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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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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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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May 21, 2011
I have a single solution with 2 projects. One project contains all my forms and some other modules and the other project has 1 module with 1 giant class in it. I try to click on properties and change the output type, but it won't let me make it a Class Library, the only 2 options are "Windows Application" or "Console Application". The startup object is the module, and the project has references to a socket component.
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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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Nov 21, 2009
How to get events from dll?Yeah, but i dont know how use addhandler in a function.
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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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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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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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Jul 13, 2011
I have the following statement and the function 'InitialiseOsTransform' is in a Module which is in the project.
If InitialiseOsTransform() = False Then But instead of the code going into this function it goes into the Paint function.
I have used the similar code in another project and it works correctly.
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Feb 14, 2010
My program's code is getting a bit jumbled with all the subroutines for button clicks, etc. I want to move them into a more manageable set of modules, but I get the following compile error:
Quote:
Handles clause requires a WithEvents variable defined in the containing type or one of its base types.
For each event. Clearly I have to define a WithEvents variable, but I have no idea how or where to.
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Jul 24, 2009
I have a legal copy of a dll that I've used for years in VB6. Now I want to use it in VB.net. However, when I try to reference it, VB.net won't let me, displays an error. Tried to register the dll, got a no entry point error.
[Code]....
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Apr 7, 2010
Public Function Add(ByVal Number1 As Integer, ByVal Number2 As Integer)
Try
Return Number1 + Number2
[code]....
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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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Apr 22, 2009
Let's say I have a custom class called CustomItem that holds the Name and 'SomeProperty' properties:[code]Now, on the click of a Button, I want to select the CustomItem whose SomeProperty is equal to "Property 4". Of course, this is just "Item 4", but the names and properties are not that correlated in the real application than they are in this example.I have spent ages a long time ago figuring out how to do this. I could not directly set the SelectedItem, because I first need to get the CustomItem that actually matches my condition (SomeProperty = "Property 4"). My solution was to use a loop, looping through each item in the ListBox, and setting the SelectedItem when the right property has been found.[code]Now, is this the correct way to approach this problem? Is the LINQ query correct, or can it be done easier, without the casting? Also, is the LINQ query faster than the For loop, especially for a large amount of items? I expect it to be, but I don't know how to test this.
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Dec 15, 2009
I am writing a control application for an inteface card. The complicated work of initialising communication with the card is written and working fine. However, my problem is to update the text in a dialog label on the communication interface form from a module that contains all the coding for accessing the inteface card. From the module, the interface dll returns data that describes some typical connection errors and the module then calls on Public Subs in the form to display error messages; for example:This is the Public Sub in the Module that initiates communication with the interface card:
Public Sub OpenDeviceInterface()
DeviceID = 1 - My.Resources.DeviceID
h = OpenDevice(DeviceID)
Select Case h
Case 0, 1, 2, 3
[code]....
What happens when these Public subs are called from the module is that the MSgBoxes I made to test the routine show up but the label text doesn't appear.I've tried; Refresh, on the label and the form without success...
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Dec 16, 2010
I've been coding a Windows applicaton for the past seven months but there aren't a lot of "windows" in the application so I have a question on getting and returning data from forms. I display a form and the user makes a listbox selection then presses Ok. Normally I can proceed from there (in a class module) with values from the config file, but sometimes his selection will require me to ask for more information. So I want the class to display a form, pass control to it, then when the user hits OK on this form, return to the class. What is happening is the class continues with all its inline code and function calls and doesn't show the form until the end of its current function.
Dim flClientInputFile As New CFile
Dim flPreparedOutputFile As New CFile
Dim lRecordCount As Long
Dim sProcessing As String
Dim sTest As String
Dim frmAbc As New frmAbc
frmAbc.Show()
frmAbc.Activate()
x()
When I run and step through this code, I find I'm in x() before I even saw the form. x() needs the data the user has entered on frmAbc in order to continue.
