Raise The Event Handler?
Jan 18, 2012
I converted some code from c# to vb, I have the following error:-
m_axCalendar.DoRetrieveDayEvents += New AxXtremeCalendarControl._DCalendarControlEvents_DoRetrieveDayEventsEventHandler(m_axCalendar_DoRetrieveDayEvents)
Red Error = Error1'Public Event DoRetrieveDayEvents(sender As Object, e As AxXtremeCalendarControl._DCalendarControlEvents_DoRetrieveDayEventsEvent)' is an event, and cannot be called directly. Use a
[code]....
I can get rid of Blue error by changing it to : AddressOf m_axCalendar_DoRetrieveDayEvents Not sure how to fix red error?
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Jun 12, 2011
i guess the title pretty much states the question but i will give the senario to be more clear. i have a mousemove() event which i add in my program programmatically and i need a way for raising that event (again) programmatically too. raiseEvent control_mousemove() doesn't work as it says that "'control_MouseDown' is not an event of 'main'."
[Code]...
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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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Aug 27, 2011
How do I get a Event Handler to fire from within a nother Event Handler?
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Aug 9, 2011
I am trying to put an extra event in, UpdateID and it's not firing.
[Code]...
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Sep 15, 2010
I want to raise an event for an opto-input state change but not sure if I can. Basically I have 4 opto-inputs on a PCI control card - one of which changes pretty rapidly - that I currently poll with a timer. I'm looking at getting a proper hardware counter for that but the other 3 are production status indicators. I'd prefer it if they alerted the app to a state change though.
Depending on the state of one of the inputs I have to fire a relay which simulates a button push. Having been playing with serial ports and getting a very useful app built for logging production data into a SQL Server DB I want to re-visit a proof-of-concept system I built a few months ago.
Current code - which works fine - but I'd like to change is like this:
Private Sub tmrOptoInput_0_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles tmrOptoInput_0.Tick
'Read OptoInput_1 to Monitor Track State...
Dim aType As Byte ' replace Byte with any other type
[code].....
Having 4 inputs so I need 4 timers, plus another one that polls the database and checks a status flag which triggers the app to start logging. I'd like it to be event driven rather than timer driven if at all possible but I don't know how and there's nothing in the control card docs. Also I can't seem to find anything relevant on the web.
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Mar 21, 2012
remove an event handler from within the event handler?
I have a class that gets data from a hand scanner. When the scan is complete and the data is validated, the class fires a custom "ScanComplete" event and returns the data in a custom EventArgs.
In the calling program, I'm creating an instance of the scanning class and adding a handler for the "ScanComplete" event. In the event handler I get the data that was scanned and then remove the handler.
It seems to be working but it feels wrong to remove the handler while I'm running inside the handler. Will this cause a problem?
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Sep 14, 2010
How to raise event in vb asp.net 2.0 ?
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Apr 8, 2010
Is it possible to run a sub routine on my form after all other sub routines have finished? I am having a problem using a filewatcher that watches a certain path and runs an SQL job if a certain file is pasted. For some reason my procedure leaves a file behind sometimes and others it does not. I was wondering can I use a form event to run a different procedure after all other sub routines on the form are completed that would check this directory for remaining files again?
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Nov 27, 2010
I'm trying to complete this airline reservation application, but having a problem in this part of the question:Creat an event handler for the FlightBindingSource's PositionChanged event: select FlightBindingSource in the class Name combobox then select position changed in method name combobox to creat the FlightBindingSource's PositionChanged event handler. Write a code to access the currently displayed flight object and pass its flightNumber to method DisplayPassengers as a decimal.This Is my code so far:
HTML
Public Class AirlineReservationForm
Private database As New ReservationsDataClassesDataContext()
Private Sub FillAll()[code].....
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Oct 20, 2009
Below I create an array of labels. I would like to add an click event to my labels. Can someone point me in a direction?
[Code]...
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Sep 28, 2009
I am comfortable with Vb.Net events and handlers.how to create event handlers in c#, and raise events.
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Dec 15, 2011
Normally I raise an event like this:
RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs(propertyName))
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Mar 13, 2011
I want to act with a service (kill the procces) whenever a process (executable file) comes up.Obviusly it is an Event but I don't know what event is.
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Mar 11, 2009
I'm trying to raise an event from a class. It looks ok but it did not raise the event as expected...?
Steps
1 - Load the form2
2 - Boutton1 call the form1 and load the class animation
3 - Class animation raise the event for the form1
Here is the code !
Public Class Form1
Private WithEvents AnimationTextChange As Animation
Public Sub mdiMainEvent_StatusTextChange(ByVal _text As String) Handles
[Code]....
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Jan 28, 2010
how to raise an event in vb2003
this my
Public Class Form1
Public Event TimerStart()
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
[Code].....
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Jul 13, 2011
I have a class with a property, and I want to raise an event when the property value changes, but I have no idea how to declare events, or call them?
