VS 2008 Form KeyPreview On Many Forms Of Large Application
Apr 11, 2012
As quick solution to the user wanting to be able to open a particular form from any other form (in a large application with many forms, not an MDI app), I added KeyPreview to each form and corresponding KeyPress event so that said form will open (ShowDialog) upon pressing F12 from all these other forms.
Since this update has been in place, the user has been getting intermittent (maybe 2 or 3 within the course of a workday) but nasty errors such as "exception has been thrown by the target of an invocation" and the dreaded "out of memory". Is there reason to believe (off the top of your head) that the KeyPreview could be causing this?
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Oct 20, 2010
I set the HourGlass, disable the button (to avoid ppl that are too used with FPS games), do the serial communication bit that last a couple of seconds, then the set the mouse back to normal and re-enable the button.And I have a few more like those through the software using text boxes or drop-down menus.[code]My form is set in design time to be KeyPreview = True and I even tried to set it again after the Click. The routine is simply not called and the ESC key on the keyboard does not hide the form anymore.
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Mar 17, 2009
I have a large financial application which I am migrating to VB.NETIt has two main components: charting and financial statements.I want to know if it is possible (and how) to create a main exe, and then two separate projects for the two components (as dll's?).
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Apr 27, 2010
I have a button that will run a video file in the Windows media player box, first up, is there a way for that video to display full screen on a secondary monitor?My plan was to have a large form that spread across the two screens with the control buttons on one side and the video on the other, is there an easier way to do this? Otherwise I think I might have to look at making an individual form for each screen and then somehow getting the buttons on say form1 to do the work on form2. Again is this hard to do?
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Dec 22, 2011
modify console application below to window form application for me.I've tried by myself for million times, but i couldn't console application.rar?
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Oct 2, 2009
In my WindowsFormApplication I have a ToolStripTextBox. I want this to get the focus and have all its text selected when the user presses the "i" key - no matter what control has the focus. That's easy, I thought, if I set the form's KeyPreview property true (originally I did this in the FormDesigner, but doing it in the form's Load eventhandler makes no difference) and have the following KeyDown eventhandler:
Private Sub Main_KeyDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
Beep() ' For debugging only
Select Case e.KeyCode
[code]....
But this does not work!? The above Sub is called only when the ToolStripTextBox has the focus and only AFTER the event has been handled by that control.
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May 15, 2012
I have set KeyPreview Property of the form to True and in the KeyDown event capturing the 'Enter' key to navigate to the next control on the form (using Me.SelectNextControl). But for one particular textbox i dont wish to perform the form's keydown event instead i want that when the user keys ctrl+enter it should perform some particular task. I have noticed that when the keypreview is on the keydown event of the textbox isn't executing.. The following is the code i have used for textbox keydown
[Code]...
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Apr 7, 2010
I have to write an application that consists of mainly one main form, but several different things I wanna display. Pretty standard I guess. So there is a menu, some controls, and the main stuff below (ranging form graphs, tables, dropdown boxes, print preview, etc). I would like to use it like one would use frames in html, design an object that is limited to a box or panel that I define. The literature I have does not give me a clear idea of how to do this (yet). The most obvious seem to be the use of MDI, open a predefined form with no borders, maximize it before showing and remove all minimize/maximize options. But that does not work so well. The form inside the MDI parent does not fit the size that is given for it when it is loaded. e.g.
[CODE]:......................
So my main question is: Is MDI the way to go here at all or are there better/easyer ways to achieve this? If MDI is the way to go, how do I sucessfully restrict a child form inside another object, without giving the user any opportunity to resize (i noticed that I have minnimize/maximize/close buttons, even if I disable them on the child forms themselves)
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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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Dec 27, 2009
I am currently helping to write a Visual Basics program that was originally writing with access.The Original Access program has been used and modified over the past 5 years, During that time the database has gotten pretty big.The problem I am having is If I add the entire database to my data sources it creates data tables for every Table and Stored procedure even when they are not currently used in the program resulting in a 20+ minute build time just to debug.I am currently only adding Tables and Stored Procedures as i need them, so its not that much of a problem now, but as I continue to work and add tables the build time is going to go back up, and Id hate to have to wait 20+ minutes to test a small tweak I made.
