Catch Events On Form From Class Library (.dll)?

Nov 21, 2009

How to get events from dll?Yeah, but i dont know how use addhandler in a function.

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Declare Events On Class Library (dll) And Catch Them On Form?

Nov 21, 2009

I need set events on a class library and catch them in an form.

For example, I run a sub in the dll and I need "receive" the event that the sub in the class is running.

The dll is creted by me in vb, but i don't know how raise events on it to be catched in the form.

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Raise Events From Class Library To Form Using Module?

Jan 25, 2010

i've a app that starts from a sub in a module, do a few things, and then load the form.

But it doesn't work :/

Here we execute dBase.AddTemporalFilepath

module.vb
Public dBase As New Core.clsDatabase
Public Sub Main()
FurBase.Directory = My.Application.Info.DirectoryPath

[Code].....

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Class Library Events?

Mar 6, 2012

I`ve made a .NET component in C#. After that, i`ve created a class library in VB.NET and added this C# component and a couple of buttons to the library (creating another component now with buttons). So far, so good.The problem is: when i use this final component (vb.net class library), i want to link all MouseClick Events of its own components (buttons and C# component). In other words, when i add this final class library to my VB solution, it has its own MouseClick event. But when i click inside it doesnt raise the click event unless i do not click in the buttons or in the C# component inside it. I want to raise this event in the application wherever i click (inside or outside its own components).

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Raising Events In A Class Library Exposed To COM?

Dec 20, 2010

I'm trying to write a wrapper to a service, which will be used by an existing VB6 project. I've got most of the basic framework working, except for one important aspect: I can reference the wrapper in a VB6 project and subs/function calls etc. work as expected, but events do not. The events are visible in the VB6 app, but they never fire.

VB.NET Code:

Public Event Action_Response(ByVal Status as String)
Public Function TestEvent()
RaiseEvent Action_Response("Test Done")

[Code]....

So, the cmdTest button code prints 'Done' as expected, but the Action_Response event doesn't fire. Is there something else do I need to do to get the event to fire?

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Rising Events From Class Library Called From Module

Jan 26, 2010

I've an app that starts to work from a module wich should load a form an do other things with a class library who raise an event an the form shoud cath it.The problem is that applicarion.run(frmMain) displays the form in the same thread the the code stops work while the form is open. And I need that the app works in this way because the user need to send files to the app using args and this avoid that the app init another instance of it (in other code) and update the form with the info when the event is raised.[code]

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VS 2008 Rising Events From Class Library Called From Module

Jan 26, 2010

I've an app that starts to work from a module wich should load a form an do other things with a class library who raise an event an the form shoud cath it. The problem is that applicarion.run(frmMain) displays the form in the same thread the the code stops work while the form is open. And I need that the app works in this way because the user need to send files to the app using args and this avoid that the app init another instance of it (in other code) and update the form with the info when the event is raised.

[Code]....

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Catch Key Board Events With The Form Keydown?

Dec 3, 2009

I am trying to catch key board events with the form keydown.

I am able to capture all the keydown events except the "Enter" key. When the enter key is pressed this code does not even fire.

Private Sub FrmMain_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
Select Case e.KeyCode

[Code].....

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Control Form With Class Library

Oct 27, 2009

I have trouble to control my form using with the class library. I am trying to set the form to maximum and set the form border to none. There is an error in come to the end of the statement next to the test.myform.[code]The error I have received is Object reference not set to an instance of an object.

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IDE :: Using A Windows Form .exe As A Class Library .dll

Jun 10, 2010

I have a Windows Form application compiled to a .exe that contains standard classes and one windows form class. I would like to reference that .exe in another project. The dialog to add references shows .exe, I add the file to my project, I can see the classes from that file but when I run the second executable I get a "cannot load type" error when I try to access the classes contained in the referenced .exe

That behavior seems strange to me since the IDE accept the .exe as a reference and even "intelisenses" its classes.

I do this because I want a standalone version of the form, but I also reuse it in other project. Am I doing it wrong, what's the best practice in my scenario? I'd rather not maintain both a Class Library project and a Windows Form project that includes the same code.

