Get Index Of Item In Collection That Raised Event?

Jun 30, 2010

In a list of timers, how do I determine the index of the item that elapsed without having to iterate the collection as shown below (e.g. can I pass a paramater to OnTimedEvent, or can the collection raise an event to say which item fired???). It's the individual timer index that I need as I'm using it to refer to something else.

(I wont know how many items I'll have in the list in advance so I can't create an individual event handler for each timer - I don't think I should even if I did).

Public Class Form1
Private _timers As New List(Of System.Timers.Timer)
Private Sub Form3_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

[code]....

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Collection Item Changed Index?

May 15, 2009

Is there any way to get the index of the changed item? I couldn't find any examples.

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Get Information About A Processes When An System Process Event Is Raised An Event

May 17, 2012

I am making a function of an application that when a function is called the application will close all processes that are owned by the user and were started after a specific point. My thoughts on this would be to trigger an event in my application every time a process is started and ended, and only if the processes is owned by the user, the event should get information (e.g. the process ID, name, etc) about that process and add or remove that information to/from an array depending on if the process starts or ends. Then when a function is called end all the processes in that array.

[Code]...

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VS 2005 Error:Index Was Out Of Range. Must Be Non-negative And Less Than The Size Of The Collection.Parameter Name: Index

Oct 23, 2009

Getting error filling grid view from reading through data table:

Dim myDataTable As DataTable = myDataSet.Tables("SunTrust")
Dim myRow As DataRow
Dim i As Integer = 1
Try

[code]....

Error:Index was out of range. Must be non-negative and less than the size of the collection.Parameter name: index

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Datagridview : Index Was Out Of Range. Must Be Non-negative And Less Than The Size Of The Collection. Parameter Name: Index?

Dec 9, 2009

I am using Sub to format datagridview but during Form_Load this error occur. There are rows in datasource and dg.row.count is > 0.

.Columns(0).Width = 50 <==== ERROR HERE
.Columns(1).Width = 150
.Columns(2).Width = 80
.Columns(0).HeaderText = "ID"

[code].....

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Error - Index Was Out Of Range. Must Be Non Negative And Less Than The Size Of The Collection. Parameter Name: INDEX

Jan 22, 2009

What im trying to do is send vars to a flash file.The following is my code:

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim oTitle As New ArrayList
Dim oSub As New ArrayList
Dim oRate As New ArrayList

[code]....

What I'm expecting the output to display is something like "t1=value&s1=value&r1=rate&t2=value&s2=value&r2=rat&t3=value&s3=value&r3=rat" But... i keep getting this exception: index was out of range. must be non negative and less than the size of the collection. Parameter name: INDEX.

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Error - Index Was Out Of Range. Must Be Non-negative And Less Than Size Of The Collection. Parameter Name: Index

Aug 25, 2011

I have a datagridview, with 3 columns, each containing dropdown filters (in the column header). Of the 3 columns, 2 are working perfectly fine, but whenever I try to filter the 3rd column, it gives me this error: (Also all of the column's have the ColumnType property set to: DataGridViewAutoFilterTextBoxColumn) "Index was out of range. Must be non-negative and less than size of the collection. Parameter name: index." The error points to the part that begins with "If dgv1.Rows(e.RowIndex)..."

Private Sub dgvWPS_CellFormatting(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellFormattingEventArgs) Handles dgv1.CellFormatting
If e.ColumnIndex = 1 Then

[code]....

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Index Was Out Of Range - Must Be Non-negative And Less Than The Size Of The Collection. Parameter Name: Index

Apr 13, 2010

i am trying to get the value into the cur_stock where item_id = datagrdiview.curentcell.value.I am lookin out for the solution since couple of days, but couldnt figure it out.Well, m trying to make this work on CellMouse click event

Below is my vb.net code:

Private Sub DataGridView_stockout_CellMouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellMouseEventArgs) Handles DataGridView_stockout.CellMouseClick
Dim i As Integer = Stock_checkDataSet1.Tables(0).Rows.Count - 1

[code]....

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Why Is Event Being Raised Twice

Sep 7, 2010

This is the abstracted code for simplicity.

Public Class Form1
Dim WithEvents bt As New Button
Private Sub Bt_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles bt.Click
MsgBox("Click")

[code]...

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ASP.Net Event Only Being Raised Every Other Time?

Mar 9, 2010

I have an ASP.Net web user control which represents a single entry in a list. To allow users to reorder the items, each item has buttons to move the item up or down the list. Clicking on one of these raises an event to the parent page, which then shuffles the items in the placeholder control.Code fragments from the list entry:

Public Event UpClicked As System.EventHandler
Protected Sub btnUp_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Handles btnUp.Click

[code]....

