I read from a text file to see what I need to add to my MenuStrip. Each line in the text file is a new item. When I read I add the new item's OnClick event using AddHandler to get its text when it's clicked. Here are my two subs[code]....
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I have a number of UserControls that have the same event .
When I use an Object instead of UserControl, I can not use Addhandler.
Here is the simplest example of my problem: In this example error is "TextChanged is not an event of Object"
Dim obj As Object = TextBox1 AddHandler obj.TextChanged, AddressOf text_changed_event I have to use this structure, because in a FOR loop I use some different UserControls as obj. All UserControls have the same event.
Is there a way to use this structure without error?
Maybe there is a way to define a new object that covers all my UserControls.
I have a number of UserControls that have the same event .When I use an Object instead of UserControl, I can not use Addhandler.Here is the simplest example of my problem:In this example error is "TextChanged is not an event of Object"
Dim obj As Object = TextBox1
AddHandler obj.TextChanged, AddressOf text_changed_event
I have to use this structure, because in a FOR loop I use some different UserControls as
[code]....
The addhandler function works this way: AddHandler Button1.Clicked, AddressOf Button1_Clicked, However, I have an unknown object: Dim o as Object, But I can't add handler for this object AddHandler o.SomeEvent, AddressOf SomeFunction, How do I add handler for unknown objects as stated above?
View 2 RepliesI have an object that may have been inflated via a plain old DataContext, or may just have been new-ed up with just its .ID property set. There's no way to know for sure. I'm looking to rehydrate the entire object from whatever is in the database. If the object was new-ed up, I can call .Attach() on the table object and refresh from the Data Context with no trouble. But, if the object was already inflated from the DataContext I get the error: "Cannot attach an entity that already exists.". There's no timestamp field or anything like that - just an integer primary key being used to control the rehydration. I'd like to know if there's a way to conditionally attach. Here's the code - it works the way I want it to, but this seems a hackish way to go about it:
' myDC is a shared instance of a vanilla DataContext...
' myObj is an instance of a linqed-up `SomeLinqObject`
Dim tbl = myDC.GetTable(Of SomeLinqObject)()
[Code[,,,,,
I have an ASP.NET page with code-behind in VB.NET. On the ASPX page I have a Repeater with an asp:ImageButton inside the repeater and I want to catch the clicks on the button. As far as I read I have to use FindControl and then handle the copy of the original control:
[Code]...
We are migrating an application from C# to VB to meet our project's needs but stumbled upon a problem with event handling in VB.
The application uses a COM Wrapper access a scanner in Silverlight. The object is created dynamically in the code, and an event is added to "AcquirePage". This requires elevated trust of course.
Code in C#:
dynamic TwainSession;
(...)
TwainSession.AcquirePage += new AcquirePageDelegate(AcquirePageEventHandler);
As the only real "equivalent" of dynamic in VB is Object, we use:
Private TwainSession As Object
Everything is fine up to the point we want to handle an event of this Object. Because we are in Silverlight, we cannot have knowledge of the Object's structure or events, hence the need to create it dynamically. In C# we simply use "+=" to add a handler to an event but:
AddHandler TwainSession.AcquirePage, AddressOf AcquirePageEventHandler
In VB gives: 'AcquirePage' is not an event of 'Object'
I have some code to create dynamic serial port objects, now Im trying to add an event handler to the object so I can capture the dataReceived event. But the vb designer is saying ".datareceived" is not en event of 'object' in this case serialports(dComPortNum)
Public serialports(5) As Object
dComPortNum=1
serialports(dComPortNum) = New SerialPort
[code]....
I'm trying to read and load the content from the attached text file to a arraylist with the code bellow.
but what is happening is that not all the lines from the text file are loaded in to the arraylist, the reading jumps from one line to other in the text file.
Dim FILE_NAME As String = ((My.Application.Info.DirectoryPath).Substring(0, (My.Application.Info.DirectoryPath).LastIndexOf(""))) & " est.txt"
Dim lista_barras As New ArrayList
Dim lista_barras_esp As New ArrayList
[code]....
I m using vs2008 with vb and sqlserver. I just attached a .sdf database file to my project. There is a form to insert data in products table and a dgv to show that data. Everything is working fine, i inserted the data and dgv is also showing the data. But when i tried to see that data from server explorer, thr is no data, table is blank. Then again when i run my project thr is no data in DGV also. So problem is that when i entered the data and retrieve back the data in dgv,evrythng is fine,but when i tried to see my data from server explorer, data is lost. Why data is not comtted to my .sdf ?
