Showing A Modal Dialog Box Or Form When The Application Is Not Running In UserInteractive Mode Is Not A Valid Operation?
Sep 5, 2008
I am writing a web application using .net 3.5 and vs 2008 which allows people to add data to a db via a control panel front end.Objective: Before committing one of the fields to the db i would like the user to answer Yes, No or Cancel to confirm their action. I have tried to implement this with a modal dialog box or message box but the following error appears: Server Error in '/' Application.
View 10 Replies
ADVERTISEMENT
Jun 23, 2009
I am checking emailId exists in DB, If ExistsI am looking to create a Ok/Cancel confirmation dialog.if user say "Ok" I am redirecting to some other form.[code]...
View 3 Replies
Oct 22, 2009
I'm currently trapping all unhandled exceptions in my VB.net app to apply logging,but I still want to be able to halt and/or stop app.while displaying a dialogbox similar to the builtin unhandled exception dialogbox, where app. seems to stop to a grind until user presses continue.I think I perhaps need to start the dialogbox as part of another application, but I don't know if I'm able to halt the erroneous app.
View 11 Replies
Jul 5, 2011
I am trying to show a message box when an error occurs in a modal dialog window but for some reason the message box is never shown although I know the MessageBox.Show method is being hit. The try catch block is inside of an event handler for a windows form that is being shown as a modal dialog. I know that the event is being fired and that the error is being caught but the message box never opens. I've replaced the MessageBox.Show with another form show and it works fine but I'd rather use MessageBox instead of creating my own error form. I just can't seem to make MessageBox work. Is this a limitation of MessageBox? Here is a simplified version of what I am doing:
[Code]...
View 1 Replies
May 7, 2010
Showing and Hiding Forms from a Console Application causes "Cross-thread operation not valid."
View 1 Replies
Apr 1, 2011
I have opened an existing project and made changes in the design mode. (For example, I added a new button.) But when I tested the program using Start Debugger, none of my changes showed up.
View 1 Replies
Aug 7, 2009
I'm having an interesting issue that I can't reproduce on a different project, but can consistently on this one. I have no clue what might be causing it, but am hoping that someone may have seen it before.
I have a main form, from which I run a series of checks. On this form, I have a listview control. Because of some issues with the refreshing of this listview control, I had to create my own messagebox. It's just a form that displays some text ( it also happens to look nicer than MsgBox; in my opinion, anyways ). It's been working great for months, until recently.
My problem is that on my main form's load event, I run this check, which returns an error within a try/catch block. I then call my custom messagebox with a message. It in turns calls it's ShowDialog() function.
In any other situation ( after the main form has been loaded ), I have no problems. The messagebox goes on the screen and behaves appropriately ( ie: waits for my input and acts as a modal dialog ( stops execution of my main form's thread ) ). However, on this onload event, my messagebox comes up and goes away almost immediately afterwards.
I've traced it all the way to the showdialog() call. For no explicable reason, it appears to skip right over this call, without me doing anything on the form.
Here's what the inner trace looks like ( when I put a breakpoint on the onclosing event for this messagebox form ):
CODE:
View 10 Replies
Feb 3, 2010
I want to be able to check if there is currently a dialog or modal form shown for my form so that I can close it.
Is there a way to do this?
View 1 Replies
Jul 21, 2009
I have two forms for my application, that are visible in the Windows taskbar. When a modal dialog is popped up on the main form, the secondary form is locked. However, when the user clicks on the secondary form on the taskbar, it appears over the modal dialog box, and is basically frozen. Is there a way to ensure that the modal dialog box does not draw underneath the secondary form? The topmost property is no good, since this draws on top of everything, even stuff not related to the application.
View 1 Replies
Mar 22, 2011
sometimes (not everytimes), when I call the Me.Hide() in a form, which I called with .ShowDialog(), the main form, which called this dialog minimized.
View 2 Replies
Nov 25, 2011
I'm using a background worker to in an Excel VSTO application to throw up a progress dialog box with a status bar and a cancel button to escape from long running calculations. It's working really well, except for one issue. I'd like to use a Modal Dialog, so that the UI behind the dialog gets locked up, instead of a Modeless Dialog. If I use .ShowDialog() instead of .Show(), everything is great until you hit the Cancel button on the form. Following things in the debugger, the cancellation happens, it just takes somewhere in range of 30 seconds. If I use .Show() on my form, then the cancellation occurs immediately as it should.
[Code]...
View 2 Replies
Jan 26, 2010
I'm new in .Net and I have an application with windows form "LOGIN" When users enter the user and password and click "ok", then if user passes validation then I have the code Show(MDIMainMenu) (I'm trying to open an mdi form), but I receive the following error: "Form that is already visible cannot be displayed as a modal dialog box. Set the form's visible property to false before calling Show. Error Number 5"
[Code]...