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Dec 4, 2009
I need to create form-application witht many forms.How profession is doing spalsh form. Is it splash-form is main form of application, or application have main form, that hide on start and show child splash form.
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Jul 20, 2009
I am writing a Class Library for a GIS Windows application. The class has a form that I open when I load the dll command in the application. After the form opens the form moves to the back of the GIS Windows application, and I want it to be in front of the GIS Windows application all the time. How can I do this?
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May 28, 2011
how to get all the active mdi child in an application..it is possible to work? me.ActiveMdiChild.Name
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Oct 12, 2011
I'm working on a project that involves localizing a large number of Windows Forms. We're dealing with layout using the TableLayoutPanel control, which works nicely. One area we're striking problems with is when we set the Form.Localizable property to True, we then end up having to manage one .resx file per form per language.
That would be fine if the .resx files only contained the Localized text, but it also contains a vast amount of layout data for the form. Is there a way to separate the localizable text elements from the control layout information, that continues to work in the visual studio IDE? I've noticed that I can modify my the form's designer file to look at another resource file, but when I use the form designer, these changes are deleted:
'Label1
Me.Label1.AutoSize = True
Me.Label1.Dock = System.Windows.Forms.DockStyle.Top
Me.Label1.Location = New System.Drawing.Point(3, 0)
Me.Label1.Name = "Label1"
Me.Label1.Size = New System.Drawing.Size(61, 13)
Me.Label1.TabIndex = 1
Me.Label1.Text = My.Resources.ResourceManager.GetString("Form1_Label1_Text")
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Mar 11, 2012
I've got a collection of a type of form and multiple of these can be displayed on the screen independently at the same time and now I'm wanting to add the ability to cascade these forms, but these forms can all be re-sized so it'll be very rare when they are of the same or similar size. I would like to be able to cascade them based on their present size, so the largest for is in the back and the smallest is in front.
I also realize that a form could be wider than than another form but that other form is taller than the current one, in which case I would like the taller form to be considered the larger one (an arbitrary decision, I know). Here's the code I currently have that cascades them in the order they are in the collection, I just need to know how to re-order them based on their size.
[Code]...
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Jun 3, 2011
I am wanting to change my startup form for my application in Visual Studio for VB.Net. I double clicked "My Project" in the Solution Explorer and then clicked on the Application tab. For some reason I only see 12 forms out of the 6 forms I have in my project when the "Enable Application Framework" check box is True. When the check box is False I see all my forms, why?
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May 14, 2010
i have a query of opening a new Application(eg. UgNx,Ansys)file with in a Panel (Which is already dropped on a Window Form).
For Example :-There in one Window Form and i have fixed a Panel there now with in the panel i want to open a new Application like other softwares UG NX or Ansys.
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Apr 13, 2010
I only managed make the form always on top. But what I want is when the form is on top, user cannot access the other application in the windows.
For example : Some messagebox won't let users access the other application until the users hit the OK button.
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Jan 16, 2012
I am not able to find the Exclude Command in VB 2010 Express. I have no idea which version of Visual Studio it is working with. I've got one 217MB VB 2010 Express file and many 2008 VB Express files with one of them measuring 31 MB. There many other SQL files and .Net Files.
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May 25, 2009
I am using the following code in the 'Application.Designer.vb' to set one of the two forms as the the mainform for my splash screen.The global string array gSetupStr(0,1) only produces a correct result when any Msgbox is inserted before the 'If' statement.However,I do not want the Msgbox during a splash screen, but do want to control the mainform. [code]
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Nov 26, 2010
I'm upgrading a project from VB6 to VB2008.I have a routine that clears a combo box, named 'cmbDataTable' which could be on any form. I pass the form and the combo box is cleared.
