'abort' (terminate Immediately) A Form Screen In A Windows Form Application Running Under 'local' Environment?
May 30, 2012
FormA calls DialogB where user cancels DialogB which exits via ForceTermination(), see insert.Caller FormA check for DialogResult not = OK, which it isn't, and I can see this in debug as Abort(3).However, the code continues merrily along its way until I get a 'null reference' error which I'm trying to avoid via Force Termination().This is caused by the user cancelling DialogB, a selection process to get a database (SQL) instance.[code]
I have just built a full main menu for my pc game and need to terminate the running program using a button held within the form. I have built a button labeled exit and tried a couple of closing codes such as: Me.Close ExitApplication
I have seen this happen before but am not sure how I resolved it in the past. On runtime the controls of my form change from the windows 7/vista format to an older version format as shown in the attached image.
How to display the controls in the format on the left (new windows format)
I have a simple GUI form to hide / show / minimize / terminate / force terminate Processes. i can do all well but for show and hide i need the MainWindowHandle to show or hide it
So here is hide process code:
Dim Proc As New Process = Process.GetProcessesById(List.SelectedRows(0).Cells(1)) Dim hwnd = Proc.MainWindowHandle ShowWindow(hwnd,0)
If i try the same with show code:
Dim Proc As New Process = Process.GetProcessesById(List.SelectedRows(0).Cells(1)) Dim hwnd = Proc.MainWindowHandle ShowWindow(hwnd,9)
The MainWindowHandle become 0 cuz its hidden is there is any other way to get the MainWindowHandle of Process ?
I am trying to end a program immediately when a critical exception is caught. But I am finding that code after my Try/Catch block is executing even though the code withing the Catch block is executing, and that Catch code is calling Me.Close.
I suspect it has something to do with background .net threads or something, but I have no clue how to deal with those kinds of issues. How can I stop the program as quickly as possible? If code after my Catch executes, it will (and does) throw lots of uncaught exceptions later. Currently, it is not feasible for me to try to catch all the other exceptions. I just want to report an error and end the program.In my form load routine, I create and set up a number of objects and arrays by calling various subroutines.The success of most of the subroutines depends on the sucess of three subs in particular, which are called early on. If one of those three fails, there will undoubtedly be a number of hard to trap exceptions later on in the load routine.
one general question about 32-bit application running in 64-bit environment Our application is developed in VB.Net depends on .NET Framework 2.0 Service Pack 1 Microsoft Visual C++ 2005 SP1 Redistributable Package All application components are compiled to 32-bit application, such that run in WoW64 of 64-bit Windows Server 2003 without any modification.
im trying to terminate a threading.thread using thread.abort the thread runs a download connection so is usually in the middle of socket.recieve or socket.send or socket.connect when aborting i just want to terminate the thread no matter what thread.abort raises an MDA excpetion. so i ticked it off in the debug exceptions menu. now it doesnt raise an exception, but the thread simply wont terminate. my program wont close unless i press top in the debugger.i cant pause downloads because i cant terminate the thread this code wasn't working?
Dim vT As Threading.Thread For Each vT In clsDownloader.DownloadThreads If Not vT Is Nothing Then vT.Abort()
[code].....
as for the exception concerning threads being aborted from other threads being dangerous, how is it possible to send a message from a main thread to another thread to abort itself? as far as i know the only way to a abort one thread from another is to just kill it (because i dont know of ways for a thread to communicate with another).
I am developing windows form application on my laptop....but running my project on Desktop or laptop becomes different looks.how do i make it to be the same no matter the screen resolutions? i just need my project look same in all small or big screen resolutions.
I have a windows form with nothing more than 4 picture boxes on there and a button. How (if even possible) can I show this page in full screen mode but at the same time allow each control on the form to format and resize in proportion.The best analogy I can give to describe what I want is when thinking about PowerPoint. When you create a slide and then press the F5 button to go into slideshow mode, no matter what size monitor or resolution you use, it always fills up the screen appropriately.
I have an application that contains a MDI Form as the main screen. In the text field of the form, I am trying to display the version of the application using the following syntax:[code]Using the above code, it always looks like 1.0.0.0 when in reality I'm on version 1.0.0.6. What am I doing wrong?
