Reopen A File Immediately After It Closes Via My C# Application
May 18, 2012
I ran out of ideas and couldn't find any reference about it so here I go... I need to keep a secondary application wich is not related to my c# project always running in background. So if this secondary application crashes or someone else close it manually it will automatically re launch again via my c# app.
I have no clue of how to accomplish this one, I mean checking if this application closes by something external to my c# app.
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Feb 19, 2010
I have a VB program that displays a PDF file. When the program is closed it takes 30 seconds or so before AcroRd32 process releases the PDF file. In certain circumstances if the program is restarted with in this period, the PDF file does not display. The specific circumstances is that I have a second program (re)starting the program that displays the PDF file.
a) Make the PDF file be immediately released when my program closes
b) When the PDF file is loaded test that it properly loaded so that it can be reloaded if necessary.
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Jan 13, 2011
I have an issue with VS 2008 datagridview combobox control.
The combo box in question closes immediately after the CellValidation method that I wrote invalidates the input in the combo box cell. What I mean by closes immediately is that when the drop down arrow is left-clicked, once I remove my finger from the left clicking of the mouse instead of staying down so that the user can see the selection options the combo box just closes.
I'm currently using EditOnEnter as my EditMode style. (I've tried switching between the different option the same behavior exists). The datagridview is bound to a dataset which was created from my database in MS Sql Server 2005.
This problem exists on two different forms and occurs exactly the same way. I don't know what other settings to mention to help in the troubleshooting of this error, but please feel free to ask me any questions so that I may resolve this issue. By the way both forms use datagridviews tied to the same dataset, just different tables and table adapters.
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Apr 17, 2010
i am trying to make a app that loads a keyboardhook from a module on startup,
but unless i load the keyhook from the form the app just closes immediately.
i uploaded the keyhook module, to test it just start a new project, add the module,
to test it loading from the form just put hookkeyboard in the form load,
but what im tyring to do is have the module load first, so set the start up object to sub main
what this is suppose to do right now is just send a msgbox on every keystroke, it works from the form load but fails when loading from module, unless i am always typing something.
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Apr 17, 2010
i am trying to make a app that loads a keyboardhook from a module on startup, but the problem i am having is unless i load the keyhook from the form, the app just closes immediately.
what im trying to accomplish in the end is the module will will check a 'user settings' file, depending on the settings it will show a form or load the keyhook. but this is where my problem is, if i set the keyboardhook to load from the sub main in the module the app will just close immediately unless (as far as i can tell) i am always typing something
if i set it to load from the form it stays open, ive tried creating a second module and loading the keyhook from their but it still closes i uploaded a copy of the keyhook module if anyone want to test it / check out the code... all it does right now is pop up a msgbox on every keystoke, for testing purposes,
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Mar 29, 2011
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.
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Mar 28, 2010
I created an app and what it does is takes a screenshot of your desktop, saves it, then uploads it to ftp. After that it closes. What i need it to do is continuously do that via what ever the interval is set to. So if the timer1 interval is at 12000 then i need to to take a screenshot and upload it every 12 seconds. Can someone tell me why is keeps closing after it uploads the 1st screenshot? [code]...
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Sep 28, 2011
I have a vb.net application that opens two workbooks excel, if I close the excel file and try to reopen them is still an error:"COM object that has been separated from its underlyng RWC cannot be used".
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Jul 25, 2011
I've deployed an application inside a corporate network and I want the update process to require less attention from users. Giving them a choice to update is not a porogative.I've written code to detect when new updates are available automatically rather than letting ClickOnce check on application start. I'm wondering if its necessary to restart the app after the update has completed. Currently I invoke at the end of my update script:Application.Restart()
But what if (to make the update process more transparent for the user), I performed a 'silent' update in the background on a separate thread, and then displayed an icon prompting the user to restart the app to apply the changes? Would it work this way?
Furthermore, if I ran my custom InstallUpdate() process on a timer, say every 2 hours, would ClickOnce be happy to continue to update for every new version that was released even thought the user has not restarted (and I'm expecting the updates only to apply once the user restarts the app)?
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Nov 1, 2009
I submitted the same question a few minutes ago, but so far that hasn't appeared in the thread - I wonder why/ - I used the HTML to rite the code I used. When I Click the F5 / Strat Debug on menu the DOS-Based form appears and disappears immediately. I am able to run a DOS-Based program in the computer, I checked this after the Sample Console Application failed to run. The Code I used is given within the Brackets(System.Console.WriteLine("Hello World")).
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Apr 9, 2012
I have a small problem with sockets (I'm new to sockets). Below is the code I'm using. The problem is that when the client closes, the server closes aswell. How do I stop it from doing that?
[Code]...
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Nov 15, 2011
I've been looking around the internet and I haven't really found any solution to my problem. Is there a way to perform a function when a user closes the form either by pressing the X button in the top right hand corner? I am using a database that saves what form the user is currently looking at, and when the application is closed I want to say "offline."
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Apr 6, 2009
I have a problem here I hope someone can help me out. I have this application in which I show information about workplans. It has a Main Form which show the general information and the activites that are going to take place during the execution.
The application has the ability to "attach" documents to the activities. I have created another form (and MDI form) that I use to show the documents (pdfs) when a user clicks on one of the documents attached. The problem is that when I close the form that shows the documents, it ends the application and I don't know why. It should just close and leave me again with the Main Form. Can someone tell me why is this form terminating the app. Is it because is MDI or what?
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Apr 22, 2009
I want to retain a value in a variable even after the application closes so the next time i open the application i can get that value.It's actually an integer value, i want to count the no. of times the application has been opened. I tried using static [b] but it doesnt work.
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Oct 27, 2010
I need to update a table when my application closes. This is with the user name of the person exiting the app.
