VS 2008 Page Unload Events
Sep 13, 2010i need help to delete a record in a database table in crystal report, after the report had been view from the new page and when the page is close. the report is done in vs2008 c#.
View 2 Repliesi need help to delete a record in a database table in crystal report, after the report had been view from the new page and when the page is close. the report is done in vs2008 c#.
View 2 RepliesThe thing is i have a Master page and a Content Page. I have a LoadComplete in Content Page and a PreRender in Master Page. The problem is one of my htmlcontrols on content page i change on the LoadComplete event server side of the content page. I also have some code for disabling controls on the Master Page PreRender event. For some reason all controls on the aspx side go through the Master Page prerender except the ones that i change on the LoadComplete side. How can i make sure the entire content page loads and then the Master Page PreRender event is called, making all the controls go through that event.
View 1 RepliesI have master page in ASP.NET. I have added two asp controls to master page i.e. _EmpDROPDOWN and _findBUTTON.I have one content page. FindEmployee.aspx which shows result list of employees (Gridview) based on the selection made in _EmpDROPDOWN when _FindBUTTON is clicked on Master Page.I dont know how to read Master Page button click evenet in Content page.How to read master page button click event (VB.NET syntax) in Content Page?
View 1 RepliesI am using Visual Studio 2008 Professional to build a VB.NET console application. I have a text file that I want to copy to the output directory after a build. I would like to create a build event to do that, but I do not see a "Build Events" folder on the property page. Is there a setting where I can get this folder? Or, is there another way I can set up a post-build event to copy a file to the output directory? The folders I see on the Properties page:
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VB 6.0
Private Sub Form_Unload(Cancel As Integer)
VB.NET 2008
VB 6.0
Private Sub Form_QueryUnload(Cancel As Integer, UnloadMode As Integer)
VB.NET 2008
is VB.Net supported this two events ?
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Me.Close() End Sub
after the program was executed, warning is come out like this "object Disposed Exception was unhandled"
I'm trying to add a MsgBox and a few other things when a user exists the program but I can't seem to find the event for the form.
I tried the "leave" form event but it's not working.
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I have many forms in my project. When the project starts to run, the form named as˜frmMawill be loaded. I had given links to load other forms from this form. When other form gets loaded I want to close this main form. To do so I used the following
View 3 RepliesHow could I make the datagridView to unload data from database. I mean, once you make datagridview, it will load data from database so I would like to make it to not load any data. This is for searching purposes where you want to display datagridview look like empty and when user enter information to search in, it then has to display data.
Something like Students.datagridView.
I have an application in which i need to load a specific keyboard layout only when application is running and a text box (Textbox1) is under focus. I don't have an idea to load a specific keyboarded in VB.NET via programming.
View 1 RepliesI would like some code to execute at the "preload" stage of my usercontrol's lifecycle. However the preload event is only available on the Page object. So, I added the following method to my usercontrol:
Private Sub Page_PreLoad(ByVal sender As Object, ByVal e As System.EventArgs) Handles Page.PreLoad
However, I know get the compile error: "Handles clause requires a WithEvents variable defined in the containing type or one of its base types".
As the Page property is inherited from UserControl I don't see how this can easily be done.
Is there a way to "unload" a file from the Adobe PDF control so that it is blank, like it is before you load any file? I tried Me.AxAcroPDF1.LoadFile(Nothing) but that doesn't work.
View 2 RepliesIn my program i have a log in screen, what i want to be able to do is to be able to load the next page on the press of the "Enter" key as well as a button.
View 4 RepliesI am having problem with my windows based application in VS 2008. I have a page from where I copy the component and use the same on another page for saving my designing time.It works fine and run without error.But when I restart the solution then the 2nd page where I had pasted the component is not displayed in the form designer. I get the following on the screen
View 1 RepliesI want to run a subroutine to clear some things up when the user exits the application. I tried looking for a Form_Unload event or anything similar, is there a way to do this?I open a database connection on Form_Load, and would like to close it when the user exits the app.
View 2 RepliesI like to know how to unload a single form in vb.net.I tired form.showdialog() and form=nothing,but this is not working.
View 5 RepliesI have an ApDomain that is running a Main Routine, for example:
Public Sub Main() Implements Interfaces.IScript.Main
For a as Integer=1 to 99999
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I have a form that I use to get the user to input such as a username and password in order to make a network connection. This connection can be disconnected and reconnected as many times as neccessary whilst the application continues to run.
I obviously, therefore, need the form's text boxes, combo boxes etc to reset to their blank versions every time that the form is shown.
In VB6 this was easy; you just unload the form which completely removed the form from memory and thus the next time you showed it it was reset to it's blank state. In VB 2005, however, there is no unload so we have to use Close. I have done this and assumed that it would function in the same was that unload did in VB6.
The problem is that when I close the form using the form.close event handler the form disappears perfectly but when the form.show/showdialog is used the old form data still remains telling me that the form hasn't actually been unloaded but rather appears to have just been hidden.
