowDialog." Here is my code:
Public Class frmStudyResultsFilter
Private Sub btnCalculated_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculated.Click
Dim frm As New frmCalculatedResults
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am trying to figure out why my 2nd form is not displaying the value i recived in my first form.The code for the first form is:
Private Sub scannerOnCom_DataReceived(ByVal sender As Object, ByVal e As SerialDataReceivedEventArgs)
responceBack = scannerOnCom.ReadLine
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I'm sure I'm doing my login process for my app in a not so perfect way, but as with lots of things, it works. The issue is to make it work I have to use the very unpopular DoEvents thing. I would like my application to show a login screen before loading my main form. Currently I have a login dialog box with a FormOpen boolean property and an authenticated boolean property. If a user logs in successfully, I hide the login form, set formopen to false, and authenticated to true. If they cancel out, then I do the same and just set the authenticated property to false. If authenticated=false then I end the app, else I show the main form via application.run(MainForm)
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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]
View 7 RepliesAs you noticed, in the code bellow, the event argument for the form click event has the type "TimedEventArgument".When the event is raised, e.Time holds the time where the form was clicked.Add the missing code in the class Form1 to make this work.You will not change anything to the methods "Form1_Click" or "Form1.Load".You will not use Option Strict On. HOWEVER, you will not do any narrowing or late binding that wouldn't have been allowed if Option Strict was on.You cannot create any new Class, Structure or Module.You cannot cast the EventArgs to TimedEventArg in any way
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I am getting this error on showing the form from another form. [code]
View 2 RepliesI'm currently using VB.Net 2008. The project has the "make single instance application" checkbox checked. The application works by hiding the form when the form is minimized.
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I am making a Sport Carnival timer for a local school. Currently, I have the results go into another form that I want to get printed. I tried using the PrintForm method, but it did not work as I have to show, and have that window open to print it. This form also has graphics that I want to print too.
View 3 RepliesI'm trying to figure out how to set the form's location/size before calling the .show method. I figured out the location part, but still can't figure out the size part. No matter what size I set the form to in the designer, it never uses that, so I figured I would set it with code right after setting the location.
'set location before .show
Form2.StartPosition = FormStartPosition.Manual
Form2.Location = New Point(103, 449)
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In a Winform application, I'd like to animate the showing of a form a bit like when an email comes in and the notification window raises slowly from the bottom of the task bar.
I've got a few ideas involving timers and resize but they all seem complicated and/or clumsy so I wonder if anybody could suggest a simple way to do this or some magic function I could use to do it automatically.
I'm using VS 2005 and .NET framework 2
I have a form that has two buttons and a lable on it. The first button shows up and works fine (it opens a file). But the second button does not show up on the form at all. Yes, the Visible property = TRUE. I also have a second label on the screen, but it is not showing up either.
View 1 RepliesUsing VB.Net[code]...
When textbox1.focus() at that time i clicked Control + Enter key, the formid=55 is showing instead of formid=54.
I have a single form called 'FolderSelector' with a label, textbox and a button.The problem I'm having is that everytime I run the application, the only thing that shows up is a blank form called 'Form1', the program runs everything it should do except to show the actual form which is really weird.Here's the code in case there's something in there that's causing it that I haven't spotted.
Imports System.IO.Directory
Public Class FolderSelector
Public Const SPI_SETDESKWALLPAPER As Integer = &H14
Public Const SPIF_UPDATEINIFILE As Integer = &H1
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