I've got an application which I want to only have 1 open.How would I make it check if the application is already open and only open if it isn't? I've had the idea of using 2 forms, one of which is the proper application and the other which just checks if its running then opens the other form.I would imagine it would check if there's more than 1 of the process name running and if there is close all others?
View 5 Replies
I have question regarding how i can check if the form is opened or not ??
View 2 RepliesI have 3 simple questions:
1. How to check if a form is opened?
[URL]
End If
2. How to play a sound (just a beep or something?)
3. When i have a string with keywords, separated by ","'s, how to convert this into a array? (F.A. Test1,Test2,Test3)
String.Split(",")
Check If Folder Is Opened?
View 2 RepliesI'm launching an Access ADE, using Tony Toews auto FE program. The AutoFE programs will, if newer version available, copy the latest version of the ADE from the server, then launch it. My code looks like:
Dim stAutoFE As String = "V:Appsautofestartmdb.exe /cmd /inifile: " & """" & "V:AppsAutoFESSP.ini" & """"
Shell(stAutoFE, AppWinStyle.Hide, True)
System.Threading.Thread.Sleep(1000) ' Time delay
[code]....
I had to put the Sleep delay in, otherwise the GetObject would open the ADE a second time.But I don't know how long the copy from the server will take, so I need to remove that Sleep line and check that the ADE has opened.
I tired this code to check if the Excel File is already open but didn't succeed
vb
Dim exl As New Excel.Application
If exl.Workbooks.Open("C: a1.xlsx") Then MsgBox("Yes")
I have my program (Student Pad - The Project - Haxaro Freeware) and it has gone fairly large. In my next release, i would like to know how many user approximatly are using it, so when ever a user opens my program for the first time on that computer, it sends me, or my website a report telling me that it was opened on a computer. so if 4,000 people download and open it, i should get 4,000 emails or reports
View 2 Replieshow can I check(with code) if an mdichild form is already opened or not. I have some mdichildforms that may open together. If an mdichild form is opened I want to dislpay the already opened form and not a new one.
View 4 RepliesMy program opens 4 excel spreadsheets updating info. I update one at a time and then close it before opening the next one.I want to add code to my program to test if the file is already open, before trying to open it. Occasionally someone will have one of the files opened and it causes a crash. If I test to ensure it is not open, then I can avoid this.
View 7 RepliesI have a CheckBox Question in VB 2005, I will have a bunch of checkBoxes not checked but once I check them I would like to display the check the next time the program is opened. How would I do that?
View 10 RepliesWhat I wanted to do is close all opened workbooks. This code does the work IF there is at least one or more opened workbooks. My problem is IF there is NO opened workbook at all; It goes around unendlessly in the WHILE Loop. How do I not process the closing IF there is no any opened workbook at all? (NOTE: I found this code from somewhere else.)
[Code]...
I have code which saves DGV contents including check box columns as a comma separated text file. I also have correct code which will take the text file and re-insert it into the DGV at a later time. This all works.When I'm working on the DGV, I have this
Private Sub DataGridView1_CellValueChanged(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellValueChanged
If DataGridView1.Columns(e.ColumnIndex).Name = "Column12" Then[code]....
So that when the check box is true, columns 1 and 3 turn different colours, and when false, go to a yellow colour.However, when I "re-insert" my DGV info from my text file, the check boxes come back correctly - as true and false on the right rows - but columns 1 and 3 don't change colour. I've tried a "DataGridView1.Refresh" option but not getting it to work.The DGV is unbound. I need it to recognise which check boxes are true and update automatically when the information is opened from a text file.
I have created a windows application which creates a database file and saves it to disk, it uses a custom file extension so that when the file is clicked it opens the application. In order for the application to use the data in the file it needs to rename the file so that it has a .mdb extension. My problem is that I cannot see how to get the name of the file which opens the application.
View 2 RepliesI am developing a windows service, in vb .et, that launches a legacy application that performs some work. The service acts as a wrapper around the legacy app allowing users to automate an otherwise manual operation.Everything is working great, except occasionally the legacy app displays a messagebox. When it does this the process halts until the message box is closed.
As the service will be running on a server there will be no user to close the message box.The service launches the legacy application in a System.Diagnostics.Process.My question is, is there way to detect that a message box has been displayed by a process that I have started using System.Diagnostics.Process and is there a way to through code to close the messagebox.
I've created an application that saves files with an extension of "*.pbca". When i click the saved file in Windows Explorer, it opens my application, as it should, but i now need the code that finds the file path of this file once my application has loaded.[code]...
