VS 2008 Still With FormClosing Event?
Jun 4, 2010
I have this notepad that is all ready to go now except for one thing..when the user uses the X to close the form she does get a confirm exit without saving changes dialog box, the problem is that she did in fact save her changes. So for some UnGodly reason ...,, my event is not picking up the fact that changes have been made.lution to this?? I have been up and down the net LOL..looking for ONE that works here is the code that I have going on for that event:
Private bIsChanged As Boolean = True
#Region "events"
Private Sub frmMyNotes_FormClosing(ByVal sender As Object, ByVal e As
[code].....
View 4 Replies
ADVERTISEMENT
Jun 2, 2012
I have to write some code for my app that if the application crashes or my machine crashes or for whatever reason the application closes abnormally and the user was in the process of making changes, I need to write some code that will at least ask the user if they wish to save their changes to the database.
With that said, what I have done thus far is set a flag in specific "TextChanged" events of certain controls. When the above scenario happens, I check this flag in the "FormClosing" event. In testing this, I selected a record from a DataViewGrid which then populated certain controls where this flag is set. I realize that at that point the "TextChanged" event is fired because the fields receive a value and that boolean flag is set to "True".
My issue is that this flag gets set even though the controls get populated but no physical data changes have been made. So, what I'm wondering is whether or not their is another event I can check other than the "TextChanged" event that will truly detect if any new changes have been made and at that point set the boolean flag to "True".
View 4 Replies
Mar 27, 2012
I have a single windows form application that is running in system tray icon.If the user press X button of the windows form a messagebox is displayed with Yes and No ( Yes ->close the form---No->keep the form running in system tray icon).I was thinking to prevent the scenario when the user open another instance of the application when there is already an instance running so i have used this code :
If Process.GetProcessesByName(Process.GetCurrentProcess.ProcessName).Length> 1 Then
MessageBox.Show("Another instance is running", "Error Window", MessageBoxButtons.OK,
MessageBoxIcon.Exclamation)
Application.Exit()
End If
The problem is that when i want to test this the message is displayed but after i press ok, a new messagebox appears (that one from Private Sub Form_FormClosing ).If i choose NO i will have to instance running!I have read that Application.Exit fires the Form_FormClosing event.Is there any possibility to cancel the triggering of the Form_FormClosing event?'this is the formclosing
procedure
Private Sub Form_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
Try
Dim response As MsgBoxResult
response = MsgBox("Are you sure you want to exit", CType(MsgBoxStyle.Question + MsgBoxStyle.YesNo, MsgBoxStyle), "Confirm")
[code]....
View 2 Replies
Apr 12, 2010
I have a simple Windows Form that hosts property controls at runtime. When the user clicks Close [X] I want to keep the window and its contents alive rather than killing it by handling the FormClosing event, canceling the event and simply hiding the form.
That's fine but at close of the application I need to actually close the window. I implemented the below but it feels kludgey. Is there a simpler, more clever way to handle this situation? (The form's controller calls KillForm explicitly after it receives a closing event from the main window.)[code]...
View 1 Replies
Jun 2, 2010
Private Sub frmMain_FormClosing(ByVal sender As System.Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles MyBase.FormClosing
Dim log As String = String.Empty
If File.Exists("watcher.log") Then
Dim sr As New StreamReader("watcher.log")
[Code] .....
No watcher.log file is being created/modified in the Release folder in my project, but it works when debugging and puts one in the Debug folder.
View 1 Replies
Mar 30, 2010
I have a hidden form in my app. When i call that form's Close() method fromanother form to close it, the form's FormClosing() and FormClosed() eventsare not raised. Is this behaviour normal and expected?
View 2 Replies
May 17, 2011
This is the code I used:[code]Why do I need it to read RemindersReaderClose and Homeworks ReaderClose? [code]
View 4 Replies
Dec 6, 2010
This is for a WindowsCE project,
Windows WM6 does not allow you to hook in WndProc easily as this has been hidden, I've built a class that inherits from MesageWindow, which allows me to receive Messages as intended.
What I'm trying to do is create an event that will return a value Boolean bypassing base.WndProc(ref m);
basically saying I've handled the event it does not have to, similar to how the Form_closing event would work e.g e.Cancel will cancel he closing off the form.
I've not finished my WndProc function as of yet but you should get the picture.
Code:
public delegate void WndProcEventHander(object sender, WndProcEventArgs e);
public event WndProcEventHander OnWndProc;
protected override void WndProc(ref Message m)
[Code].....
View 2 Replies
Aug 11, 2011
Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs) _
Handles Me.Load, Me.FormClosing
MessageBox.Show("form_load")[code]....
While closing the form I observed that the Form1_FormClosing method is fired first, and then Form1_Load second. Why is this order chosen? Why doesn't Form1_Load get fired/entered first, and then Form1_FormClosing second?How does .NET choose which method to fire first, of the two that handle the same event?
