Forms :: Create A Custom Event?
Nov 17, 2010
I'm pretty sure i'm not doing this right but i hope by asking this someone can show me the right path.I've created a function that creates a label and 7 checkboxes arrays . So depending how many names i get from my database, it creates that many for the label and the other checkboxes.
Now my function is inside a module which i call in my Class Form during "Load".
So what i want to do is be able to code in an event where the user checks on one of these
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May 23, 2011
I need a coding for keypressevent in particular properties from the property grid.
It is possible to create an event for these(PropertyGrid Properties) properties?
(or)
How to create custom events for custom properties?
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Oct 23, 2010
I use a lot of picture box, label, and custom controls, all of which are oddly-shaped, and must overlap. In almost all cases, the backgrounds are not solid colored.I am using transparent .png images for the background images of many of these controls (except labels), and using transparent as the backcolor, creating a custom shaped control. However, when these controls overlap, the one towards the front will not show any controls behind it through the "transparent" background. This is getting annoying, because I cannot use any alternate object arrangements.How do I create true custom-shaped forms?
P.S. Some of my controls have extremely irregular shapes, so using simple line and curve drawing functions is probably not an option.
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Jan 19, 2012
following code from c# to visual basic, and I'm coming up with the following error: 'Public Event ItemCheck(sender As Object, e As System.Windows.Forms.ItemCheckEventArgs)' as an event, and cannot be called directly. Use a 'RaiseEvent' statement to raise an event.
[Code]...
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Nov 14, 2011
I've search the net in order to create a custom control but nothing I find is worth looking at, The main thing I want to do is create a skinengin via DLL and import it in my vb 2010 then using or creating some sort of skin builder where I can create a full setting file which contains all the details of the customization regarding the Form(Look, Feel and the controls such as a menu), I have used Iriskin and multiple apps doing this for me and when a user installs my application they still recieve a message about buying the registered DLL file, I would like to create it completely from scratch.
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Jan 6, 2012
I have a form that depending on results from a table would create a number of buttons using code at runtime. This could range from 1 to 20 buttons. What I am struggling with is creating a generic mouse over event for each of these buttons? The reason why I want a generic mouseover event is that depending on the text on the button I would do certain things, instead of duplicating the same code in individual mouseover events. I am writing in VB.Net.
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May 27, 2011
I have created a custom control with an event called "valuechanged" When I try the following line to: AddHandler
ScheduleMain1.ValueChanged,
New
System.EventHandler(AddressOf[code]......
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Mar 27, 2011
I have a vb.net windows form app that I am deploying as using the visual studio deployment project. The app needs to write event logs to the application log in the event viewer. For reasons explained here I need to create the event source during the installation process. Something like this to run as part of the installer
If Not EventLog.SourceExists(My.Application.Info.ProductName) Then
EventLog.CreateEventSource(My.Application.Info.ProductName, "Application")
End If
That code needs to be run during the installer with elevated privileges. So my questions are:
How do I execute that code above as part of the installer? How do I get the installer to do the UAC prompt to allow that code to run as part of the installation?
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Nov 11, 2009
Can I create new dialog results for my dialog forms? And then use them with Form.ShowDialog method?
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Feb 6, 2009
This is what I would like to achieve:To create a custom messagebox, with varying number of buttons with custom .Text descriptions, and other features. I intended to have a property array that would be redim-ed and have values (.Text values) set by the calling class:
[code]...
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Dec 29, 2011
how to specify a custom icon for display in the toolbox window when you create your own custom control? Something other than the dreaded "gearbox" icon.
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Dec 29, 2010
If I have a large number of classes, each similar to the other in certain aspects (they all share a common base class, but each does things differently), and I need to create Windows forms for each to allow easy changing of their values through a GUI? Create one matching form for each object in VS' forms designer, Or Use code to create the forms dynamically at runtime.
#2 makes the most sense to me, because a lot of these objects will share very common features of the form, notably "Ok" and "Cancel" buttons. But one object might need to draw a textbox on the form while another might need to draw a combobox. Not to mention, if I want to put icons on the "Ok" and "Cancel" buttons, I'd have to do this for each copy of the form in designer, and that sounds like it could get out of hand quickly.But is drawing forms through code sane? VS' forms designer is pretty sophisticated and designed to make life easier. Am I wise to consider ignoring its functionality and diving into the trench warfare of forms design through code? Or are there examples of automating form creation based on an existing object's properties?
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Dec 19, 2010
know how to create a custom file association ( a custom extension ) in VB .Net and how to open it on the application
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Jul 21, 2006
With VB.net, I'm coding a simple application to get more used to the new .Net format.
I'd like to save all the information to a 'new' database file. how to create a database on the fly, once that is done i'll be able to connect to it no problem, but actually creating the file is proving difficult to work/find out.
Also, with vb.net and the newly created custom file, how can it be made to automatically open that information with the program?
Is there a method in installation to associate the file type with the new program? How can i check when the program loads if a database file has been 'double-clicked' (rather than just running from the .exe of the program) and proceed to load the data?
EDIT1 - Extra InfoThe windows application has many different fields and content etc, then i need to save that to a file that could later be loaded by 'double clicking'. I assumed the easiest way would be to create a mini-database for each unique file
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Jan 20, 2010
ApplicationExit Event and Cancel event in app with no forms?
