C# - Events Firing Unexpectedly?
Nov 2, 2010Can you write code to tell an event not to fire? Sometimes in my applications events fire unexpectedly. I know this is a broad question, but it must have happened to others out there.
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DataGridView Last Column Events Not Firing?
Dec 1, 2010I have a datagridview populated from a dataset datatable and all works well. Changing the values of columns updates the datatable except - if the 1st value changed is the last column on a row, the cellparsing and cellvaluechanged events don't fire. Others may not fire but these two I've been working with. The CellLeaving event fires and the RowLeaving event fires. Going back to the cell and changing the value again does cause the events to fire and everything works fine than.
why the events are not firing the 1st time a value is changed?
In debug I see that the datagridview iscurrentcelldirty value is true and also edit mode.
Datagridview Double-click Events Not Firing?
Jan 14, 2011I have a windows form that can search for data and the results are results are returned in a Datagridview. The Datagridview is bound to a custom datatable object. On the CellDoubleClick and CellContentDoubleClick events, a new form is supposed to open which will display the results of that row. What I am noticing is that the datagridview doesn't always fire when I immediately double-click on a particular row. It would appear that I have to first click on the row to "select" it, then double-click the row so the event will fire. Is there a way to remove this intermediate "select" step? Is there a property in the Datagridview that needs to be activated so the double-click events will fire right away? Does something possibly need to be done in another DatagridView event?
View 2 RepliesEditingControlShowing Events Firing Multiple Times?
Feb 24, 2009I have a DGV in VB.Net 2008 connected to an Access DB table. The DGV is not Read Only, but is full of read-only columns except for one, which contains a combo box. The combo box allows the user to select an outcome for that particular row, and then the program copies in a pre calculated value into the "Profit" column depending upon the item selected in the combobox. Then the user hits the Save button and the DB updates (currently via SQL methods in the XSD).
Easy enough so far.
Here is the code.
Private Sub DGUserBets_EditingControlShowing(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewEditingControlShowingEventArgs) Handles DGUserBets.EditingControlShowing
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The problem I have is that it would seem that if a user selects the desired outcome from the combobox but does NOT hit Enter, and simply mouses on to a different combobox to again select the outcome for a different row, the first eventhandler is not disconnected and thus the events fire multiple times. This then causes various default MsgBox errors and brings up problems when the user tries to commit all changes to the DB/exit program etc etc.
What do I need to do? Do I need to .EndEdit somewhere appropriate to force the row to save the changes? And where should I call this?
Events - SelectedIndexChanged Firing Multiple Times
Apr 25, 2012I am trying to programmatically add an unspecified amount of new UserControls to a form. One will be added every time an entry is selected in a ComboBox contained within the UserControl. Problem is, the SelectedIndexChanged event fires completely erratically. Sometimes twice, sometimes 3 times, etc., but never just once. No matter how many times I set the combobox's SelectedIndex to -1, it fires at least once with a SelectedIndex of 0. Sometimes the Itemselected event fires multiple times inbetween SelectedIndexChanged events.
InvoiceEntry.vb snippet:
Public Event ItemSelected As EventHandler
Private Sub cboItem_SelectedIndexChanged(sender As System.Object, _
e As System.EventArgs) Handles cboItem.SelectedIndexChanged
RaiseEvent ItemSelected(Me, EventArgs.Empty)
End Sub
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Load Events Not Firing When Running As Another User
Feb 16, 2012I've created an application that is supposed to map a network drive as soon as it starts using this basic sub:
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VS 2010 : Events Validating And Validated Not Firing?
Apr 11, 2011I'm trying to use the events Validating and Validated on a ToolStripTextbox.
Private Sub txtMenuOwnIP_Validated(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtMenuOwnIP.Validated
MyIP = txtMenuOwnIP.Text
StatusLabelIP.Text = MyIP
End Sub
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Neither code is firing.The CausesValidatition of the txtMenuOwnIP is set to true.I can enter stuff into that Textbox and leave it using the Mouse or simply piush Enter, but the posted code won't get fired (used a Breakpoint in both subs). There are no other event routines for this command used.
Javascript - Why Is __doPostBack() Not Firing My Bound Load Events
Aug 31, 2011Here's the situation: I have a variable number of dynamically created update panels on my page, so I thought I would write one method which handles all of the loading for each one.
My Updatepanel creation looks something like this:
Dim newUpdp As New UpdatePanel
newUpdatep.ChildrenAsTriggers = False
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Prevent Value Changed Events From Firing On Form Initialization?
Jun 30, 2010Consider a simple VB.NET form with a couple of radio buttons and a checkbox.
Each of the radio buttons has a CheckedChanged handler setup that performs some action based on the state of the checkbox.