It originally looked in testing like every other time the value for sender (verified by its properties) that reaches UpClicked is of an adjacent ListItem, not the one I've just clicked on - the first click is always wrong, then the second for the correct control.At present,testing appears to show that the button's click event is just being ignored every other time through.Breakpoints on the click events within the control simply aren't being hit, though the events are definitely being established.

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Handle An Event That's Raised In New?

Aug 23, 2011

[code]But even here it seems the handler isn't registered until after New has completed.However, in real life the event is raised within code that's semantically part of the object initialisation, and I'd really rather not have to create some Initialize function.

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Collection Index Must Be In The Range 1 To The Size Of The Collection?

Dec 17, 2009

I've been working with a CMS called InsiteCreations 2008. I'm running into an error I just can't wrap my head around. I would even be willing to compensate anyone a small amount over paypal, for a solution. The error is rare in occurance, and appears when clicking about 3-4% of links to other pages within our CMS.The full code page is quite large, but there seems to be only one function associated with the error. The error also only appears when not logged into the CMS. If logged into the CMS, clicking the link simply displays the page as normal. I have already checked permissions on the page from the CMS admin console, and it is public.

The error message is as follows:

Server Error in '/' Application.Collection index must be in the range 1 to the size of the collection.
Description:
An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

[code]....

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.net - FileSystemWatcher Changed Event Not Being Raised?

Apr 29, 2009

I'm working on a Windows Service that watches a few folders for changes, creations, and deletions. It all works well with the exception of one watcher that watches a single file (XML File with Configuration Settings) for minor changes.

I tried taking the Windows Service code and putting it into a simple windows application with start/stop buttons for the filesystem watchers and stepped through it. It never detects the file change of the XML config file. The changes are indeed occurring and the "Date Modified" of the file is updating.

XmlEventReferences = New System.IO.FileSystemWatcher()
XmlEventReferences.Path = "C:XmlReferences"
XmlEventReferences.Filter = "*.xml"

[Code].....

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Display Something When Basic Event Is Raised

Jul 27, 2010

I want to write an event that will simply display something when it is raised. I have never really worked with event driven programming before and am just trying to get a simple example working. It is not yielding any errors, but when I switch to debug mode I can see that the event it not raising correctly.

[Code]...

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Dropdown In UserControl - Event Is Not Raised

Jan 11, 2012

I have a user control named "LettersDropControl". It has a dropdown list. I am using this control in a aspx page. When I change the selected item it is not calling the ddlLetters_SelectedIndexChanged event handler? What change I need to make in order to execute the code in ddlLetters_SelectedIndexChanged event handler?

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="LettersDropControl.ascx.cs" Inherits="MSAJAX1.LettersDropControl" %>
public partial class LettersDropControl : System.Web.UI.UserControl {
private string selectedLetter;
public string SelectedLetter {
[Code] .....

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Handle An Event Raised From A MODULE?

Mar 2, 2011

I must be missing something really basic, but I just can't figure this out. I have a module (declared as a Module, i.e. a VB "static class") and I have an event declared in it, and places to raise the event. But I can't figure out how to handle the event.

Let's call the module MyModule with an even MyEvent. Like so:

Module MyModule
Public Event CallHelp()
Sub ExamineStuff( ByVal input As String)

[code]....

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.net - Event Handler Is Never Called Because The Original Event Is Raised In Another Event Handler?

Apr 18, 2011

The event handlers in my parent class are never called though the events are raised in the child class.

The Code:

Public Class childForm
Public Event checkboxchangedEvent(ByVal checkbox1 As Boolean, ByVal checkbox2 As Boolean)
Private Sub checkboxchanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged, CheckBox2.CheckedChanged

[code]....

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Determine Whether A Form Has Raised Its Shown Event?

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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Event Handler Does Not Catch Raised Events?

May 12, 2011

I have a test class with an implementation similar to this:

public class MyObject Public Event testEvent(ByVal duh As Boolean)
Public Sub New()
'some code here
End Sub

[Code]...

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Event Raised In Constructor Cannot Be Handled Outside Very Class

Oct 26, 2009

I discovered that an event raised (directly on indirectly) in the constructor cannot be handled outside the very class. To prove if that was the actual problem, I wrote a simple exemplary app.
Class with the event:
Namespace Utils
Public Class A
Public Event Test()
Public Sub New()
CallTest()
[Code] .....
The reason of such behavior became quite obvious after writing those pieces, but maybe there is a way to omit it?

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VS 2005 Stopping Event Raised With Timer?