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Nov 24, 2010
I have two forms: main and sub
I need to access the even procedures like textchanged,lostfoucs,changeindex of sub form so that it can be used in main form all controls placed in sub form are included in main form and hold same name and values as of sub form how should i call it from main form to access all procedure of sub form
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Feb 7, 2009
I am not a new coder, but i am not a know-it-all. I have been watching some of those NVidia fluid videos, and got jealous. I thought "Why can't i do it?" I'm not good enough for OpenGL or some other 3d engine, but i thought i would try it in 2d.
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Dec 6, 2011
I need a event that receives the position/location of an control, for example a Image-control, which i move with an animation.So I found some code from this post that I need, but I can't figure out where to put the code.Should I put it in some event e.g. the windows loaded event or what? What am I missing?
C#:
var topDescriptor = DependencyPropertyDescriptor.FromProperty(Canvas.TopProperty, typeof(Rectangle));
[code].....
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Mar 5, 2011
I am creating an application which has n numbers of tabpages in three different tabcontrols. some of the tabpages are having graphs and rest of them are having some other calculations based on the data of focused graph tabpage.What i want is when user selects different tabpage containing graph the data of the graph tab should be passed to all the other tabpages using the data to calucate. There is one way which i get is to loop inside all the tabpages,but i want to raise an event from the graph page and handle the event in all the rest of the calculation pages.
[Code]...
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Mar 6, 2011
I am trying to develop a VB .NET Windows Form Application FTP client that uses the C# .NET FTPLibrary.dll that I obtained from The Code Project article "A Windows FTP Client". I am also converting and using significant amount of the code from the article which, for the most part, I have been able to successfully convert to VB .NET using Developer Fusion's C# to VB code converter. The dll has a new message handler (NewMessageHandler) which is used in the article's main form (frmMain). There is a C# .NET statement in the SetFtpClient() method of frmMain that I am unable to convert to VB .NET. I have boxed the statement I need help with converting to VB .NET with " ===== " statements. [code]
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Jan 31, 2011
I want to create a custom class that has inside an array of another custom class (see my code below) but when the programm runs is crashes. Why? What is the right expression???? Plz help I'm a newbie in VB.net.....
Public Class ctrarray
Public nameclass As String
Public ctrlindex(glvar_spaces) As ctrlindexclass
End Class
[code]....
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Jan 24, 2010
I need two seperate lists, which every item is Integer, String, Bitmap - and one which every item is Integer, String String. However I don't know how to do this, or even where to look - I've googled for custom objects and custom object lists. What I'm trying to do is this.Custom Object1 is Integer, String, Bitmap Custom Object2 is Integer, String, String
In one thread I'll be adding items to List1(Of Object1), and processing them, and adding the results to List2(Of Object2), however I need to be able from other threads to look at the list and say only give me the items where Integer = (my thread ID), is this possible? Any help, or even links to information that would be relevant to this request would be helpful?
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Jun 30, 2010
I have a problem to handle an event on a custom control a have on a form.... So first i made a custom control that is just a groupbox with some labels and txtboxes. That control i add dynamically to my form like this (Baycontrol is the name of my control)
Declaration
Code:
Friend Bay(29) As BayControl
Add the controls to Form
Code:
For Simindex = 0 To 29 'Me.Bays - 1
[Code].....
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Mar 10, 2010
I want to let TextBox control TextChanged event fire only when there are more than one character in the TextBox.
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May 10, 2011
I've got a page (aspx) that contains a usercontrol (ascx).On postback of the aspx, I'd like to read some control values in the ascx. So upon reading some good articles, I created an event in my aspx that fires on postback.The event handler is in the ascx, and simply writes the values I'm interested in to the viewstate so that the parent page can read them.The problem is my event handler never gets hit, even though I see the event is raised as I step through the code. So my code bombs when trying to read the viewstate (which is empty)[code]Oh, did I happen to mention I'm dynamically loading the ascx? :)
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May 13, 2011
(using vb 2008 I am learning the workings of Custom Events. I think they might solve the problem of being unable to declare nonserialized events in vb2008. However, do custom events follow any sort of inheritance pattern like classes
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Jun 22, 2010
I never did custom events and would like to make a sub procedure execute via a custom event from another form that does not have the custom event defined. For example I would like to raise the event from my ok button in one form and have the event in the other form execute. How to set this up using code examples?
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Jul 19, 2009
I create several Labels using this code:
Dim L As New Label
AddHandler L.Click, AddressOf Labclick
Me.Controls.Add(L)
I know how to do click events but how how do i make an event for it that does something when the mouse hovers over one of the Labels?for example if the mouse hovers over a label it changes text color to RED...when mouse leaves it changes back to BLACK?
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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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Dec 8, 2009
I'm writing a custom textblock control thats populate hyperlinks and raises event when clicked to hyperlink.
I wrote this code but I got stucked.
My code is :
Imports System.Text.RegularExpressions
Public Class CustomTextBlock
Inherits TextBlock
[Code]....
This code gives error at RaiseEvent Klik(sender, EventArgs.Empty)
Error is : Cannot refer to an instance member of a class from within a shared method or shared member initializer without an expliticit instance of the class.
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