[2005] Handling Events With ToolStripMenuItems Created With Code?
Jul 24, 2009[2005] Handling Events With ToolStripMenuItems Created With Code
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[2005] Handling Events With ToolStripMenuItems Created With Code
Jan 24, 2009I am trying to create a ContextMenuStrip where I add a certain amount of ToolStripMenuItems based on how many columns are in a DataGridView via code. I am wondering, since I am creating all these ToolStripMenuItems in code, how would I handle the "CheckStateChanged" event on all of them separately? Or how can I figure out which one of those ToolStripMenuItems was clicked?
Here's a code example of what I mean:
Private Sub CreateCMS()
Dim CMS As New ContextMenuStrip
Dim TMS_Main As New ToolStripMenuItem
[Code].....
Debugging - Handling VB.NET Events In VB6 Code?
May 12, 2009I have some VB6 code that instantiates a class which handles events that are being raised from a VB.NET component. The VB6 is pretty straightforward:private m_eventHandler as new Collection
public sub InitSomething()
dim handler as EventHandler
set handler = new EventHandler
m_eventHandler.Add handler
m_engine.Start
[Code]...
My problem is that when I debug the VB6 program, the first time InitSomething gets called, the event will not be handled (the VB6 event handler is never entered). Subsequent calls to InitSomething does work.
Everything works as I would have expected when I run the program outside the debugger. At this point, I'm not even sure if this is something I should be worried about.It may or may not be relevant but the VB.NET was converted from a VB6 using the Visual Studio code conversion tool (and subsequently manually cleaned up).
Use ToolStripMenuItems Without Mouse Events ( Click Or Double Click Event )?
Apr 4, 2010I have a solution in Vb.NET 2008 windows Form with ToolStripMenuItems, but I need to implement menu navigation without any mouse intervention.I only found mouse events In ToolStripMenuItems, MenuStrip, etc.All MenuStrip and ToolStripMenuItems are created programatically, reading user permissions from Database, then add a handler to manage the events, but the client don't want mouse interaction, he wants only keyboard inputs only ![code]
View 2 RepliesCode For Creating Trial Version Of Software Created In .Net 2005?
Dec 12, 2007I have created a windows application in VB.Net 2005 using MS Access as backend.Now before delivering its setup to client I have to create its trial version of 30 days and 60 days.How to do this ?Also my setup should be installed only on one computer.I mean my setup copy should be used for one time only.I know how to deploy the project i.e. I can create a simple setup of my project.
View 12 RepliesHandling COM Events In .NET?
Jun 7, 2009I'm calling the SQLDMO 8.0 COM library from VB.NET (using a PIA I generated with tlbimp) in order to backup a database with percentage completion notification:
Dim server As SQLDMO.SQLServer = Nothing
Dim backup As SQLDMO.Backup = Nothing
Dim restore As SQLDMO.Restore = Nothing
Dim backupAbortable As Boolean
Dim restoreAbortable As Boolean
[Code]...
Handling Events In .Net?
Jan 22, 2009I have a component written in C# which exposes an event which the clients can Handle. I would like know how to handle this event in VB.Net?
View 1 RepliesA Plugin Architecture In .net And Handling Events
Nov 5, 2009I need to write an app that that will iterate over our database, and perform various anaylsis on each record. In order to do this (partially for the learning exercise in creating plugin support) I want to use a Plugin model.
Currently, I have a simple Interface in my main app, which plugins can Implement. My app then loads all DLL's in a folder looking for ones implementing the Interface.
As you can see in the pseudo-code below, I have to keep performing a loop through all loaded plugins calling the process methods.
Sub ProcessData()
For Each Record In MyDataSet
For Each Plugin In MyPluginCollection
[Code].....
Handling Events Fired In Constructors?
Nov 8, 2009Work = New ExampleWork()Here the Work is a withevents variable and I've used the handles clause for handling various events fired by the ExampleWork object. However the event handler will not get assigned till the constructor of the ExampleWork returns. Now how can I handle any events fired from the constructor? I can move the constructor logic out to a separate method and call it after the constructor has returned and thus handle all the fired events including events fired from constructor. However it doesn't look good
View 2 RepliesHandling Events For An Array Of Controls?
Feb 12, 2012Handling Events For An Array Of Controls
View 3 RepliesVS 2010 Handling Multiple Events At Once?
Nov 23, 2011I took a VB class a couple semesters ago and I did really well. Unfortunately, it seems as though we only covered the very basics within the class, as I feel rather clueless right now.
Here's my issue. I'm trying to write a program that will encode notes (like music notes, A-G#) which are entered by the user, into digits, 0-9. Now I have the system laid out, in that 1-8 will represent A-A, while a 0 or 9 preceding a digit will represent a flat or sharp respectively.
Now my question is actually rather basic, but I just can't seem to figure out how to do this. The user will enter the note sequence by clicking on buttons (12 of them). What I'd like to do is create one sub that will handle all possible button clicks. I suppose it's possible that I could have separate subs for each and every button; but it just seems more efficient and cleaner to have one sub that manages them all.
