Application Hangs When OpenFileDialog = Windows.Forms.DialogResult?
May 19, 2010Private
Sub Button1_Click(ByVal
sender As
Object,
[code]....
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OpenFileDialog Hangs Used Once?
May 26, 2012ApplicationName has stopped workingA problem caused the program to stop working correctly.Windows will close the program and notify you if a solution is available.
Here is my code:
Private Sub OpenFile()
Dim OpenFileDialog As New OpenFileDialog
[code].....
Thread.join() Hangs Sometime Windows Application?
May 31, 2012I am developing windows based video application, in my application I have to make multiple video files with different duration from a single video file. To achieve this I am using thread.join method(), when I run my application it works fine but sometimes it hangs and I have got to close my application using Task manager, I can't understand why my application behave like this?.
This generally happens when number of output files are more than 40. Is there any problem with thread.join() function, when number of threads are increased. I am generating a new thread for each output file because this is the limitation of the third party dll which I am using.
OpenFileDialog.ShowDialog() Hangs When Used In An Installer Class Windows7 And Vista
Dec 17, 2009I have an installer class that presents a form to the user. One of the functions of the form is to browse to a file using the open file dialog. This form functions fine when used in an application but hangs when calling OpenFileDialog.ShowDialog() during an installation on a Windows7 or Vista machine (Windows XP it works as expected). I get the same rusult when 'run as administrator' and with UAC off. I also get the same results when calling SaveFileDialog.ShowDialog() in the same context. The call doesn't throw an exception but causes the form to stop responding. Any suggestions on how to get this to work correctly?
View 6 RepliesBasic Application(windows Forms) Doesn't Exit Properly After Navigating Through Forms
Jul 9, 2010I have a basic three form application. It doesn't seem to close after navigating through forms. If I were to open the application, and the main form is displayed. If I press the X button, the application closes fine(Goes from processes) If I were to open the application, and then navigate from the main form to another form using me.hide & form1.show, and press the red X on Form1, the application again, closes fine.
[Code]...
Application That Has Multiple Front Ends Developed Using Windows Forms / WPF / ASP / Compact Framework Mobile Forms
Apr 9, 2010I have the requirement to create an application that has multiple front ends developed using Windows Forms, WPF, ASP and Compact Framework Mobile Forms.I would like to be able to create a series of obejct representing the business logic and have this logic accessible from the various front ends available. My first thought was to use remoting as I'd like to be able to pass the business objects back and forth between client and server but the compact framework doesn't support remoting and also transferring a full framework business object to a compact framework business object doesn't seem possible.My next thought was to use web services but again the passing of business objects seems to be very hard to accomplish. Without doing this I would have to create individual web methods for each business operation.
Finally my next option is to use sockets and write the whole client/server logic within some classes and expose them to the UI/Business layer. My only problem with this is it is not scaleable should the number of clients increase dramatically whereas using remoting or web services I can host the solution via ASP.Net.Does anybody have an ideas on the best way forward for this or even have any input on how they would write an application that required a windows form, wpf, asp website and mobile device GUI all of which want to use the same business logic?
Code Works In A Windows Forms Application, But Not In A Windows Service
Jan 19, 2010I'm porting code that I wrote for use in a Windows Forms application to a Windows Service, but for some reason, the code that worked in the Windows Forms application is now throwing errors in the Service
View 7 RepliesForms :: Disabling BackGround In Windows Application Same As Windows Cardspace
Sep 24, 2010I am making a System Tray Application when i minimize my form its hide itself in the tray but whenever i click on the tray icon my form shows now when my form shows up i would like to disable my Background desktop same as CardSpace when its shows up.
View 1 RepliesApplication Does Not Return From Call To System.Windows.Forms.Application.DoEvents?
Aug 2, 2011I have a windows forms application written in VB.NET which scrapes information from serveral web pages (who doesn't right)? Anyway, I am having problem with one particular site where partway through the page navigation my application hangs. When I press pause (or break) in the debugger, it stops on a call to System.Windows.Forms.Application.DoEvents.