View 14 Repliesi made a program that is associated with the .map file type. What I need to do is find out the path of the .map file that opened the application(including the file name for the .map file).
View 13 Repliesi have an application that used for entering some modification on images but what i want is that when somebody open any image using right click then "open with" and choose my application program then the image translated to the picturebox in my program so i need to know the code of the image path?
View 3 RepliesI am trying to get the file path that opened my application. So if I opened my application by making the text file open with my application, how could I get the file path of that text file? Lets put it this way, you have a text file. Ex: MyFile.txt, so when you click that it opens in NotePad and loads the text in MyFile.txt. How can I do that but just get the file path?
View 6 RepliesI am a beginner using 2008 Express and I am trying to get my application to remember and restore some combobox values. It seems to work fine if the application is opened and closed normally but for some reason it loses the settings if it is opened from the startup folder.
Here is how the startup link is formed:
Dim shortcutFile As String = Environment.GetFolderPath(Environment.SpecialFolder.Startup) & "FBNav.lnk"
If Not IO.File.Exists(shortcutFile) Then
[Code]....
The fact is I'm making an application, which users can install by using a Setup file...once installed the data in the database can be updated by a centralized server. To do this, they can insert a DVD/CD-ROM and export the necessary data towards it. I need to do it that way, because some of the users who really need this data will be using stand alone computers.The application gets it's data from a mdb-file and the connection remains open as long a person works with the application (maybe not the best way to do, but I know :-) )...when the user uses the application, he can perform an export...this exports the .ini-file and pictures (which works fine), but he also needs to export the mdb behind the application...I already tried connection.close() before and connection.open() after the System.IO.File.Copy...but that doesn't seems to work.
View 2 RepliesI have some code I am trying to get to work. I open a url and then I want to get that same url address from the opened we page web. For some reason when I place parameters in the object.navigate statement the locationURL comes back empty
[Code]...
i am new to the whole visual basic deal altogether and i'm sure i jumped into the hardest version. anyway i am trying to make a program for my band director so that when he checks-in/out uniforms its faster and easier. i have the checkout done but the check in is a bit of a trick. i need to read the data in from the file and whenever ", " that character is read it need to go to the next text box so it starts with textbox1 which is lastname and goes to textbox6.
View 14 RepliesI have an application that provides core services for a series of other applications.When another of these applications is started, I want to check that the service application is running and if not shutdown.What is the best method to check for the existence of the other app? I'm thinking that I should be using a global mutex in the services app and checking for it's existence in the other apps. Is this the correct way to proceed?
View 4 RepliesI was wondering if it is possible to check if a specific application is running when I open up a form.
If the application is running I want a label to say running, but if it isn't running then the label will say closed.
Is there any way to check if my application really has any dependencies?
View 3 RepliesI want to be able to test if an Excel application is already running on the computer. If it is, I want to use it to create and save a new file. Excel will remain open.If no Excel application is running, I will open Excel, create and save a new file, and then close Excel.
View 8 RepliesThe application loads Patient info(PatientID, PatientName, Levels) from a .txt file on to the first form. The user then clicks the evaluate button and the patient information with cholesterol levels above 200 are displayed in three listboxes on the second form. The Second form exports that information to a .txt file and displays the total number today over 200 and the average
View 4 RepliesUsing the Application Framework in a WinForms Project, I need to check conditions to determine whether the application should run at all and if it shouldn't run then I need to kill it before it even shows the main form. My conditional checking is occurring at the MyApplication.Startup event handler, so all I need is the method that shuts down or kills the current application.
I'm pretty sure this question's been asked a thousand times, a few of those even by me, but I can never remember the right language to get any useful info out of a Google or MSDN Search string.
It never hurts to try. In a worst case scenario, you'll learn from it.
while the application is running i'm using FileSystemWatcher to monitor the folder. But what if there are changes to the folder when the application is not running, how can I check for these changes when the application starts.(similar to how windows media player, for example, monitors your music folder. Even when you add songs to that folder when it is not running, it does discover them when it runs next time)
View 2 RepliesI have a simple console application which consists of a single executable and a DLL file. My project has a reference to the DLL. My question is how do I ensure the DLL is present in the same directory and prevent the console app from crashing? Although in reality the two files will probably never be separated, I want to make sure someone can diagnose the error without me there.
At first I tried adding File.Exists(PathToDLL) at the beginning of Sub Main(). If the file wasn't found, I was going to display a message and quit the application. But apparently if the DLL is referenced at any point in the code, a System.IO.FileNotFoundException is thrown regardless if the line is executed.
Is there some way to handle this in the executable itself without creating another executable to load that one?