[code]...
I assumed it would be the same in VB2008 but I get the error.'cmbDataTable' is not a menber of 'System.Windows.Forms.Form'I am working my way through the project, first updating the global procedures - this is one - I haven't written the calls so cmbDataTable doesn't yet exist.
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Nov 1, 2011
What I am trying to do is to instantly apply a filter to a large list of data such that the list is updated almost immediately regardless of the number of items in the list. I have this working using a listview right now but it is far from instant, a list of 5000 items takes over a minute to get through. What I do currently is to maintain a cache of my data that my listview entries are based on. When the user selects a filter I parse this data one item at a time and determine if each item should still be displayed in the listview, if not I remove it. The complexity of determining whether or not a data entry meets the filter requirements is O(1), but just getting through each element in a loop takes significant time, and so does updating the list view graphically at the end of the process.
I have considered using a datagridview instead, using a database connection. I have never done this before and my main question here is whether this would allow me to do what I have described. With the database I could form an SQL query to return only the items that meet the new filter requirements... but would the data in the form update immediately, or would there still be significant delay?
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Jun 17, 2012
I have a problem with a memory leak in a very large ASP.NET application. After about 24 hours of usage (sometimes a lot more) an OutOfMemory exception is thrown. Therefore I am trying to understand how managed memory works in .NET. When does an ASP.NET application throw an OutOfMemory exception? The server has a lot of RAM and there is always plenty of memory left when an OutOfMemory exception is thrown. I understand the difference between virtual memory and physical memory. How much memory does the W3WP process have to consume before an OutOfMemory exception is thrown? Is there a setting somewhere e.g. in the Machine.Config file? The ASP.NET process is never recycled.
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May 5, 2010
For reasons that are beyond my control, I have three Projects. Projects A and B reference project C. Project A references project B so that it can open a large form in project B. I now need to open that large form from project C, but VB won't allow me to add a reference from C to B because that would create a circular dependency. I found a way around it, though. I created a Timer in A, and when I opened C from A, I passed in that timer. When the user performs a certain action, I enable the Timer from A, and this causes C to open B for me.
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Jan 15, 2011
I am trying to find a way to show a large amount of data that spans across multiple forms and text boxes. I am making a somewhat summery of the input strings.
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Feb 8, 2011
Building a large application using 3 tier architecture in vb.net. Question: I am a vb.net developer. I have developed small and medium size application with 2 tier architecture. Now I am going to develop a large application. I have decided to develop that application using 3 tier architecture. So I studied about 3 tier. Now I know how what is 3 tier and how to develop a simple application. And also I studied about .Net Remoting and Web services. In my project, 7 modules are available. Each module has 3 layers. How can I manage in a Single Solution?
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Apr 21, 2009
I am trying to build an application using vb.net that will serve as a very large checklist of sorts. and i'm not exactly sure of the best way to do this. I considered using a database but i would need it to be self contained without having to rely on a server or internet connection
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Jun 9, 2011
I want to write a program to do Markov chain, but my states are quite large. First of all I calculate all the transition probabilities and revenues for all states(1381860 total states), and store in a multidimensional array. Public RevArr(0 To 9, 0 To 750, 0 To 282) As Long
After that the iteration of markov chain should use these as inputs to calculate the steady-state probabilities. But when I try to run the main code I got this error.Exception of type 'System.OutOfMemoryException' was thrown.
The following is the declaration of second array I add just another dimension for storing all the iterations, but I get this error. Dim stateprob(IT + 1, 0 To 9, 0 To 750, 0 To 282) As single
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May 2, 2011
i want to load customerID and customerName in a combo bom. ID will be invisible and name will be visible in column using visual basic 2008 for windows application.
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Dec 23, 2009
my application will remain open after closing every form. This is a recent issue in previous versions my application would close. I call dispose(true) on all form closing/closed events. (some forms require it on closing instead of close because of some custom made classes.)?
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