Resuming execution shows that it really is stuck on this line (it does not reach the next line of code). It also hangs about the same point each time I run it (at least its consistent). Since System.Windows.Forms.Application.DoEvents yields to other threads on the same processor and then resumes execution of the current thread, I think the problem is that some other thread is not behaving well (not returning from some event handling code). I thought Windows 7 was pre-emptive, which makes me
doubt that theory but I really don't know.
[Code]...
The program scrapes somewhere between 12 and 14 pages before it gets stuck on the call to DoEvents. Does anyone have a clue why this would happen? Why would any call to DoEvents hang?
Re-direct Output From A Console Application To A Textbox In A Windows Forms Application?
Sep 14, 2010I am trying to use the System.Diagnostics.Process class.I have the following Windows Forms application. It consists of 1 Button and 1 TextBox. The only code is for the button click event as follows.
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim myProcess As New Process()
[code]....
Convert A VB2008 Console Application To Windows Forms Application
Feb 7, 2010I have a fully functional multi-threaded VB2008 console application that I need to convert to a windows forms application. I am doing this to add additional functionality at a later time. How would I go about doing this?
View 9 RepliesConverting MS ACCESS Application To Windows Forms Application
Jun 23, 2010My boss gave me an MS Access application that was developed by our former colleague. He wants me to convert that application to VB.Net Windows form application. I went through the MS Access Application. It contains tables, queries, forms, reports and macros. I could not find the programming (Where is the code written in MS Access?). My boss wants the windows application to be same as the MS Access Application (both in design and logic). I don't how will i develop the windows form. How can I achieve this?
View 2 RepliesConverting MS ACCESS Application To Windows Forms Application?
Jun 23, 2010My boss gave me an MS Access application that was developed by our former colleague. He wants me to convert that application to VB.Net Windows form application. I went through the MS Access Application. It contains tables, queries, forms, reports and macros. I could not find the programming (Where is the code written in MS Access?). My boss wants the windows application to be same as the MS Access Application (both in design and logic). I don't how will i develop the windows form.
View 4 RepliesCommunications :: Windows Form Hangs Or Freezes How Come?
Jan 9, 2011I put this Code into a module and try to call it to start the Server side of the the applaction there also a Client but the Server side is done in a Console app but when i try to do it in a Windows Form it hangs once called to start listening. [code] i found this code on the internet that i was just playing with. its pretty neat but i cant figure out the program of the Windows form hanging issue.
View 1 RepliesWindows Services Hangs Or Is Stuck At Line
Oct 14, 2010I'm trying to Debug and code an program in VB.net 2005 in windows XP. When I start my service and attach it for debugging it hangs at the line:System. ServiceProcess.ServiceBase. Run(ServicesToRun)The service says it is started under windows service dialog, but does not go further in the code, it just sits there..Does anyone have any solutions to this problem? I had this problem before but it usually start after a few moments,it seemed to get progresively worst, were now it doesn't progress at all, and just stays hung. [code]
View 6 Replies.NET Application Hangs When Calling DLL
Dec 28, 2010 Its been running in production for over a year and this is the first time I saw this behaviour. The application is a VB.NET Console Application which is triggered by MQ server. This application uses a class library which is part of the same project(Say 'abc.dll'). In production around 40+ instances of this exe are running and all of them use the some of the functions from 'abc.dll'.
Last week, we noticed that all the 40 instances were shown to be running in the task manager but they were not doing any activity. There was no exception thrown or error logged in Application logs or System logs. To frantically debug the problem, I tried isolating the problem.
With all these 40+ exes hung up, I wrote a small aplication which would use a reference to this 'a.dll', create an object of one of the classes in that dll and execute a method in there. I was printing console.writelines in between to see to which point it gets to before erroring out.