My problem is, when I initialize on the default radiobutton to be checked (from the designer properties window) the CheckedChanged event is fired for that radio button, but the Checkbox hasn't been initialized yet so I either get a null pointer exception or the wrong value is used in the handler. Either way, I don't want that handler code to be run unless the user picks a radio button after the form has been loaded.
I currently get around this by not initializing the radio button, but I need to set that default eventually and the best place is from the designer. I also can add a boolean field that's not set to true until the form is fully loaded and not process the events if that is false, but it's a dirty hack.
What can I do to prevent that handler from running its code?
Events Firing Off Unexpectingly More Than Once , Manually Added/removed Event Handlers?
Sep 29, 2009I'm creating a small game which when the user clicking a menustrip item "New game" adds event handlers to each label in a panel control.
For Each scoreLabel As Label In Me.panelScore.Controls
If Not (scoreLabel.Name = "lblLeftBonus" Or scoreLabel.Name = "lblLeftTotal" _
Or scoreLabel.Name = "lblRightBonus" Or scoreLabel.Name = "lblRightTotal") Then
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VS 2010 : UserControl MouseEnter/Leave Events Aren't Firing - Cannot Raise Base Event From Derived Class
Feb 18, 2011When i use my UserControl in a project my Mouse Enter & Leave events aren't firing, i assume i fix this with a raiseevents in my usercontrol. However when i try to do this it says something about "cannot raise base event from derived class".
View 7 RepliesAsp.net - Session Disappears Unexpectedly?
Apr 26, 2011The site is a buy/sell site and the page the code comes from is the "add product" page.
The problem is that the session("change") becomes nothing by some reason, i cant find any errors.The payment.aspx have a button that sends me back to the page with a session("change"). The reason i see the problem is that i when i try to edit something the category gets restetted to the first in the list. and when i debug i see that the session is nothing, though it should be something
Heres the code:
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles BtnSubmit.Click
If Not stats > 0 Then
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Cookie Being Deleted Unexpectedly By Application
Jan 26, 2010I am having an issue with a cookie that keeps getting deleted by the application. When you go into the application, if the cookie does not exist, it gets created. This works fine and everything in the cookie is stored correctly. When I click on a link to go to another page, once everything loads completely, the cookie gets deleted from the file system. Even stranger than that, the values from the cookie remain until the browser is closed. That is the application appears to be retaining the values even though the cookie does not exist on the local file system. The next time you enter the application, the cookie is recreated so any values stored are lost.Now, I have done some tweaking on the code to see what could be causing it. I found that I am adding the cookie to the Response object any time I make a change to the cookie. The cookie is also being added to the Response object when the page load is completed. My initial thought was that adding the cookie multiple times to the Response object could be causing the issue. I commented out the code in the page load complete event and the cookie hung around until the next postback. Then I put in some logic to keep the application from putting the cookie into the Response object more than once, and then I lost the cookie again at the same point as before.All of the code for handling cookies is in my "base page" that all pages inherit from. The page that seems to be loosing the cookie is my search page. I am including the code from both of those pages.[code]
View 1 RepliesIDE :: GenerateResource Task Failed Unexpectedly
Feb 16, 2010I fail to build project in window7 64 bits. I am using VS 2008. Its working fine at vista 64 bits but when I compiled it at window7 64 bits, I get the following error:
C:WindowsMicrosoft.NETFrameworkv3.5Microsoft.Common.targets(1682,9): error MSB4018: The "GenerateResource" task failed unexpectedly.
C:WindowsMicrosoft.NETFrameworkv3.5Microsoft.Common.targets(1682,9): error MSB4018: System.Runtime.InteropServices.ExternalException: A generic error occurred in GDI+.
C:WindowsMicrosoft.NETFrameworkv3.5Microsoft.Common.targets(1682,9): error MSB4018: at System.Drawing.Image.Save(Stream stream, ImageCodecInfo encoder, EncoderParameters encoderParams) .....
Routine Unexpectedly Changing Values?
Feb 24, 2009I'm writing a program to help me understand 3d points and how computers manipulate them to 2d. Every time I run the conversion routine in my program the value I passed to it get's manipulated even though I use the ByVal key word. Here is the code in process order , tell me if I missed something here ?
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There is a status box for me to check one of the values :> This is the flow of what I have put together so far. The problem is once I run the program everytime I press the up key to make a call to the GetPoints method the value in MyPoint is changed to reflect the forumula in the getpoints method. I explicitly used ByVal in my variables on the method call so the values in the variable would not be manipulated. I've changed it many times but I can't seem to get the method to run where it does the conversion without manipulating the values in MyPoint. I've done similar things in visual basic .net 2003 , Now I am using the visual basic .net 2008 express edition. I don't if there is a difference in the two or some unknown bug.