This works fine when the user closes the form from the main menu exit button where I have written code to update the table. However if a user exits from another form the main form is not closed (as I thought it would be) and the code that updates the table consequently does not run.
I have tried entering on other forms under the FormClosing event but this does not seem to run if they click the X in the corner of the form.
How can I get that code to run when a user exits in some other way.
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Aug 16, 2011
I've made a Windows Forms Application that runs fine. It has some buttons that open child forms, which can simply close again without any problem. As I need the form to be in a dll, I changed the application type to a class library and added an extra project containing an exe-file that only references the main form in the dll and shows it. So far so good...
The main form is basically a tabcontrol with a bunch of controls, buttons among others. Five buttons on different tabs use the same handler to open a child form. When I click the button on the first tab everything works fine. The form opens and when it closes, only the child closes. When I click any of the buttons on the other tabs, the child form opens and when it closes again, both the child and the main form close...
I am stumped, especially since all buttons use the same code to open the child form and everything appears to be completely identical, yet the results are not. Below I have pasted the code that opens the main and child forms. I am undoubtedly not looking in the right place, but I also have no idea where to look anymore, let alone what to look for...
The code opening the main form:
Public Sub StartProgram()
'Load the form and show it
Dim frmProgram As frmMain = New frmMain
[Code].....
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Nov 6, 2009
I published my ap, and installed it on my pc. Now, I run it and it works great, however when I close it the .exe doesn't end...
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Feb 26, 2012
Is there an easy way to disable all form validation when the user clicks on the "X" icon to close an application or when the user clicks on a button in the application that closes the application?[url]...
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Mar 6, 2012
I have a parent form and a few subforms. When the user clicks the red X to close the form I have a dialog box open that asks the user if he wants to exit the application. I have a issue when the user clicks no the application closes anyway. I am wondering what I am doing wrong. [Code]
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Mar 18, 2009
I'm creating a PDF file on the fly using ITextSharp and ASP.NET 1.1. My process is as follows -
Create file on server Redirect browser to newly created PDF file so it is displayed to user
What I'd like to do is delete the PDF from the server as soon it is displayed in the users browser. The PDF file is large so it is not an option to hold it in memory, an initial write to the server is required. I'm currently using a solution that periodically polls for files then deletes them, but I'd prefer a solution that deletes the file immediately after it has been downloaded to the client machine. Is there a way to do this?
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Feb 3, 2012
I have searched, but failed to find a suitable answer to this. My small app saves a text file using a savefiledialog and stream writer. Then if successful, displays a messagebox confirming sucess and asks if the user wants to open the text file now. and this is the problem... How do I determine if the user has changed the filename and or path in the savefiledialog when saving? I'd prefer not to hard code a path and file name if possible.... but that seems like the only option? and therefore I can't show the file straight after saving reliably??
[Code]...
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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]
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Feb 23, 2012
How can I reuse(reopen) same Datareader after calling Close() ??
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Apr 7, 2011
Why my database always reset and what i had enter to the database using my application will be erased.if i dont close the application. the data will stay.
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Jun 21, 2010
Constant monitor for process, if process not running execute this()
VB.NET
Imports System.Runtime.InteropServices
Imports System.Diagnostics
Public Class Form1
[Code]......
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Jul 3, 2010
This question only applies to files of line-terminated/text strings.[code]I suspect that ultimately, I will generate the myfiles version of the HD file as I write it to disk,but at this point in my VB.net 'skills', until I can prove what I've written by reading it back and having control of it in my program, I can't assume anything about the data/format/file that I have written.
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Dec 22, 2010
When my application first loads the parent opens and I select my child form from toolstrip:
'In parent open the form when option is clicked
Public Sub Showfrmitemreview(ByVal sender As Object, ByVal e As EventArgs) Handles itemreivewStripMenuItemA.Click, itemreviewStripMenuItemB.Click
[Code]....
Nothing happens I don't even get an error message. I've played around with the code numerous times and the only thing that worked was to have it open outside of the parent which I do not want to happen.
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Aug 17, 2011
I've created a very simple form with one button on. I need it so when the form runs, it opens in the bottom right hand corner of the screen regardless of the resolution. It also needs to be always on top of all other applications.
When the buttons pressed, i need it to close all iexplore instances and reopen a fresh instance.
I've tried to search for the answer but to no avail.
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Mar 20, 2010
I got 2 program. A & B, they been working fine ,until yesterday.
A:1.create new file and move to network share folder
2.check if file Exists
3. send msmq to program B.
B:1.wait msmq
2.recv msmq , and read the file in network share folder
it's really weird , the A program ok , but b throw file not found exception.i check file time is late then b recv mq 10~30 sec.
the code~~~
A:
dim file as CreateNewFile()
file.MoveTo("\xxx.xxx.xxx.xxxshare
ewFile.txt")
[code]....
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Aug 24, 2009
I have had absolutely no prior experience in any programming whatsoever. Yesterday I downloaded the visual basic 2008 express edition from Visual Basic 2008 Express Edition.
I have a small question which I am sure is very easy for somebody else to answer and I apologise in advance if this question is in the wrong section.
I wanted to make a small exe to autorun from a cd. I want to be able to hand the cd out to friends and family. So far I have achieved what I wanted with the little app. On the cd I have an exe file in a particular folder that when clicking a command button on a windows form - I would like to run this exe. At the moment I have:
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
Shell("explorer.exe ..appfolderapplication.exe")
End Sub
This finds and selects the application as required, however It does not run it. Another box comes asking me "Do you want to run or save this file?" If I click run, another box comes up "The Publisher could not be verified, are you sure you want to run this application?"
what code to I need to enter or change to make this exe run immediately as if I were the same as browsing for it and double clicking on it?
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