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Feb 17, 2010
In VB6 I always wrote my apps using Sub Main as the starting point. I see in .NET I'm able to wrap it in a shared class (see [URL] for example). However, the downside is that I can't declare any class-level variables, because of course the class is never instantiated. Being shared, it limits what the code can do. So, any benefit to use a shared class and shared sub main which I'm missing here.
Otherwise it seems using a module (as in VB6) provides a lot more flexibility. Of course, I should also ask if "Application Framework" is really the way to go for real-world apps, or if it's only there for beginners and real-world coders turn it off and use Sub Main instead? If so, how are the events "UnhandledException" and "NetworkAvailabilityChanged" done if App Framework is turned off?
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Mar 12, 2011
Solution has 3 Class Libraries and 1 Windows Form application projects. For no apparent reason, one of the Class Libraries keeps loosing its Settings. These are primarily configuration strings. When I try to add them back in the IDE, they disappear again without explanation.
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Aug 8, 2009
I have a class library called Encrypt.dll that I added to my project (that class encrypts strings..). I have a problem that when I drag the app out of the Release folder, it crashes, giving me this error:Could not load file or assembly 'Encryption_Class, Version=1.0.0.0...' or one of its dependencies. The system cannot find the file specified.What am I doing wrong?I added it from the Reference tab->Add->Encrypt.dll
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Nov 23, 2009
I have a DLL file i have made in VS2008...builds with no errors...but when i go to add it to my servers component services i get an error...i have attached a screen shot of where i am getting the error and what the error is...i even tried to make a simple single class dll with the following:
[Code]...
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Apr 17, 2009
Is there anyway to install a class library on a workstation so any application can call it without it being bundled with that app?
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Dec 30, 2009
I know you can create a class library in C#.NET and then use that dll in a vb.net project and everything is just peachy. But can you use C++.NET and VB.NET/C#.NET in that manner?
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Mar 3, 2010
It's been a while since I last posted something, but this attracted my attention. Since many of my programs share the same type of code, I decided to dump it all in a class library for other programs to use.
Now I have a problem, Windows Forms in a class library can't be displayed. There is no "Show(Dialog)" command, only some for event handling. All properties are gone as well. The only way I managed to display a form is by making it as a new variable: 'Dim f as windows.forms.form
But this won't work because of the enormous amount of handlers added to the original.
How can I show my (TextureBrowse in my case) Dialog so other programs can use it?
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Sep 27, 2011
I have not used a module in a long time. I am get an error when i try to call my sub openDatabaseConnection that is in a module called dataaccess. i amtring to call this method in my ui form code but i get the error as so: The type initializer for 'bsoDetailsDB.dataAccess' threw an exception.
My code:
Public Class Form1
Private Sub btnOpen_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOpen.Click
OpenDatabaseConnction()
[CODE]........................
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Mar 13, 2009
i saw in many website that there's a combobox that display all the world countries to choose one of the country as your country.so i want to do this in program.is there any class or library that have all the world countries and then i add them to combo box?or do i need to enter them manually?
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Mar 16, 2009
I'm not sure if this is the right forum or not but...I've written my first VB.NET 2008 Express Class Library project (addin dll) and now I need to deploy it. I see Windows Form Applications have a Publsh tab (ClickOnce) in the project properties window but my class library project does not. How do I deploy a VB.NET 2008 Express Class Library project?
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Nov 8, 2009
suppose I have the following hirarchy:
Public Class PrimalClass
Public Event SomeEvent()
End Class
Public Class BaseClass
[code]....
this code compiles and runs.what I want to do, is remove the event SomeEvent in BaseClass so that DerivedClass won't be able to register a handler to it.
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Feb 3, 2011
Namespace MyClassLib
Public Class MainClass
Public Sub New()
[CODE]...
Is it possible to make it so that the user using the Class Library has to declare a new Instance of MainClass() before using Subs/Functions in Class2 or Class3?
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Nov 16, 2009
I' ve got a short question concerning BackgroundWorker.Is it possible to have the main code for the BGW in one class and the long process for the BGW (DoWork) in another class or module?
I couldn't find anything helpful on the internet.Here is my code - DoWork in a separate class doesn't work:
[Code]...
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