.net - Combo Box Drop-down Closes Unexpectedly When On Tab Control?
May 22, 2009I have a modal form with a single instance of the built-in .NET 2.0 tab control. The tab control has several pages, and on one of them is a combo box that isn't populated until the user activates it for the first time. When that happens, I handle the DropDown event and run a process that takes several seconds, then I add the items returned by that process to the combo box.It works fine, except right after the list portion of the combo box is dropped down, it immediately closes as if some other control took the focus. I've narrowed it down to the fact that there is a tab control on the form, and the process that retrieves items for the combo box takes more than 4 seconds. If I create a completely blank form with just the combo box, I don't see this behavior.
Needless to say, this is strange beyond belief. Any idea why the tab control would interfere with the control that currently has focus?
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After Referencing DLL - ResolveManifestFiles Task Failed Unexpectedly
Jul 9, 2010I'm having a problem with a Visual C++ 6.0 DLL that I want to use in my VB.NET (3.5 SP1) project. I'm working with VS2008 on Win7 64bit. When I reference the DLL and build the project I get the following 3 errors:
The "ResolveManifestFiles" task failed unexpectedly.
System.ArgumentException: Illegales Zeichen im Pfad.
bei System.Security.Permissions.FileIOPermission.HasIllegalCharacters(String[] str)
bei System.Security.Permissions.FileIOPermission.AddPathList(FileIOPermissionAccess access,
AccessControlActions control,
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VB6 EXE Registration Unexpectedly Lost On Win 2003 64 Server?
Feb 3, 2012BackgroundServer: Windows Server 2003 R2 SP2 Standard x64 (physical server).Executable â.exeâcompiled with Visual Basic 6.0 SP6.The executable is registered on the server with PI.exe /regserveremWe have no idea of what exactly it is that triggers the problem. But after a undefined time/load/operations on the server the registration of the executable is lost or When calling the executable following error message is returned: "Retrieving the COM class factory for component with CLSID {E6A1ECAC-AB5F-4E31-96F5-A0A0CA5EB134} failed due to the following error: 80080005The error is easily fixed with following commands: API.exe /unregserverAPI.exe /regserver
View 2 RepliesVS 2008 Enum Property Changing Unexpectedly?
Sep 2, 2010I have an Enum file, as shown in first code block. Though it's first time I use an enum file, so maybe it's not correct to use it like this.. My purpose is just to be able to reference a global parameter from anywhere, so I can just type DataInterval.M1, and it will be treated as an integer... or.. will it not ? urther I have a property in my DataSeries class, of type DataInterval. And in this class I also have a bunch of methods Get/Set etc. to do different work on the dataseries (Inherits List(Of BarData)). roblem: The interval property keeps changing unexpectedly every time the GetNextCloseTime function is called.
''' <summary>
''' "Time Frame" of data series
''' </summary>
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VS 2008 Modal Form Closing Unexpectedly
Dec 18, 2009I have a modal form that does double duty.When a user wants to add a new object to a database, I open the form blank and they fill it out. When the form closes, all of the data is passed back to my main form and is used to create the new object in the database.When a user wants to edit an existing object, I open the form and pre-populate all of the fields with the object's data.I'm running checks on the form as they edit the fields, only enabling the "OK" button (which will update the database) if the form has actually been changed. If they make a change and then undo it, the "OK" button is reset to Enabled = False.At the bottom of the form are a ComboBox, two buttons and a ListBox. The intent is to allow the user to select an item from the ComboBox and "Add" ("Add" button) to the ListBox, or select an item in the ListBox and "Remove" ("Remove" button) it FROM the ListBox.
This function works fine when the form is loaded blank.When the form is loaded with data, however, (and in the testing I've done, the ListBox has no items in it to start, which is valid), adding an item from the ComboBox to the ListBox causes the Modal form to close with a DialogResult of Cancel.I've tried to trace the source of this issue, but stepping through each line in debug mode gives me no clue as to why this is happening.I COULD remove all of the checks and update the form each time the user presses "OK" (in the case of no changes, the database data would be overwritten with the same data), but that seems kludgy and less elegant. Plus, I'd like this logic to work.
VS 2010 - Windows Service Stopping Unexpectedly
Jun 4, 2012I wrote a custom windows service (VB .Net) to run some processing on data files in the background of one of our servers. The service basically finds the next file to process, breaks it apart and makes a PDF or two - nothing super complicated. It utilizes a timer, if a file is not found, it waits a bit and checks again (repeat indefinitely). The service has run for a week or two with no issues/pausing/stopping. I have plenty of error handling for this and I have not been able to break it... until today.