View 1 Replies
Feb 13, 2010
I have a code snippet that I want to run when the app is closing. So, I used FormCLosing event. But now i wanna place a confirmation message for exiting. Like, if the user clicks the Exit(X) button, there'll be a prompt, if he clicks NO, then the app will not close and revert to previous state. Now I find that hard to achieve using FormClosing event. because it'll get executed no matter what button the user clicks.
View 1 Replies
Aug 16, 2011
when closing the form, checkchanges() is run in order to check if there is data changes..in checkchanges(), i compare data in database and form..if data in form is not same as in database, it consider data has been changed..thus, if there is changes, user will be promt to save data before close..the problem is, when my form is closing, the checkchanges() always show no changes, even when i made changes..this is because, when data is compared (between database and form), the form is already commit changes in database..that is why , when data is compared, it is actually compare the same value...
For example:
*when form load*
database: employee number = 1009
textbox: employee number = 1009
[CODE]...
That is why checkchanges() always show no changes.because it commit changes to database before it made comparison..what should i do to prevent from commit changes when form is closing?
View 15 Replies
Aug 5, 2011
on the form event: FormClosing I have this code that saves a treeview to xml, when it is saved it displays a message, but when I click the messagebox OK button, the messagebox keeps popping up and won't close that form.Here is the code I use:
Private Sub AddressBook_FormClosing(sender As System.Object, e As System.Windows.Forms.FormClosingEventArgs) Handles MyBase.FormClosing
'Build our List of custom objects from our TreeView's Nodes
[code]....
View 2 Replies
Oct 9, 2011
I'm trying to give the user a chance to cancel FormClosing of MDI Parent by throwing a "Are you sure?" msgbox with an e.cancel however when FormClosing is invoked by MDI Parent, all MDI Children close first, before the msgbox appears.
I was wondering if there's an easier way to prevent MDI Children from closing rather than having to e.cancel every child form's FormClosing until I get a positive response to close and then push all the close events on the children because that seems like too much of a hassle if you have a lot of MDI Children.
EDIT: I guess the only solution I can find is adding If e.CloseReason = CloseReason.MdiFormClosing Then e.Cancel = True to the FormClosing event and using ApplicationExit instead.
View 1 Replies
Aug 16, 2010
In VB6 we had a code inside textBox_MouseUp to call textBox_KeyUp(-1, 0) and the signature of KeyUp was
Private Sub textBox_KeyUp(ByRef KeyCode As Short, ByRef Shift As Short) Handles textBox.KeyUp
Now when I migrate to .NET I changed the KeyUp event to Private Sub textBox_KeyUp(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles textBox.KeyUp
How can I do this call textBox_KeyUp(-1,0) now from textBox_MouseUp event?
View 1 Replies
Mar 23, 2009
I have code to extract each entry in an event log. If the entry is after a set date (the value of my startDate variable) then it gets the information from the log and outputs to an email (I can do all this, the bit I am stuck on is as follows) I am currently using the following code extract:
[Code]...
View 4 Replies
Aug 26, 2010
I have created a simple framework for a Windows service in VB.NET Express 2008. It enables a timer which then writes to the event log every 6 seconds until the service is stopped. This works fine. I adapted that framework into something further. It is using Windows sockets. Well, I haven't finished that part yet and I just want it to write to the event log successfully but I can't even get it to do that now. I am trying to write an event in the OnStart event. The service is being started successfully, according to the standard event log, but my custom events are not getting there. I don't understand why as I am using the same code for that as I was before.
[Code]....
View 8 Replies
Apr 3, 2010
Say you've got a form, Form1, and you're in the Paint event. Is there a way to test to see if, say, the Resize event is occurring from within the Paint event?
View 9 Replies
Mar 6, 2011
is it allowed to use more than one Sub to handle the same event ? For example , may I have 2 separate subs to handle the Load event of a form ? Will they fight each other ?I have tested it and it seems to work fine , nevertheless I thought I'd ask you . In case you wonder , there is no great deal , I just want to copy the same lines of code in more forms so I am doing it just in favor of the looking aspect .
View 5 Replies
Jun 12, 2007
I'm having a bit of a problem getting my application to close properly. Basically I have one main form from which all other forms open. If a user tries to close that main form, I want to bring up a MessageBox asking if they want to exit the application.However, when I try to do that it asks the question twice. It seems that the Application.Exit() is triggering the FormClosing event again for some reason, but I don't know of another way to exit the application. BTW, the main form isn't the startup form so I can't use the option to close when the startup form closes.