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Sep 27, 2009
I have a button that I need to use twice, the first time I click it, it validates that a string inside a textbox is a certain length. That part works. What I want to do is press the same button again but when I press it the second time it is suppose to popup a hidden label. But when I try to use a raiseevent command it gives me an error saying "the button is not an event in my program" tell me how to use the OnClick?
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Mar 26, 2012
How do I format,
EventzBindingSource_AddingNew(EventzBindingSource,
???)
to raise this event:
[code].....
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Nov 29, 2010
I have an MDI parent form and 2 child forms. Each child form has data bound controls bound to the same sql table; one from is for displaying data and the other is for editing data. After the editing form closes, I need to update the data in the display form (if it is displayed). I can think of a few ways to do this, but I would like the display form to simply respond to an event raised by the database. Is it possible to create (and raise) an event in the database proper? If not what is the best/acceptable way to update data on a data bound form?
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Sep 6, 2009
I have 2 classes one main class called Mygrid and another class inside it called TLBoxEditingControl which inherits a textbox into grid cell.Also I have added one Listbox called LstBox to the usercontrol MyGrid.
1) Initially its visible is false. How can i make visible true in TLBoxEditingControl class.
2) I have an Event called MyList() in Main Class, how can I raise this event in TLBoxEditingControl class.
Here is the code i use, This is not working please expalin
Public Class MyGrid
Inherits DataGridView
Public Event MyList()
[code]....
I have added this control to a form and added this code
Private Sub MyGrid1_MyList() Handles MyGrid1.MyList
MsgBox("ggg")
End Sub
Here the event is not raising.
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Feb 14, 2011
Is there is an event that get raised when oject of a custom/user control is set to nothing?
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Jan 4, 2012
I want to get an event when a list item is added.
Private WithEvents newMessages As New List(Of NewMessageList)
Private Sub VariableChanged(ByVal NewValue As Integer) Handles newMessages.listChanged
MessageBox.Show(CStr(newMessages.Count))
[code]....
This part is the issue: newMessages.listChanged because the even can not be found. What am I missing?
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Sep 24, 2010
When I utilize AddHandler in VB to add my own method to the Click event :
AddHandler Button.Click, AddressOf myButton_Click
I see that my code executes last - after other event handlers for the Button_Click event. Is there a way to insert my event handler in front of other events so that it executes first?
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Jul 1, 2010
How to raise combobox_SelectedIndexChanged(object sender, EventArgs e) programmatically? Lets say i have method called ClearFields(). I want to call the event before i hit the end of Clearfields() method.
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Mar 20, 2012
I need to transform the following in VB.NET from C# (.NET 4)
class XXX:
public event EventHandler ContentScaleChanged;
if (otherXXX.ContentScaleChanged != null)
{
otherXXX.ContentScaleChanged(c, EventArgs.Empty);
}
I cant' do RaiseEvent ContentScaleChanged(c, EventArgs.Empty), because I need to raise that event on the otherXXX instance...
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Nov 12, 2011
i've an owned form that never raise the paint event, and so i can't make it rounded...
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Jan 31, 2012
I'm trying to raise an event in a mocked interface. I can get this in C#, but for some pain-in-the-butt reason can't get it working in VB.Net. Hopefully I haven't missed the boat conceptually and all I'm missing is some syntax. This is similar to the code I'm working with:
Public Interface ISendable
Event SendMessage(message As String)
End Interface
''**********
Public Interface IPrintable
Sub PrintAnnouncement(announcement As String)
[Code] .....
How to complete or correct the line in my test class that begins "sendable.Raise..."? Maybe there is more setup I need to do, but the Moq site didn't seem to indicate this is the case.
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Nov 20, 2009
I have a WinForms class that presents a TreeView of some network nodes. I have a separate module that interfaces with the network and detects when nodes are added or removed. I would like the module to trigger the TreeView when the network changes.Example
Public Class Main
Friend Sub TV_Main_Network_Click ( ByVal sender As System.Object, _
ByVal e As System.EventArgs) _
[code].....
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Nov 14, 2011
I have a Windows Service project designed to monitor an email account and make entries into a SQL Server database when certain emails arrive. This is a rewrite of a similar winforms program that works just fine, except that it requires that the computer be logged into an account and the program started manually, which I can avoid by using it as a service.In the service I maintain a list of logged messages - basically just a string and a timestamp indicating that something has happened. (That list is shared out over a WCF service but I think that's immaterial, at least at the moment.) In my custom class I declare a public event, and elsewhere I raise that event. For some reason, though, the RaiseEvent isn't being run in the service. For example:
[code]...
The problem in this case is that _pc_HandleEvent isn't ever being called. If I duplicate this setup in a regular winform program, everything works like it should. What am I doing wrong? How do I get a service to handle events raised from other classes?
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