I'm writing a simple paint program in VB 2008 that allows the user to create rectangles using MouseDown event to anchor one corner, MouseMove to stretch (or grow) the rectangle, then MouseUp event to complete the rectangle.The last statement in the MouseDown event is Me.Invalidate() to trigger the form's paint event where all the rectangles are drawn (refreshed).
I have my form checked if it's dirty when a user goes to close it. If its dirty is true, the user is asked if they would like to save the data. When they click yes, the 'save event' is called. The problem I'm having is trying to get the form to completly close after saving. At the end of the save I put in me.close(), but another form closing event is triggered. Is this the correct way to dictate having the form close immediately after saving the data or is there a better way? If it is, I must have it placed in the wrong part of my code. Immediately after the "success" dialog box is displayed, I am asked if I want to save the data again.
I have a windows forms application built in VS2005 and migrated to VS2008 that I "inherited" that occasionally will not show some of the objects (i.e. a button or something) when a user runs it. This is sporadic and does not seem to have any notable pattern.Are there any specific types of things I should be looking for that might cause such behavior? I tried looking at available memory and hard disk space issues and that did not seem to have any bearing on the problem.
I want to resize font of all windows form control when i change screen resolution..I am able to resize all the controls but font resize driving me nuts..
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]
I have created a splash screen and it fades in. When the splash screen closes, the main form (MDI) should open. The main form opens but then immediately closes. vb Public Class frmSplash Private Sub frmSplash_FormClosing(ByVal sender As Object, _ ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing 'Open the MDI form. frmMain.Show() End Sub [Code] .....
i want to which way is better when concentration is on processing speed. i want to call a method that compute some data that method is on another form in my windows form application then what you prefer is better way 1) to call that method in another form and use returned value or create similar method in form where it is required.i want to make it's processing fast.
Using Visual Basic 2008 Express Edition.Note: Program is to be used with Touch Screen. (No keyboard or mouse)TODO: Get Log in form to allow the input of values from clicking on Buttons 1 thru 0.*,# '1. So far Buttons on Log in form allow one entry only. Form needs to allow 9 entries. 2. When Clear button is clicked. Password box entry clears, but then, there is no Cursor.Will worry about the rest (authentication) Later its taken two weeks to get this far.NOTE: Not using a User Name Just a Password
i am doing project of Order Accepting system for five star hotels.Scenario is Waiter will accept order using Window Mobile which is Connected to WiFi present in hotel.I want to communicate to database(Sql Server) present on My Machine (Computer present in kitchen) through WiFi and Add order into table present inside database. This should notify my application present on Compter and should print order. After completion of Order Application from kitchen will notify to waiter about completion. My problem is How to Communicate with database present on Remote computer using WiFi from windows Mobile.
To create splash screen before InitializeComponent, the WithEvents statement for the BackgroundWorker component needs to be moved from the Form's Designer.vb file into the constructor as indicated in the first commented lines of the constructor below.
Is it possible to reload a form of the running application from one computer when I executed a function from my other computer with the same application? co'z I want to see the changes of data on my datagrid view?
Within my Visual Studio 2008 VB.Net project I am opening multiple forms after setting the form (that is opening) to be an mdichild of the main form. This works in really well in most of my forms except one. I am doing the exact same thing for all of them.
Basically I declare the new form:
Using frm As New frmName() With {.variableName = currentVariable} frm.MdiParent = Me.MdiParent frm.openForm() End Using
Within the openForm subroutine in the form code I have:
Public Sub openForm() InitializeDataSources() ... ... Me.Show() End Sub
I know this works because if I remove frm.MdiParent = Me.MdiParent in the main form and change Me.Show() to Me.ShowDialog() in the child form then it works perfectly. Right now (for only one form) it shows the form for only a second (looks like a flicker when staring at the program) and then closes it.
Hi.. Im using an application to capture selected part of screen by resizing the form and capturing area of it!! now i want to reset the form once my work id done!! i mean if i press a "RESET" button the form should be load as first time it was loaded.(the real form size..)