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Keystrokes In Winforms App Causing Window To Close Unexpectedly
Apr 1, 2010Whenever I enter text, even a single character, into a textbox in any Form in my application it causes the form and its parent to close. I've checked for the following so far:
Errant/mis-assigned event handlers that may be interpreting a keystroke as a Form cancel I am using keypreview in several windows but debugging shows this to not be a cause Happens in any form of the application Happens even with brand new text boxes dropped on the form Tried removing the WithEvents declaration from text box declarations (VB.NET)
PowerPoint Slide Running Through IE Control Pauses Unexpectedly
Aug 30, 2011I have a strange problem on one machine that my VB.Net (.NET 3.5 - VS2008) app is running on, it runs a custom sized Powerpoint presentation in an IE control within my VB app. However, on one of the machines my app is installed on, the presentation always pauses on slide 2.
This is a kiosk type app, where there is no user interactivity. On all the other machines running this software, there is no problem. So it must be something related to the machine itself.
The PC is an XP Pro machine and was originally running IE6, which displayed the problem, I ugraded it to IE8 to see if this would fix it, but the problem persists. The machine is running Powerpoint 2003 (don't recommend upgrading the machines OS/Software- this is out of the question, as it is a business spec machine - even getting IE8 installed was a battle!)
The presentation itself has no complexity, all 15 slides are basic text and photos, no animation, no video etc. As far as I can tell, the problem is nothing to do with my software, or the Powerpoint slideshow, as this operates fine on similar machines and reinstalls made no difference, it must be a problem with the machine/installation itself. I've tried running the slideshow on the problem machine, in PowerPoint itself, rather than in my app, and it runs fine. I've also tried running it in an IE window, without running it through my app, and again, it seems fine.
VB 2010 Error - ResolveAssemblyReference Task Failed Unexpectedly?
Jun 7, 2011Here is the error I get when trying to debug my program: The "ResolveAssemblyReference" task failed unexpectedly.
System.IO.FileLoadException: The given assembly name or codebase was invalid. (Exception from HRESULT: 0x80131047)
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Xmltextreader - The Request Was Aborted: The Connection Was Closed Unexpectedly
Dec 2, 2009while looping through a short XML file called from xmltextreader retrieved from a webservice, I'm repeatedly getting the error: The request was aborted: The connection was closed unexpectedly. it constantly dies a row or two from completing the parsing.here's my short code:Code:
'Get the principal-id for Group Dim url As String = "https://xxxxx.acrobat.com/api/xml?action=principal-list&session=" & strCookie xmlRead = WebRequestToServer(url) Do While xmlRead.Read If xmlRead.NodeType = XmlNodeType.Element Then If xmlRead.Name = "principal" Then strGroupID = xmlRead.GetAttribute("principal-
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Jquery - .NET Serialization And Weekcalendar - Undefined Events.events
Oct 13, 2011I have been trying to implement the jQuery weekcalendar using .net. What I can't seem to figure out is why weekcalendar states events.events is undefined after I make an ajax call to a webmethod I created which returns JSON. Below is the relevant code:
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Make Keybord Events And Mouse Events for Learning?
Aug 2, 2009I want to make Keybord events and mouse events for learning and educational Purpose.
1. In Form any object like A "picture box" move by Arrow keys .
2. Picture Box Contain many Picture i want change Picture With next and Previos By Arrow keys.
3. I contain Voice of alphabet in Mp3.When i Press any button in textbox then its work.
4. Mouse Pointer Change My Own.
5. I click any Object or any thing By mouse its noice clicking sound like Tik Tik Tik.... Question No 3 is very hard to do . but not im possible
Service Will Not Start - Error 1067: "The Process Terminated Unexpectedly"
Oct 23, 2009I have a service made from VB2008. It works fine on my station and on several others. However, on some stations, I get an "Error 1067: The process terminated unexpectedly". The service includes a log writing procedure in the OnStart event but the service crashes before even getting there. This is really weird because, as I say, the service runs fine on several stations. At the moment, the service is a full-trust app, is set to logon at Local System level and has the following manifest settings:
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Error1 The "GenerateResource" Task Failed Unexpectedly
Jun 14, 2010Error1 The "GenerateResource" task failed unexpectedly.
System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
at Microsoft.Build.Tasks.ProcessResourceFiles.Run(TaskLoggingHelper log, ITaskItem[] assemblyFilesList, ArrayList inputs, ArrayList outputs, Boolean sourcePath, String language, String namespacename, String resourcesNamespace, String filename,
String classname, Boolean publicClass)
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"GenerateResource" Task Failed Unexpectedly?
Jan 9, 2012before my MS Visual Studio 2010 working normally, but yesterday when i tried to make a new program and when i run the Visual Studio 2010 an error appear about "IntelliTrace.exe has stop working" i just ignore it then the real problem was this; when i put image(s) i always got error but when i remove the image my program runs normally.
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