View 9 Replies
Jul 31, 2010
I've read thru Iceplug's tutorial on control arrays and got it working. I tried to add a new event by basically copying his click event code and calling it a doubleclick event. I used the proper addhandler and assigned the correct name to my sub. I have the click event changing the background color to blue and the doubleclick event changing the background color to green. The background color does not change to green. Why?
Heres the tutorial with my new code encased in asterisks ...
Code:
Imports System
Imports System.Windows.Forms
Public Class form1
[CODE]...
View 7 Replies
Mar 30, 2009
I am using VB.NET for Windows applications. What is the difference between Load event,Activate event and Enter event in the Form and in which order the above event is executed.
View 2 Replies
Jul 20, 2010
I'm trying to validate a few things in a form I'm building. It has a datagrid with clients info (taken from an access database) and a few textboxes where the user can type some search criteria. The thing is that those same textboxes are used to add new clients to the database and to modify a client's information if one from the datagrid is selected, so I made it that the buttons to insert and modify clients are disabled on load and thenevery time the text on a textbox changes ("TextChanged" event) they become enabled. So far so good. But then I wanted to make it so when a client from the datagrid is selected both buttons become disabled again until the text on a textbox changes (to make sure they're adding a different client and not the same one that was
selected).
I tried using the CellClick event from the datagrid to disable the buttons, but since every time a client is selected from the datagrid the info is shown on the textboxes, this triggers the TextChanged event too, and the buttons become available.So, is there a way I can tell the TextChanged event not to be triggered when the CellClick event occurs?
View 3 Replies
Apr 14, 2009
As per topic, may I know how to make it work?
View 3 Replies
May 10, 2008
this event works ok, but the problem is that I don't know what field was clicked. Should I use objectinfo or something else? VB.net won't recognize for example e.objectinfo.
View 1 Replies
Feb 19, 2009
windows service app I am developing to audit events in the Windows Security Event Log. I am using the EventLog class to read entries from the "Security" event log. I have set the log to raise events when an entry is written so I can parse the data. Here is where my problem comes in. If I run the service on Windows 2003 I can get all the data I need from each entry, but when installed on Server 2008 the EventLogEntry ".message" property comes back with useless data like this, "The description for Event ID '4738' in Source 'Microsoft-Windows-Security-Auditing' cannot be found." Under Server 2003 the message property has good data. Using the Event Log Viewer in Server 2008 I can see that it is rendering the correct data, but I am having a heak of a time doing the same. The "replacementStrings" property has the corresponding data that I need, but it appears to involve some other steps to get the data localized to the event provider, but I do not know how to do that.
I also checked the registry HKLMSystemCurrentControlSetServicesEventlogSecuritySecurity on both the 2003 servers and 2008 servers. They are identical execpt the 2003 has an entry the 2008 server does not:
String Type: GuidMessageFile
Value: %systemroot%system32NtMarta.dll
View 1 Replies
May 14, 2010
System.Diagnostics.EventLog.WriteEntry("Application", "Exception: " + x.Message.ToCharArray)in my catch block.
View 2 Replies
Mar 22, 2011
When the enter key is pressed, I would like to have <br /> added to the end of a each line in multiline textbox then allow me to type next line. Then repeat for each line.
using:
Private Sub TextBox_Body_TextChanged(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TextBox_Body.KeyDown
If e.KeyCode = Keys.Enter Then
Works ok for single line. Does however insert a blank line above current text and cursor is at start of second line containing text.
View 3 Replies
Apr 6, 2011
I have a dataset and am committing changes to the database using tableadaptermanager.updateall. My datatable has a column called DateAddedToDB. When saving to the db, some records will have this column filled in, some won't. I want to use linq to update this column on each record that is null to a value of now() but am not sure what event to use. Is there an event like BeforeCommit or something like that? Or is my way of doing this completely inefficient and there's a much better way of doing this?
View 1 Replies
Nov 25, 2009
I need to check the state of a CheckBox in a DGV which I am attempting to do using the CellValueChanged Event. The problem I have is when the DGV is being loaded, the CellValueChanged Event is being run even though there is no data being loaded.
What can I do to stop this event being run, until the CheckBox value is changed.
The only code I have at present is to check the event is working:
[Code]...
View 3 Replies
Mar 22, 2012
Below is code I have written to capture when the tab key is pressed inside of a two-column data grid view. The only problem I'm having is that I have to press the tab key twice for this event to fire. Would anybody know why this is.
Private Sub dgvCustomerIncludes_PreviewKeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.PreviewKeyDownEventArgs) Handles dgvCustomerIncludes.PreviewKeyDown
If e.KeyValue = 9 Then For X As Integer = 0 To (dgvCustomerIncludes.Rows.Count - 1)
If Not Trim(dgvCustomerIncludes.Rows(X).Cells(0).Value) = "" And Trim(dgvCustomerIncludes.Rows(X).Cells(1).Value) = "" Then
[Code]...
View 2 Replies