To my surprise, I found that at the point where I was creating an object of a class in 'a.dll' this sample test application would also hang just like the others. No exceptions thrown. So I killed all those applications as a last resort and then when I restarted all of them, everything worked fine.
I couldn't find any explanation for this behaviour. Since it was a critical error affecting a production system(blanking out the application for 3+ hours), I have to give a very good explanation as to why this would occur. how it can be prevented in future.
(Side note: the servers running these appilcation do not have a maintenance schedule and are supposed to be up for couple of months together.
VB 2008 Application Hangs?
Mar 6, 2011I am writing my first application in Visual Basic Express 2008 and the program conistently hangs (Not responding in the Task Manager) midway through execution. The operating system is Windows XP Professional SP3 running on a 1.20 GHz Intel Core Duo CPU with 2 GB of RAM.
The application has very deep layers of subroutines and functions, all of which are using lots of math routines. There are no recursive routines anywhere in the program. The program creates and destroys quite a few class elements, and I have written dispose methods for all of them using IDisposable, setting all the properties to Nothing. I also use GC.Collect() to force garbide collection, and GC.WaitForPendingFinalizers(). As a result, I don't think there are any memory leaks.
I think the depth of sub and function calls are causing a stack overflow, but I'm not certain. I have tried without success to increase the stack allocation to 2 Mb using Editbin.exe after reading some forums, but nothing changed. I then searched my machine and did not find EDITBIN.EXE.When the program hangs up, the background of the forms on the screen turn to solid white and the controls are no longer visible.It looks like a window pops up but it disappears too quickly to read anything. If I view the task manager while the application is running it hangs immediately. I have not published it, I am still developing and running it out of the VB environment.The more complexity (sub and function calls) I add, the earlier the program hangs.
.net - Best Use Of System.Windows.Forms.Application.Run()?
May 18, 2010i Have a programa that has starts in a main sub, it executes some code and after that code it opens a form using
System.Windows.Forms.Application.Run(General)
General is a form but also a class, so I wonder what it the pros or cons of using :
System.Windows.Forms.Application.Run(General)
vs
Dim gen as general
System.Windows.Forms.Application.Run(gen)
In the first I am opening a form using the name of the class, and I read that it is best to declare the instance as an object variable.
C# - Use Authentication In 'Forms' And As Well In 'Windows' For A .net Web Application?
May 14, 2011We have an application in Access for UI and MS Sql server as Database server. We now decided to build a new application in web application for UI. This web application is only used by the employees who work for the company. But later we decided to host this web application on outside server. So the user (from this company only.) can able to login anywhere in the world. First I thought creating the web application using 'windows' authentication thinking we may be using it as an intranet web application. But now my manager asked me to use both 'Forms' and as well as 'Windows' for using this application and this web application will be hosted on outside server. I really don't catch his point of using both types of authentication.
View 1 RepliesIDE :: Windows Forms And Console Application Together?
Aug 4, 2011Could i Create a windows forms application that would have a console application form I'll use an example: say i was creating an application that would need some text written in the command line. i create the windows forms application because i want a GUI for the start page. then when i click a button, it should open a console program that is inside the windows forms application (not a seperate project)
View 7 RepliesUse Dll Component In Windows Forms Application?
Oct 17, 2009Public Class NAND
Private inputA As Integer
Private inputB As Integer
Private outputQ As Integer
[Code].....
I have this code and I hope that this is correct. I build a dll component from the class file that contains this code and I am trying to use it as a reference in windows forms application. I have allready made this forms application and added the ddl to the reference but I do not know how to use it in there. I would like to activate (insert value 1) inputA & inputB using checkbox and that the outputQ is displayed in textbox (1 or 0). Do I have to use a vb interface to do this? And how can I use this code as dll component in the forms application?
