Determine If A Form Is Already Open In SDI Application?
Feb 2, 2010
My program has many forms that can be launched from the main form, and when launching a form, I need for my program to know whether or not there is already an existing instance of the requested form open before it launches the requested form.
So, if I have form "Search" with button "View" that launches form "Details", I need to know if the "Details" form is already open when the user clicks the "View" button.
Apparently, if I had developed my application as an MDI application intead of an SDI application, I could just do "If frmDetails.visible = True then DoStuff()", but the Details form's Visible property always comes back as False, even when the form is already open. If the form is always being reported as not being visible even when it is indeed visible, what method do I use instead to find out that the form is open/visible/in use?
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Feb 23, 2009
How I Can open the same form in my application one time only can not open the form tow time in same time
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Jun 11, 2009
I have mdi application, on main form which is mdi container and has a tree view. i open the child form on afterselect even of treeview. the issue i'm facing that i open the form but focus remain on tree view until i click on the the form. my question is how i can give focus to form rather it stays on treeview. i tried frm.focus also activatemdichild(frm) no sucess.
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Jan 27, 2010
I my window project (vb.net 2005) , there are 20 forms. I want to open particular form when Press F2 when my application is running
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Feb 23, 2011
How do I add a button which, when clicked, will load a .exe from a location on my program files? And then to close the form app after the .exe is loaded?
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May 6, 2010
I have 2 vb.net applications. First application is a mdiform and childform. Second application is a single form. I want to open second form as a child form in first application.
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Jan 9, 2012
I need to open some external applications such as notepad.exe inside the VB.NET MDI form, and also I need to make sure that there is exactly only one copy of this running always.[code]....
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Sep 19, 2011
i am using a tabcontrol with close button.i have 4 tabpage and i call each tabpage through menustrip.
MainTab.TabPages.Add(TerminalPage)"for tabpage1"
MainTab.TabPages.Add(Attendance)"for tabpage2"
MainTab.TabPages.Add(Multimedia Projector)"for tabpage3"
MainTab.TabPages.Add(Conversation)"for tabpage4"
i can open and close it without any problem. my problem is that how can i determine if the tabpage is already open? bcoz for example if the tabpage1 is already open, clicking MainTab.TabPages.Add(TerminalPage)"for tabpage1" this will add another tabpage named terminal page.
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Jan 15, 2012
attch a file in .net application,which can open from the form on clicked..
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Sep 8, 2009
I have an application that automatically updates addins for excel from the server to all the computers on our network. right now all i get is an error if excel is open, but what I want to be able to do is check if excel is open on each computer first and give the user a chance to save their current work then close excel. otherwise i cannot update their addins if excel is open.
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Feb 10, 2011
Using 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.
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Jun 6, 2011
I am developing a program where I will save the information from a "Log file" from an external application..I have a biometrics system that reads and saves the log file to disk,once the user logs to the system, the system will save the file to a log file after that the system that i will develop will read the data from the "log file"(probably a text file) and send it to sql server.
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Oct 21, 2009
I am developing a program where I will save the information from a "Log file" from an external application..example: I have a biometrics system that reads and saves the log file to disk,once the user logs to the system, the system will save the file to a log file after that the system that i will develop will read the data from the "log file"(probably a text file) and send it to sql server what event should I use?
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Nov 27, 2011
I want to open up an existing instance if my program is already running only if its running the same version.I noticed that this question was asked for only if the name exists, but what if the version is older, I just want to notify the user that an older version is still running, "please remove older version before starting this version."The other link is this one:Return to an already open application when a user tries to open a new instance but they don't talk about closing an instance if an older or newer version is detected.
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May 18, 2011
I have been investigating this for several hours. I have found numerous links, including several here on SO which claim to show how to find the startup path, or the application directory. All of the solutions suggested return a location:
C:Users<my user name>AppDataLocalApps2.0XO8PWL8B.5HH1GZX7M0H.N1J<temp location>
When my WPF xbap is run from a remote location. I need to determine the actual folder of the remote location. I am deploying this to an internal server ABCDEF, so in order to run this application I am entering:
\ABCDEFmyApp.xbap
I want to programmatically determine the server and folder. My reason for this is that each time you publish a WPF with "automatically increment revision with each publish" turned on. The folder where additional DLL's are located changes, additional programs that this program depends on. I want to be able to dynamically determine the correct folder to look at.
