ByVal Sender As System.Object - ByVal E As System.EventArgs
Jan 25, 2011
Just as a secondary question, usually I reduce: -(ByVal sender As System.Object, ByVal e As System.EventArgs) to just () for most occurrences of auto-generated subroutines. Is there any harm in doing this? I cant see any reduction in performance but do get more readability.
I'm making this program that opens the same forder in every pc but it identifies the pc name to do it.
Public Class cv7import Private Sub cv7import_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code]...
but I want it to do it with the pc's name and I'm not sure how the environment.systemdirectory works, or even if it's the right one to use. Is it the right thing to use or is there a better solution.
I have a little VB 2005 Express app that acts as a gui for an application that normally runs in a cli (cmd-like) window, as follows: Code:Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim Server_Exe As String = "C:Documents and SettingsColinDesktopin 7302OpenSim.Grid.UserServer.exe"
[Code]...
1. The cmd window normally shows various status messages in colour, whereas the RichTextBox shows all messages in Black (on a white background). How can I get the RichTextBox to show the messages in the same colours that the cmd window displays?
2. As the RichTextBox fills with data, filling the box, and beyond, and the scrollbar starts to shrink, I notice that the data at the top of the RichTextBox stays there, and you would have to scroll down to see the last status message, whereas I would like it to do the reverse, i.e the last status message is at the bottom of the visible RichTextBox, and if I wanted to see the earlier messages I would have to scroll up. How can this be achieved?
Private Sub FontToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles FontToolStripMenuItem.Click Or Button1.Click
it just gives me zero for my anwser.Can someone please make corrections?Public Class Form1 Private Sub xExitButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles xExitButton.Click
Why isn't this seemingly simple piece of code working?
Code: Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load For Each sp As String In My.Computer.Ports.SerialPortNames ListBox1.Items.Add(sp) Next End Sub
(me = an absolute beginner in WPF / VB2010) how to get the type of sender in (ByVal sender As Object)? Purpose: when two different Objects call the same subroutine, find out which one actually called it.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles Button1.Click sayHello(sender) End Sub
How do I execute "Button1_Click" when click "Button2" like "Button1.Click(######)"? When I try to write Button1.Click() then that keep asking me "sender As System.Object,e As System.EventArgs". What value that I have to have "sender As System.Object, e As System.EventArgs"
In VB.Net, I have an object named WorkflowButtonEventArgs that inherits from System.EventArgs.The WorkflowButtonEventArgs class contains two ByRef Properties. These are objects that are in memory, and I do not want them duplicated or copied in any way.
Can I pass the WorkflowButtonEventArgs object ByVal in VB.Net and have it still preserve the two ByRef definitions in WorkflowButtonEventArgs?Specifically, if I pass it ByVal:
Dim e As New WorkflowButtonEventArgs e has some ByRef properties RaiseEvent SomeEventName(e) ' e is passed ByVal Will the ByRef Properties/Members in e (WorkflowButtonEventArgs class) not be copied or duplicated in memory?
Long-story-short: Can I pass e ByVal, or do I need to pass it ByRef since it contains ByRef Properties?
I have a text-boxes that use both the validating event as well as the lostfocus event.I have pinpointed the exception in the post title to the validating events.[code]Maybe I am unaware that CancelEventArgs are not suppose to be used in the validating event? [code]
I am getting following error whenever I want to use IIf function inside entity framework query.
LINQ to Entities does not recognize the method 'System.Object IIf(Boolean, System.Object, System.Object)' method, and this method cannot be translated into a store expression.
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.
I would like an overview of System.EventArgs. I have an understanding of System.Object where I can pass data between subroutines and functions using Public Classes
I am researching ways to use vbTab and Tab stops to create a report in VB 10. I found some code that demostates the tab methods. When I plug the code into Visual Studio 10, I get 'graphics' not part of System.eventsargs, referring to the g.graphics.drawstring command. I have tried several different imports statements with no success.
Im using Visual Studio 2003.NET. When im trying to make the webbrowser1 work with the progress bar, it dosen't work. I have looked on youtube videos.[url]...
Private Sub Form5_paint(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Paint Dim redbrush As New Drawing.SolidBrush(Color.Red)
[Code].....
but got error "Graphics is not a member of System.eventArgs"
Dim instance As Graphics Dim blackPen As New Pen(Color.Black, 3) Dim point1 As New Point(100, 100) Dim point2 As New Point(500, 100) e.Graphics.DrawLine(blackPen, point1, point2)
Error1'Graphics' is not a member of 'System.EventArgs'.
As I understand it, C# passes parameters into methods by reference. In vb.net, you can specify this with ByVal and ByRef. The default is ByVal.
Is this for compatibility with vb6, or is it just random? Also, how can I specify what to use in C#? I kind of like the idea of passing parameters by value.