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SetCompatibleTextRenderingDefault In .NET Class Library Containing A Form?

Mar 18, 2009

I have a .net class library with a com class that calls a form. I want to to SetCompatibleTextRenderingDefault(false) to ensure the form fonts look nice.

If I run the command in the class constructor I get the following error:
SetCompatibleTextRenderingDefault must be called before the first IWin32Window object is created in the application.

Edit1: To clarify, I get this error when initiating the class from a .net test harness, if I call it from a VB6 app then I simply get "Automation Error"

Edit2: Is the answer that I cannot use SetCompatibleTextRenderingDefault in a com class when calling from a vb6 app?? Maybe it's the "parent" app that needs to call this method and as such a vb6 app cannot?

how can I make the fonts look nice in a .net class library form called from a vb6 app?

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Forms :: Running Form In Class Library?

Jun 20, 2012

i have a query iam able to add items in listbox from form 2 to form1 from windows application in vb.net but iam unable to add items in listbox from form 2 to form1

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Make Form Private In Class Library?

Feb 27, 2012

I'm programming a class library, i want to add form but i need this form to be private so it cannot be seen from outside the library.

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Adding A Startup Form To A Class Library Application?

Mar 25, 2012

I have a project that was created as a class library application. It does not have any start up forms. How do I add and show a start up form to this project? Where does this application start since there is no Main Sub that I can find. I am using Visual Studio 2008 express.

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VS 2010 Class Library - Cannot Use Form / Screen Or Bitmap

Feb 5, 2011

I'm trying to create a DLL with some useful methods and subs for my use. But when I tried declaring an object for Form or using the keyword Screen, Bitmap, etc.. gives an error saying that "The type 'Screen' is not defined" and like that..

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MSDN Website - Link A Created Class Library To A Form?

Oct 11, 2010

I am in the beginning stages of learning VB.NET and all I want to know is how you link a created Class Library to a Form? I've seen code at the top of the designer window that says <dim objSomething as New somethingClass> What the heck is that and how does it work?

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VB2010 Class Library: Create A Static Library Instead Of DLL?

Jun 21, 2011

I have a Visual Basic Class Library project. It generates a DLL. Is there a method to generate a static .LIB to which I can do a static link?Alternatively, can I do a static link against a DLL?

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How To Catch AD Changes' Events Like Password Changes

Nov 24, 2009

I am working on a personal project and I want to create a windows service (in VB.Net), that monitors changes in a local (on the same machine) Active Directory. Specifically I want to catch AD password changes so that I can update a database. There are some applications that do this so I know it is possible.

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Handle Events From The Main Form In A Separate Class Or Module?

Feb 24, 2012

I've been searching for the answer for a while but can't find it yet. Basically so far I have a simple VB.Net form with one button.I would like to make a class or module that can handle events from the main form. This is my code so far but it doesn't seem to work.

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Catch Events On Runtime Objects?

Mar 5, 2009

I'm creating a form with a few buttons and a combobox at runtime.dim f as new form

(blah blah)
then the buttons acceptDescription and rejectDescription are set up...
then the combobox descriptionCombo is set up...

[code].....

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Catch All Un-handled Exceptions In A .net Assembly (library Type, Not Application)?

Apr 2, 2011

I have an assembly containing a number of classes. This is a class library type assembly, not a windows forms application. It's also single threaded.Is there a way to catch all un-handled exceptions so that I can log them?

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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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C# - Catch Events In Multi-threaded Application That Can Be Watched By Main Thread?

Dec 4, 2009

I have a console application (VB.NET). When it is started, it spawns worker threads to find work in the database and do the task, then look for the next task (A workflow basically).