The part I have completed and working properly will display a message (the same message) in a messagebox each time any of the buttons are clicked. So I have the "Handles" part working for all 12 buttons. But what I'd like to do is write code, perhaps "If" statements such that If "btnA" is clicked, then say "You clicked Button A," and If "btnASharp" is clicked, then "You clicked Button A Sharp," and so on. Is it possible to do this somehow by recognizing which event was actually triggered?
VS 2010 Handling The Parent's Events?
Jan 28, 2012I am trying to make a UserControl or Component which can be dragged from the Toolbox onto a container control such as a Form or a Panel. Its purpose is to change the behaviour of that container. In particular, I would like to add functions to the container's painting and mouse actions. I DO NOT want to have to write code for the container itself -- that's the whole point of the Toolbox object.
I can do this by getting a reference to the object's Parent (or Host in the case of a Component) and handling its events, as this example illustrates:
[Code]...
However, I have heard that handling the events of a parent control conflicts with OOP principles. So I would like to know, does that objection apply in a case like my example? If so, what are the drawbacks? And what alternative techniques are available?
.net - Get Event Type In A Sub Handling Multiple Events?
Apr 14, 2011I am creating a program using Visual Basic 2010 Express.
I want to make a Sub handling both MouseHover and MouseLeave events. Is this possible? And if possible, how do I differ between MouseHover event and MouseLeave event?
.net - Handling Events For Late-bound Objects?
May 7, 2009I would like to use MS Office automation and have event handlers that fire for user-triggered events. For example, if the user clicks the save button in Word, I want to intercept that event and execute code in my program.
I don't want to be bound to a specific version of Word because I don't know what version my user will be running, so I instantiate a reference to Word using late binding. The problem is that the AddHandler and the Dim WithEvents commands require specific references to an object that is known at design time. Given this, how can I define an event handler without having an early bound reference to a specific version of the Word library?
I can try to a reference to an earlier version of Word with the expectation that newer versions of Word will be backwards compatible, but this seems kludgey and risky.
C# - Handling Control Events From Repeater Footer
Aug 1, 2011Assuming I have the following repeater.
[Code]...
But this has failed (The event is never raised)..
Event Handles - Handling Multiple Events In A Sub
Dec 3, 2010I had a question about handling multiple events in a sub, like this:
Private Sub Form1_MouseUpOrDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseUp, Me.MouseDown
'do something
End Sub
Once the sub is called, is there any way to tell which event called it? (Whether it was a MouseDown or a MouseUp event?) Right now, I am doing a work-around as follows... having each event call the same sub and pass the info in. But it would be nice to not have that overhead.
Private Sub Form1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseDown
ExecuteMouseUpOrDown(EventTypes.MouseDown, sender, e)
End Sub
[CODE]...
Don't use ACCESS, EXCEL, or a TEXT FILE as a database. If you want your program to use a "local database", without any of the hassle of setting up a MS SQL or MySQL server, just click this link: >>> SQLite <<<.
Events - Handling Multiple Textboxes Upon Click
Aug 10, 2010I have multiple textboxes which I want them to perform the same thing upon clicking them. By default I can use the handles textbox1.click for 1 single textbox as shown below but I am not sure how to do handle multiples of them. Of course I can write a handler for every single textbox but I have about 50 of them. I am sure there must be a more efficient way. [Code]
View 4 RepliesHandling Events From User Control Containing A WPF Textbox?
Mar 22, 2010In order to take advantage of the spell checking ability of WPF textboxes, I have added one to a user control (with the use of elementhost). This user control is used in various window forms. My current problem is trying to handle keyup events from this textbox but the windows form is unable to "get" any event from the control. I can access the properties of the textbox just fine (i.e. text, length, etc.) but keyboard events don't seem to work.I have found, however, that the following will bring back events from the WPF textbox:
Public Class MyUserControl
Private _elementHost As New ElementHost
Private _wpfTextbox As New System.Windows.Controls.Textbox
[code].....
The user control is now able to do something after the PreviewKeyUp event is fired in the WPF textbox. Now, I'm not completely sure how to have the window form containing this user control to work with this.
Handling Multiple Keypress Events In VB 2008
Oct 21, 2009I am new to VB but I want to find this out. For example there are two objects in my form and when I press W,A,S,D then Object1 should move Up, Left, Down and Right respectively. Object2 moves when I press the arrow keys. How do I make them move together and also separately depending on whether the key is pressed.
View 8 RepliesVS 2008 - Other Ways Of Handling Events Without Using Methods
Aug 5, 2010Whenever we need to handle events, we do it by creating a method which handles the event. Without creating methods; is there some other ways of handling events?
View 6 RepliesEvent Handling For Controls Created During Runtime?
Apr 18, 2012I have written a code to generate numerous command button during runtime depend on the user selection. I would like to find out how do we handle the command button click event?
View 4 RepliesEvent Handling For Dynamically Created Controls?