May 2, 2009

I'm new to VB and relatively fresh in programming in general. I'm trying to write code to make a label flash red. The method involves using a timer. Problem is, it flashes, but I can't figure out how to make it stop. xD Here's my

Private Sub SeleneExplainsToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SeleneExplainsToolStripMenuItem.Click
lblNumbers.ForeColor = Color.Red
Timer1.Enabled = True
AddHandler Timer1.Tick, AddressOf OnTimerEvent
End Sub

[Code]...

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VS 2005 Update UI In Event Raised From Thread?

Jul 3, 2011

I want to raise an event from a non-UI thread where the event will be handled by the UI. Currently, I have to use .Invoke in my methods (which updates UI) called from the event.

How can I raise the event, similar to Background Worker's progress update event, where I don't have to specifically do an .Invoke for UI updates?

Do I wrap the event with a delegate or something? Sample code will be fine though, if the explanation was tedious.

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Button Click Event Is Raised Twice In Silverlight Project?

Feb 28, 2010

I have a central page loading child controls into a container in a Silverlight Project.Problem is events like button click events are fired twice after processing the child forms.Suspect it might have something to do with a double initializecomponent??

Private Sub btVolgende_Click(ByVal sender As Object, ByVal e As System.Windows.RoutedEventArgs) Handles btVolgende.Click
Select Case Stadium

[code].....

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User Control Button Click Event Not Raised

Nov 4, 2010

I have a User Control that has been added to the page dynamically. When I click a button on that user control[cod]e...

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VS 2005 Test What Event Has Raised In A Multi Handler

Jun 2, 2010

I want to know what the Event has raised in a multi handler.

[Code]...

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Winform Event Raised In Subclass Won't Sink In Form

Aug 2, 2011

I'm trying to capture the initial value of a listbox immediately after it's clicked on, and before the SelectedIndex is changed. The following was taken from: MouseDown in WinForm ListBox Kills SelectedIndexChanged, converted to VB. The ListBoxComponent Class is in a Component that shows at the top of the Toolbox.

Public Class ListBoxComponent
Inherits ListBox
Public Const WM_LBUTTONDOWN As Integer = &H201
Public Event PreSelect As EventHandler

[code]....

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"Index Was Out Of Range. Must Be Non-negative And Less Than The Size Of The Collection. Parameter Name: Index"?

Apr 20, 2012

I am running a VB.NET program and having an error of "Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index".My code looks like below.

If Status.InvokeRequired Then
Try
Status.Invoke(New delegateoneArg(AddressOf onChangeEvent), ws)[code].....

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Get Selected Item Index Or A Sorted & Grouped List Relative To Item Source?

Feb 12, 2011

I'm having some difficulty with a sorted & grouped listbox in WPF vb.net 3.5 that has an items source bound to an ObservableCollection.

What I want to be able to do is to retrieve a piece of data from the ObservableCollection items source depending on what item in the listbox the user has selected.I've almost got it working but because the listbox is sorted it does not match the index of the items source.

[code]...

As I previously mentioned, because the lstBox is sorted and also grouped the index's don't match up.Does anyone know how I can get the correct information I want from the List Source depending on the selected item in the list box?

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Handle An Event Raised In Class Inside Own Class?

Apr 14, 2009

I have a "partial" class in VB.NET. Half of it is auto generated by a code generation tool. That half implements INotifyPropertyChanged, so any properties in that part of the partial class raise the PropertyChanged event.In my "custom" part of the class, I declare another property that depends on one of the properties in the auto-generated side. Therefore, when that auto-generated property changes, I also want to raise a PropertyChanged event on my custom property that depends on it.

If I go into the generated part of the class and raise the event there, that will get overwritten if I ever re-generate that part, so I don't want to do that. I would rather add an event handler in my side of the partial class that checks if the generated property changed, and if so, raise another event for my custom property.

[Code]...

I'm assuming it's because normally you'd use the WithEvents keyword to tell the compiler that you're subscribing to events from that object. I don't have a clue how to do this inside of the class that's actually raising the event, or if that's even possible.

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Index Out Of Range - Must Be Non Negative And Less Than Size Of Collection

Jun 8, 2012

I have RowDatabound event where I want to change column names like this:
Protected Sub gvKeyValueOfstringstring_RowDataBound(sender As Object, e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles gvKeyValueOfstringstring.RowDataBound
if e.Row.RowType = DataControlRowType.Header Then
gvKeyValueOfstringstring.Columns(0).HeaderText = "Match"
gvKeyValueOfstringstring.Columns(1).HeaderText = "Replace"
End If
End Sub

But I am getting err:
Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

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