View 2 Replies
Nov 16, 2010
Is there a way to launch a Modeless Dialog that stays active even when a Modal Dialog is launched? Can I put the Modeless Dialog in a seperate Thread or something like that?
View 3 Replies
Nov 16, 2010
Is there a way to launch a Modeless Dialog that stays active even when a Modal Dialog is launched? Can I put the Modeless Dialog in a seperate Thread or something like that?
View 12 Replies
Jan 31, 2011
I have created a custom Combobox and added it to my toolbox, and it works well. Now I have added a custom ListBox to the same file as the combo box, but it does not show on my designer when I place it. I can however add it at runtime.
''ComboBox
<DefaultEvent("SelectedIndexChanged"), _
ToolboxBitmap(GetType(System.Windows.Forms.ComboBox))> _
Public Class ProjectsComboBox
Inherits ComboBox
''My Customization
[Code] .....
I have tried removing the "DefaultEvent..." and still no dice.
View 2 Replies
Aug 1, 2011
i made a form as big as my screen and remove the button on the title bar to ensure that the form will not be tamper with, but i still can make it small using mouse arrow drag, going to last border of the form.
View 4 Replies
May 8, 2011
A form I created, was able to modify and shows when the program is run has suddenly changed in the solution explorer. Now when the form "MainMenu.vb" is highlighted in the solution explorer the icon for "view designer" vanishes from the toolbar. The "view code" shows "MainMenu.vb" but there is not any code there and only an empty "General" and "Declarations" show. The icon to the left of the "MainMenu.vb" is like a module icon not a form icon.
View 5 Replies
Jan 4, 2012
I'm developing Applications in VB.NET 2008.
I have MDI Parent Form and i'm going load all form as MDI child. Here i'm going to give option to "Close All" toolstripbutton in top of MDI Parent to close All mdi child forms.
Now i would like to check that On click of Close All Toolstripbutton , i have to close all mdi child form but except those form is on process, example, I have opened/Loaded 5 MDI child forms within MDI Parent Form.
Child forms are ( just for example ) ,
1. Customer details Form
2. Item Details Form
3. Import Orders Form
4. Stock Details Form
5. Production Entry Form
Here 3.Import Orders form is importing from Excel with 5000 records and 4. Stock details form exporting to excel.
So now if i click "Close All" button then i have close only Idle form i.e 1,2 and 5 but i should not close 3 and 4 since its on some process.
So Is there any .NET option to check that form in process/idle or do I have to check manually by having any Flags ?
View 1 Replies
Jul 4, 2011
I have a situation with an application of mine where I noticed I get a different result when the application is installed in comparison to it running in Visual Studio. If the application is installed a certain aberration pops up in this computer graphics application at a certain point in one of the screens but if I run the same group of settings or you could say the same "screen" running the application from Visual Studio I don't see the aberration ever happen. I tried deleting the bin and obj folders and then rebuilding before creating an installation and it doesn't change anything and whether I use InstallShield or create an installation using ClickOnce I still see the same issue. I have Enable application framework unchecked but found it makes no difference checked or unchecked
View 9 Replies
Nov 14, 2009
I am getting this exception: Cross-thread operation not valid: Control 'TextBoxOutput' accessed from a thread other than the thread it was created on. in a VB 2008 Windows Forms application that I havent specifically made multi-threaded. I have create a sub called Out() like this:
Private Sub Out(ByVal inString As String)
Me.TextBoxOutput.Text += (Me.TextBoxOutput.Text & inString & vbNewLine)
Me.TextBoxOutput.SelectionStart = Me.TextBoxOutput.Text.Length
Me.TextBoxOutput.ScrollToCaret()
End Sub
and I call it from various events to log messages I am getting from my pbx, which I use a third party open source dll to access. The interesting thing to me is that if I run the deployed application (ie, not in the VS IDE) I do not get any exceptions, it's only from within the IDE.if I add the line: Control.CheckForIllegalCrossThreadCalls = False to the form's constructor, the exceptions stop, but a) this seems like a hacky way to get around the issue and b) the application seems to hang sometimes when I have it set this way.
View 2 Replies
Jun 2, 2009
Is it possible to have an application where form1 opens a second modal form (form2) and then allows the user to minimized form2 causing the entire application to minimize to the taskbar.(form2 is never shown in the taskbar) A simple example of this is winzip where a second modal progress window is opened which can be minimized?
View 10 Replies
Feb 25, 2011
I have a parent form (form1), which is calling a second form (form2) as modal.[code]...