I have single form in VB.net and I want to close or unload this application in Form1()event only once it get sussessful. I have some code to execute in form1 and after successfule execution I want it to unload. For this I have written below lines but it throws an error.public Form1()
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I have a button that I am trying to only allow specific people to see. So I need to unload it or hide it if they aren't the correct person or have the requirements. When I try to use btnUpdate.hide() in my else it will first allow someone to click on the button and use it then it will hide it. It's not hiding the button right away. Thats what lead me to think that maybe i am suppose to unload it some how if its not the correct user or users.
How do i unload a button if its not the correct users.
Me.Close()
MDI.Show()
Me.dispose()
MDI.Show()
i am using this code but in both condition whole wpplication gets closed i just want to dispose that single form what to do?
I am calling a Fortran DLL from Vb.Net. I am declaring this in the class and then I am calling the DLL. I made this Fortran DLL from a Fortran Exe code. If I just use the exe code of the Fortran program I get different values than if I use Fortran DLL. First I thought may be there is a delay, so I used Sleep() before the end of the loop. But this does not change the values I am getting. I don;t understand why the results are different in exe and DLL, since I made DLL using the same exe code. I am not sure if the DLL is completely exited before it called again. Below is the code (partial).
Declare Sub abbb Lib "C:Documents and Settingssanjida.tamannaMy DocumentsVisual Studio 2005ProjectsDll53Dll53DebugDll53.dll" Alias "aaa" (ByRef TOL1 As Single, ByRef tt1 As Single, ByRef TEND1 As Single, ByRef t_exposure2 As Single)
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Actually i am a VB6 developer, switching to VB 2010 (VB.NET), in visual basic we use to do Form1.unloadme.However, its not working in VB2010.
View 1 RepliesI am working on a project where I have to load assemblies (lets call them tasks) at runtime, run the task and then be able to kill off the whole assembly so that the dll can be replaced without interrupting the main application.There are many of these tasks running within the main application,some run sequentially and some run in parallel.Occasionally one or to of these tasks need to be updated and then re-added to the queue. Currently we are stopping the entire application and interrupting the other tasks at whatever stage they are at, which is not ideal.I have figured out that I will have to load each assembly into a separate AppDomain, but loading the assemblies in those domains is proving difficult, especially when I need to actually run the tasks and receive events from them.I have been looking into this problem for a couple of days and have still not managed to get a working proof-of-concept.
I have an Interface for the tasks which includes a 'run' and 'kill' method (subs) and a 'taskstep','complete' and 'killed' event.'taskstep' returns an object to be cached later, 'complete' fires when the whole task is done and 'killed' fires when it is ready to be unloaded.There should also be a timeout on the whole process of two hours and a timeout of 2 minutes on the killed event in case it gets stuck, at which point I would like to be able to unload it, forcing any threads to terminate (which is what 'kill' should do anyway).Each assembly may contain several tasks, all of which should loadable be unloadable.I have no problems loading these tasks as 'plugins' but am lost when trying to both use them and unload them. If I have to create some elaborate wrapper then so be it but is what I need even possible? I have tried inheriting from MarshalByRefObject but I do not even know the assembly fullname unless I load it first, which then locks the file. I have tried loading from a byte array of the assembly. This means that the file is not locked but a copy of it remains in the current appdomain. This will become problematic over the following months / years![code]
I'm kinda new here, and I didn't know what forum to put this in, so I just put it here. I wanted to load an assembly to an Application Domain, use it, then unload it when I'm done with it. The assembly uses too much memory. The problem is: After I unloaded the assembly, the memory used is not getting freed. I was watching the performance all the time. The available memory increases only after I close the whole application. And that assembly is the only thing that uses a lot of memory in my application. Here's the code I used to load and unload the assembly: How can I free up the memory without closing my application. The memory was suppose to get freed up by simply unloading the assembly that uses it much.
View 2 RepliesFollowup to a previous post: It's been determined that Windows Device Drivers cannot be written in VB.NET; that's being dealt with separately.
What I'm interested to know here is if there's a DotNET Framework facility for adding/removing/managing device drivers; for example, can I build a VB.NET application to list loaded drivers, or drivers attached to a specific device, then load or unload those drivers as needed? It never hurts to try. In a worst case scenario, you'll learn from it.
In the middle of converting VB6 code to VB.NET, I need to replace the following code that intends to close all open forms remaining in the application.
'close all sub forms
For i = My.Application.OpenForms.Count - 1 To 1 Step -1[code].....
I've replaced the Unload function with Close (as indicated by TFM), but the compiler complains that OpenForms is not a member of My.Application.Where can I access the open forms?
load and unload form just like vb6 in vs 2005 using vb.net. I'm trying this code.
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Me.Close()
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but when i click the button, nothing happened..
Im trying to delete a file on closing a form, but am unable, as the file is still in use.
Private Sub Main_Unload(ByVal Cancel As Integer)
If System.IO.File.Exists("Mydll.dll") = True Then
System.IO.File.Delete("Mydll.dll")
End If
Is there a way to unload this dll file or force a delete as the file is no longer needed when the program is closed.
I have a text input in textbox1 in tab page 1 and i want that text from textbox1 will be displayed in textbox2 in tab page 2.
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