.Net Application Hangs If Lock System
Jun 21, 2010I have a weired problem. I developed a multithreaded WinForm application using VB.Net, and SQL Server 2008. The application works perfectly fine if I am using Visual Studio IDE to run the same. But, if I run the exe file created by VS the application hangs in case I lock my system and again relogin. The memory usage is same as it was before locking the system. CPU usage is also 0% or by max 2%. All threads are also exited after finishing there designated tasks.The application also uses threading but all threads are exited after there designated tasks. I confirmed this using various tools.[code]
View 5 Replies.Net Application Hangs When Added On Startup?
May 5, 2011I have created a small multithreaded application using VB.NET. There is no problem when the user manually runs this application. A problem exists when I added this application on startup. It hangs after I rebooted the system. The application is still running its thread but I can't see its GUI because its frozen. If I kill it on task manager and started again, the application works fine. What could be the possible reason/s why this application hangs when added on startup?
Imports System.Threading
Public Class USBLock
Public Event Lock()
[Code]....
or just a thought on this subject: the reason why the program hangs on startup is because the application is loaded while the .net framework service has not yet started.
Application Form Hangs But It Is Working
Apr 21, 2011I have win7 pro, on my win form is a traffic light icon(when it starts it is red, when finished it is green), so that I know when job is finished. But when I run application icon isn't changing and form hangs it self, can not do nothing until job is finished. Only in the end, I see that icon is quickly changes to red and then back to green.
View 1 RepliesApplication Hangs On Call To Doevents?
Dec 22, 2010I am re-posing this question because the prior post has gotten really full of side issues so I fear the main problems has been lost.I have a windows forms application written in VB.NET which scrapes information from serveral web pages? I am having problem with one particular site where partway through the page navigation my application hangs. When I press pause (or break) in the debugger, it stops on a call to System.Windows.Forms.Application.DoEvents.
View 7 Replies.net - Choosing The Fonts For Windows Forms Application?
Jul 8, 2009I'm trying to design a windows form application. By default, .NET had put Tahome 8,25 on toolbar and Microsoft SansSerif 8,25 on everything else. To improve general look and feel of the forms I'd like to change them.
Which font family should I use as a default? And what size should they be?
For:
Classic data input form (label + textbox, label + combobox...)
Data grid
Is there any recommended way?
Application is a classic business app, you can think of it as an accounting type.
.net - Writing Windows Forms Application Using CodeDom?
Mar 24, 2012How can you write a VB.NET Windows Forms Application via CodeDom? I have tried everything, the closest i got to it is the code below, which first of all shows command prompt window which is not good, and then shows the form for like a second and everything disappears.
[Code]...
.net 2010 Windows Forms Application Hanging?
Oct 12, 2010I have a windows forms app (32 bit) written in VB2010 which occassionally hangs in windows when minimised to the task bar You click on the icon on the taskbar and it will not come back up on the screen
No other modal forms are open in the application when the hang occurs Other programs respond OK
I ran Process Explorer against when it was Hung but do not know how to interpret the stack page, or even if it is helpful STack page with my application selected and Threads tab selected with CSwitch Delta column sorted descending. Then double clicking the top entry (my application .exe)
Note: This is running on an x64 machine, but also hangs on x32 machines
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Add Scripting Capabilities To Windows Forms Application?
Dec 8, 2010I want to allow the user to write a little script (JScript, VB, whatever) with a function called by my application that returns an XmlDocument object (a string would be ok).I did some research, and it looks like the scripting engines are obsolete.
The best solution I could find is here: [URL]..But I was wondering if there is a better and more "official" way.
C# - Sending Emails From A Windows Forms Application?
Jun 7, 2012I'm building a windows forms application that's supposed to run on a remote/isolated machine and send error notifications by email to the admins. I've tried employing System.Net.Mail classes to achieve this but I'm running into a strange problem:
1. I get an error message:
System.IO.IOException: Unable to read data from the transport connection:
An existing connection was forcibly closed by the remote host.--->
System.Net.Sockets.SocketException: An existing connection was forcibly closed by
the remote host at System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset,
[code]....