No form2 is modal. Closing this form2 from the form itself is clear.But how can I close the form via myform2.close from form1 via an event handler?
View 6 Replies
May 20, 2010
I have a large VB.Net 2008 rich client database app and in it some screens take a bit to load, 1 - 5 seconds and two of them take up to 15 seconds. Right now I have a me.hide in my form load, I do my loading of drop downs and data, then do a me.show. It works decent and gives the impression that the program is quick. What I would like to do however is have a "waiting" or "loading" screen with a animated gif pop up while it's doing its data loads.
So I created a "WaitingForm" that has no border and a single picture box. In the form load of this waiting form it assigns a animated gif to the picture box. I set the form to be top most, no control box, etc.
If I call this waiting from from within my from load events as WaitingForm.show the animation doesn't work and the form only half shows (and in the wrong place on the screen). If I call this form using a WaitingForm.ShowDialog it correctly shows in the center of it's parent and displays the animated icon BUT blocks the calling form from processing and defeats the entire purpose.
How do I display the waiting form like it's a dialog box so it correct centers on it's parent and displays correctly but doesn't block the lower form from processing? Currently when I call the waiting form I give it a integer for how many seconds to display and then a timer on the waiting form counts down and closes itself. Do I need to use a worker thread and if so what is the easiest way to do this so the code is reusable from multiple different screens?
View 14 Replies
Apr 4, 2011
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
With Me.PrintForm1
[Code]....
View 6 Replies
Jul 21, 2009
Is there a way to specify what forms are Locked when opening a Modal Dialog? I want to have a specific form available even if a Modal dialog is opened. The form in question is a child form (Accessible from the Windows application bar), that is created from the main application form. The Modal Dialog should only lock the main application form, and not the secondary window. Is it possible to make a secondary form independent from the main application form?
View 1 Replies
Jun 26, 2009
Windows Vista SP1 Internet Explorer 8 .NET 3.5 Visual Studio 2008 I have written a UserControl with VB.net that is embedded within a web page. The web-page also includes several iframes containing other interfaces.
One of the pages is defined to auto-refresh every 10 minutes (to keep a session object open on the web server). When the UserControl is displaying its main interface, the refresh in the IFRAME fires and updates OK. However, if I open a dialog (using the ShowDialog method) the refresh still fires OK but the IFRAME does not update until the dialog is closed. Presumably, this is because the dialog is Modal.
What I'd like to know is if there is any method of yielding events within the modal dialog that would allow the IFRAME within IE to update?
I tried adding a timer to the dialog and calling Application.DoEvents every few minutes but this did not appear to work. Not found any info on the net either.I don't really wan't to go down the route of creating some sort of semi-modal dialog class (i've yet to find one in the default .NET API - is there one?) as it would mean a lot of re-work so before I go down that route I thought I'd see if anyone can think of a alternative solution.
View 3 Replies
Jul 1, 2011
When shutting down a Windows XP system, it displays a modal dialog box while the background fades to a grayscale. I will like to achieve the same effect in any of the programming languages in the tag list.
View 1 Replies
Apr 19, 2009
If I type this code (VB.net 2003):
Dim myDialog As frmTestDialog
myDialog = New frmTestDialog
myDialog.Show()
you'd expect some dialog window to appear in a non-modal state. For some reason, this isn't the case with a program I am working on. Most of the dialogs use ShowDialog() to open them, and one uses Show(). The second I try to show another non-modal dialog, the dialog appears in a modal state. Another strange thing is, before I show the dialog, there is code to shift the dialog location to centre it on the main form - this isn't executed either: the dialog appears at 0,0.
My usual trend is to blame myself for errors (usually the case), then I blame the software; I have checked every single line of code (including the generated code), and it all checks out - the dialog should be non-modal. But ... it's not. I've come across other errors in VB.net 2003; is this another instance?
I'll try creating a new dialog and displaying this non-modal, and see what happens. If it works, I can just transplant the code but this shouldn't be happening, just like if I go to a shop, ask for a cola, I expect a cola not a Chinese panda; more annoying, I return the panda, ask for a cola, and they give me the panda back do loop until I give up The system does using threading, but none of that code connects to the display dialog routines all dialogs are opened with more-or-less the above code (a few have simple validation routines).
View 5 Replies
Apr 22, 2011
I need to open a page as a Modal Dialog using Jquery .For Example: I have 2 pages say, Parent.aspx & Child.aspx, I need to open child.aspx in a modal dialog using JQuery when i click on a button/link in the parent.aspx. Also Postback can happen in the parent and child pages.
View 5 Replies
Oct 8, 2009
how to close application root folder or sub root folder at the time when application is in running mode?
View 7 Replies