Aug 18, 2009I have a problem in handling the events for dynamically created controlsI am creating a combobox and a textbox dynamically when i click a Button1 for each combobox there is one corresponding textboxso the number of times i click Button1 i will get that many number of comboboxes and textboxes.i have added an Event handler to handle the ComboBox_SelectedIndexChangedWhenever i click any of the combobox the above event is triggered.So far it is working fine.Now comes the problem i have to get the selected item for each combobox in the appropriate textbox
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
combobox1 = New ComboBox
[code].....
Forms :: Handling Events From WebBrowser Objects Contained In An ArrayList?
Jul 18, 2009I'm writing a tabbed web browser for someone who is learning VB.NET, and I have got to the point where I can add/remove browser controls into tab pages, controlled by one set of buttons on the main form, but I can't handle events from the WebBrowser objects.I have tried this but it says that 'DocumentTitleChanged' isnt an event of 'Control'...
Dim browser As New ArrayList
browser.Add(New WebBrowser)
browser(0).parent = TabControl1.SelectedTab
browser(0).dock = DockStyle.Fill
AddHandler browser(0).DocumentTitleChanged, TitleChangedHandler()
I want to update the tab title with the web page title when it changes. I started using a timer to update the tabs but there must be a way to add an event handler here.
Handling Multiple Events From An Activex Component In A .NET Console Application?
Apr 26, 2010come years ago I bought an activex component to read some basic smartcard data. I created a simple form application and it has worked fine ever since. However, instate of a form application I now want to create a console application for the same purpose (the forms are unrequired and it just takes too long with multiple smartcards).
But I have been working on this for days now and somehow can't seem to get my events working. When I use 1 event, everything works fine, but as soon as I add my second event I get this error:
Unhandled Exception: System.Runtime.InteropServices.COMException (0x80040202): E
xception from HRESULT: 0x80040202
at System.Runtime.InteropServices.ComTypes.IConnectionPoint.Advise(Object pUn
kSink, Int32& pdwCookie)
[Code]...
VS 2010 - Correct Convention (style) For Raising And Handling Events
Apr 4, 2012the question is really what is the correct convention (style) for raising and handling events. When a button is clicked it is generally handled by this method. [Code]
I have recently been trying to follow this convention by creating my own EventArgs class and inheriting the system.eventargs, Then adding my own properties. The problem is as my projects get bigger/complex I seem to be writing multiple eventarg classes. I then decide to try and create a generic eventarg class but this then seemed pointless thinking it would be easier just to pass the object directly instead of wrapping it up in "someEventArg" i have created.
.net - Handling KeyCode/KeyChar Events In Windows Form TextBox Control?
May 19, 2012I have various input textboxes on my form. And based on entries made in each of the input textboxes, I update the display textbox. However, using AppendText message of textbox. I have my input textboxes set to accept only numeric values. So for each character inputted correctly, I update the display Textbox. Problem I have is when user selects Key.Back or Key.Delete, what I would like to do is do a Delete of last character in the display textbox, but I am yet to get this right. How do I delete the last character in the string that is contained in a TextBox using AppendText()
[Code]...
Add Created Cb Into Events/
Mar 14, 2012So, I'm at the stage where I have created checkboxes through the codes.Not through the toolbox.
They are added correctly to the form when I test it.Checkboxes can be checked or unchecked correctly.
But my problem is this:I want to use events mouseclick or mousehover with those checkboxes.
Add Events For Dynamically Created Buttons?
Jan 14, 2010My process is as follows:I access a database table to determine what questions to ask (20-100 questions).Each question is display along with, possibly, a "done" button.My code to do this is as follows:
If datareader("Who_Second").ToString = lbl_Your_Position.Text Then
Dim b1 As New ImageButton
b1.ID = "btn_second" & datareader("QCC_Q_ID").ToString
[code]....
What I need to do for each button is strip out what the "QCC_Q_ID" is for that button and insert information into another table of the DB.My partial code for this is as follows:
Sub btn_done_clicked(ByVal sender As Object, ByVal e As System.Web.UI.ImageClickEventArgs)
Dim MyDate As Date
Dim QCC_Q_ID, Position As String
[code]....
Two problems:1. My sub is never being called, so I can only assume that my "addhandler" is not working.2. QCC_Q_ID = e.ToString.... That doesn't seem right - is it? What I need to do is get the name of the button (btn_second13) and get just the number out of that (13). Is there any easier way to keep track of that ID?
Events For A Dynamically Created Button?
Aug 17, 2010I have made an click event for a button which creates buttons dynamically and I added events to the dynamic buttons by using addhandler but it says it the button is not declared. Here is the code for dynamic buttons:
Private Sub MenuBtnNew_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuBtnNew.Click
[Code]...
Adding Events To Newly Created Controls?
Mar 5, 2010Im curently writing an app for windows mobile (so its using the compact .net framework)It has a loop which finds out how many images are in a folder, makes a picturebox for each one, then sets the .image property to the appropriate image. It also adds the name, size, location etc.What I dont know how to do is add a mouseclick event to it?I probably would have a subroutine already written in the code which could be used, or would it have to be a new one made for each picturebox?
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