The problem that I have is that I have my Event Handler in the main thread that spawns the worker threads. Those workers, if they error, raise an event to a public delegate. However my main thread is not detecting these events, and I cannot figure out how to make it. My intention is to do all logging (text/database), email alerts, and restarting the worker to find another task that is not errored. (This will be expanded in the LogErrorMessage routine and such, for now I am just keeping it a simple Console.Writeline so that I can see if the method is being fired or not)

Here is the code around what I am trying to do:

Logger Class:

Public Delegate Sub LogDelegateError(ByVal Ex As Exception)
Public Class EventLogger
Public Event EventError As LogDelegateError

[Code].....

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Catch' Cannot Catch Type 'Object' Because It Is Not 'System.Exception' Or A Class That Inherits From 'System.Exception'

Aug 10, 2010

I'm getting 'Catch' cannot catch type 'Object' because it is not 'System.Exception' or a class that inherits from 'System.Exception'. and 'Expression detected' Code underlined in blue: Catch obj1 As Object When (?)

Private Sub OpenJAMem()
Dim num3 As Integer
Try

[code]....

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Adding A Windows Service Class To A Class Library

Feb 14, 2012

I have a class library in VB.NET that does a NET-envelope for an USB device driver.There is only one function of that driver that I could not envelope in a traditional class, but I had to put it in a Windows Service as described here:Sharing a class property (field) between applications.The Windows Service works fine, but I have now two projects for my NET-envelope: the one with the class library, the second with the windows service and I do not like the idea to maintain two distinct projects for the same driver.Is it a good practice (or even if possible) to add a windows service class to a normal class library (without creating its own project as described in the vb tutorial)?I know, in any case I should create a separate setup only for the windows service, but in this way I could have together all the classes that envelope my usb device driver in only one project.

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Creating An Instance Of A Class From A Class Library?

May 18, 2010

I've createda vb.net class library where I've defined a number of small classes... nothing complicated, just working with strings, sending emails, etc.In another project, I reference the class library and I'm seemingly able to create an instance ofone of tclasses - intellisense shows me all of the plic properties, methods, etc... all looks perfect. No compile errors at all, nothing b gumdropsand lollipops.When I run the app I'm working on that references the class library, it fails at the point where I'm creating an instance of the class and gives me a vague exception, "System.TypeLoadException".

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Private And Public Class At Class Library

Mar 12, 2011

I'm posting this there is a relationship with my previous post [URL]

I have two projects, namely:

1. Project1 (Windows Application)

2. Project2 (Class Library)

in Project2 there are several classes:

* frmLogin.vb
* frmCustomer.vb
* clsGlobals.vb

in my case, I want to frmLogin.vb and frmCustomer.vb not called in Project1 and I can only call is clsGlobals.vb

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Made A Class Using New->Class Library

Nov 17, 2009

I have made a class using New->Class Library. I have 2 constructors, 1 function (that computes length of circle), one subroutine that computes area of circle, and main subroutine.

Public Class Class1
Class Circle
Dim rad As Double

[CODE]...

My problem is when I try to run the program: No errors of syntax.

What I must do? I need to right click in solution explorer add new item->add->class and copy here this code?

After I write the code I chose from the vb menu: Build->Build Solution_name

Before writing the code I choose File->New->and selected class library then save all to save as a project.

Or class library is only a dll file that runs with a windows forms application. (that is added after i write the code for write library).

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.dll In Class Library?

Dec 29, 2009

there's a lot of dlls i've got one in the Release folder and one in the Debug folder under bin, there seem to be one in the obj folder as well.they all seem to work fine, but which should be the correct one?

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Class Library Or Not?

Oct 18, 2010

I have two projects; A and B, where B needs to use some classes that are in project A. Hence, I added B to A's solution, and in B I added a reference to project A.

Is that sensible? Or should I rather put those classes in a class library?

I see that if I further want to open form/program B from a menu option in project A, then A needs a reference to B. Which would not be possible if B already had a reference to A. However if I use the class library for the common classes, then it's ok as B doesn't need the A reference.

Does this sound logical? It would be nice to know what are typical reasons for putting projects in the same solution, and if it's advised to use libraries aggressively to refactor common code between two projects, even if it's just a couple of classes.. Yet I've never made my own library, so a bit unsure on when to use it.

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