I have tried:
'Dim path As String = Reflection.Assembly.GetEntryAssembly().Location
'Dim Path As String = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetEntryAssembly().Location)
'System.IO.Path.GetDirectoryName(System.Reflection. Assembly.GetExecutingAssembly.Location)
'application.StartupPath
All of which did not work.These links suggested many of the methods I have tried:
Link1
Link2
Link3
Link4
Link5
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Jun 3, 2011
I have been struggling with my programming class from day one. I still can't seem to grasp the complete logic on how to write code. Anyhow, I have an assignment due that I am stuck on. Here is the assignment:
In this exercise, you code an application that displays a letter grade based on the average of three test scores. Open the Grade Solution (Grade Solution.sln) file, which is contained in the ClearlyVB Chapl8Grade Solution folder. Code the application,using a function to determine and return the letter grade. If the average is at least 90, the grade is A. If the average is at least 80 but less than 90, the grade is B.If the average is at least 70 but less than 80, the grade is C. Tf the average is at least
60 but less than 70, the grade is D. If the average is below 60, the grade is F.
You will be developing the code for the function on your own. Below the Public Class frmMain line, insert this function header:Private Function CalculateGrade(ByVal testScore1 As Decimal, ByVal testScore2 As Decimal, ByVal testscore3 As Decimal) As String
In the function, declare variables for the average score and the letter grade. Calculate the average, use IF/Elself statements to determine the letter grade, and return the letter grade. Create a subprocedure for the Click event for the btnDisplay button. It should call the CalculateGrade function with three arguments ( the three test scores from the text boxes), and display the returned value in the lblGrade box.
[Code]...
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Oct 27, 2009
Is there a way to determine if the application is running from an RDP session or not? Our staff has VPN access and use Microsoft's RDP Client to connect to their computers at the office. They mostly interract with software we've written. I'd like to identify those people that use our applications via RDP as opposed to being physically at their computer.
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Oct 5, 2010
The Question sound like this.Assume the theater keep 20% of its box office receipts. Use the Following test data to determine if the Application is calculating properly :
[Code]...
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Apr 20, 2010
When debugging in VB6 it was easy to find the name of the active form because it was automatically highlighted in the Project Explorer.
How do I find the name of the active form in VS2010?
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Nov 12, 2011
How to open an application from 1 button (not to open the application, only to select it)
Example: 1 button> when it press to display only .exe file for choose
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Dec 29, 2009
How to determine whether form is it inside the desktop?
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Dec 21, 2011
im trying to find the top most window other than my form or its parent form...Background:Im writing software for a TS-MFD (touch screen - Multi function display), it has a docked menu bar at the bottom with the option to pull up an onscreen keyboard. Now the keyboard ive written and works well but the only drawback is i need to specify what window to send the keys too, be it inside my own application or a 3rd party app such as notepad. I believe the answer lies an recursively looping through GetForegroundWindow() from user32.dll and ignoring "Keyboard" and "MenuBar", but I dont know how to advance to the next top most window, i only know how to get the top window...so my window order is likely Keyboard,Menubar,(then the window im trying to grab)?
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Mar 3, 2010
I have three buttons on my main form, say Form1. Clicking any of the buttons brings up Form2 modally for input, it's a number pad. Now, depending on which button was clicked to get there, after the user enters his numbers, I need to change a specific label on Form1. In other words, btn1 clicked puts user input into lbl1 and so on... I could probably do this with a variable but wondering if there is a more elegant way.
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Jan 25, 2012
I'm writing a control that needs to check a property of the form it's placed in.Is there a way to do that?
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Feb 17, 2010
I have the name of a form in a string variable, e.g. "frmOptions". I want to:
1) get the fully qualified name of the form
2) determine if the form exists in the application
3) create an instance of the form
4) show the form
I know that using reflection I can do #3 this way, but I need to get the fully qualified form name first[code]...
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Nov 12, 2009
I have a number of dropdown lists that I'm trying to chain together and they all have autopostback. How can I tell which one of the dropdown lists was the one responsibe for the autopostback?
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Aug 5, 2011
I have an MDI application that can either run in TABBED or WINDOWED mode. When a user selects something from the menu a form is shown. All menuItem clicks pretty much look the same:
Dim frm As New <SomeForm>
frm.MdiParent = MDIParentForm
frm.Show()
[code].....
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Apr 1, 2010
How to determine the form on the right-bottom of the window (given the panel with the clock)?
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Mar 31, 2009
way to reset a timer if there is form activity so it will not expire until the mouse has been at rest for 2 minutes.
This timer runs for 120000 milliseconds usually, and sometimes it lapses (and logs you out) when you are in the middle of editing. Sometimes 2 minutes is not enough time to do all the edits. So I wish to reset the remaining interval as long as there is mouse activity. But I am not sure the best method to do this?
I have found the mousemove event but to me this seems like it's going to fire way too often and tax the resources if I preform operations here, maybe not? Is there a better way to get this functionality?
I want this functionality so that if someone starts editing on the UI and walks off/gets distracted it will lock the grids back so that some other user can't come dork things up.
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Mar 5, 2012
I have a Windows Forms project that is getting an error running on Windows 2008 server. I need help determining the problem based on the Problem signature information:
[Code]...
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