View 4 RepliesI have two objects - one that contains some code with will fire an event, and one that contains the handler for that event. I can't "AddHandler" in the Load of the first object,because an instance of the second object doesn't exist yet. When I raise my event, I want to check to see if a copy of object2 has been instantiated (easy to do), and if a handler has been attached to the event yet (not sure how to do this).I'm also open to another recommendation about how to do this instead. If I do my AddHandler in Object1.Load, and Object2 doesn't exist yet, then it will never handle my event, even if I create it later.Right now, in the code that fires the event, I've just resorted to doing a RemoveHandler and then an AddHandler every single time the event is raised, and then I know I'll attach when the object finally exists, but I know this is a crappy method.
View 3 RepliesHow to i make a table like the one attached in vb
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How can I, download attached files from unread received mail , by VB code.
I am trying to achieve the look of the attached image using string.Format and PadLeft/PadRight but I have no success with it, anyone who could offer some help?
EDIT:The font I used is not mono-spaced and I am not inclined to use a mono-spaced font for this.
I am building a Windows Desktop software that will respond to SMS request and sending a SMS as reply automatically.
The software is ready and working just fine but it works only and only with Nokia Mobiles and the prerequisite is that Nokia's PC Suit has to be installed first before my app can work.
But now my customer wants to change his mobile so he wants me to change programming so that it works with any mobile.
change the .txt extension of the attached file to .rar 123.txt (595.23K)Number of downloads: 79 Its the whole Project file including a video in to illustrate the weird error! Since is almost impossible to describe the error! For all of you who will try to open the project using visual studio be sure to Import the files in the rar for model model file.txt and catalogue file.txt for catalogue
'Marios Solomou
Imports System.IO
Public Class DAC
[Code].....
is there a way to check how many delegates are attached to an event, let's saymybutton.Click has 10 handlers, 5 by using the Handles keyword and another 5 added by using the AddHandler method (well this is not the point, then point is that i do not know how many handlers there will be). and i would want to create another button that had all 10 handlers of mybutton.Click attached to its Click event as well.
View 6 RepliesI am trying to get the names of the USB devices attached to a computer. I saw system.management would do what I need, but. It says its not defined and I cannot find system.management as a refrence.
I am building in VB2008. Can some one point me in the right direction?
Could anyone help me to find the template design for the above form ? or any toturial Video that teach step by step on how to develop such the above form please ? (Visual Basic 2010)
View 6 RepliesI know how to display attached modules but how do i check if a file is locked by a dll.
View 1 Repliesim trying to get the number of dll's attached to a process. i been searching for an hour but i have had no luck. why its cause im trying to make a anti hack program for my friends game.
View 5 RepliesI have been getting some nullexceptions on the following lines of code...:
[Code]...
Its a text editor that i am working on. When a text is bolded and i have selected it, the button for bolding text becomes checked and same goes to the other ones like italic,underline and strikeout. but if I have selected a text with bold and italics and multiple ones, it gives me a "Object reference not set to an instance of an object." How could i solve this?
I can't figure out why my addhandler is not firing?In the Sub "CreateTagStyle" the AddHandler is not firing when the LinkButton is clicked Is there some reason that addhandlers can't be added at certain points of the page lifecycle?
<%@ Page Title="" Language="VB" MasterPageFile="~/_Common/Admin.master" %>
<script runat="server">
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
[code]....
My add handler is not correct for some reason. I don't know what I have incorrect. trying to add a row to the datatable upon formload. it says that NewM8_CustomersRow is not an event for BA_TruckingDataSet.M8_CustomersDatatable
[Code]
I came across a snippet of C# code which is very useful. I am trying to convert it to VB.NET, but can't seem to.
timer.Tick += delegate { panel.Children.Add(source); timer.Stop(); };
Is it possible to translate this to something similar in VB?
problem with AddHandler with parameters.
i've create a control, here is the code:
Public Class myWorker
Public Event Complete()
[code].....
When using a ReadWriteLockSlim for multi-threading support, do I need to EnterWriteLock when using AddHandler? [code]
View 1 RepliesI am trying to connect to an attached mdf (SQL Express local) file, where i want to delete all the stored procedures. When i execute my code at executenonquery command i get the error "There is already an open DataReader associated with this Command which must be closed first.".
[Code]...
in vb6 I wrote a program that had a context menu attached to the systray icon, and using an array I was able to create a group of menu items that if you clicked on one of them it became checked but unchecked the rest of the items, I can't seem to find a way of doing this in vb2008,
View 3 RepliesI'm really new to any form of VB programming and I am trying to create a form which will allow me to take information from an attached database holding information on:
class names (i.e. Year6 Dragons)
Students names (i.e. Sarah Jessica Parker)
I want the design to look very similar to the form used in MS Access for the query wizard, which will allow me to choose a class and then specific students.
