473,385 Members | 1,813 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,385 software developers and data experts.

Help!

Ash
Ok, in VB6, if, for instance, I was in "frmAdd", I could use the code:

Dim X as ListItem
X = frmMain.lvwMain.ListItems.Add("blah")

VB .NET doesn't seem to allow me to access controls on the form (that I can see).

Anybody know how I can do this?

Thanks in advance,
Ash
Nov 21 '05 #1
5 1184
What you are trying to do with your code is not legal. You have declared a
variable X of type ListItem. ListItem is a class so X becomes an Object
variable.

You have not instantiated X so therefore you cannot use it yet.

example X = New ListItem

Next, you attempt to do an assignment to X by calling the Add method of the
ListView control's Items collection. This is not correct.

What exactly is it, that you are tyring to accomplish?

If you are trying to add a ListItem to the ListView control then you must do
this;
Dim X As New ListViewItem

X.Text = "blah"

lvwMain.Items.Add(X)
If you want to assign the ListView item to X, that is another story
altogether as you would have to know which item in the ListView you want to
extract.

--
Gerry O'Brien [MVP]
Visual Basic .NET(VB.NET)


"Ash" <as**********@gmail.com> wrote in message
news:f8**************************@posting.google.c om...
Ok, in VB6, if, for instance, I was in "frmAdd", I could use the code:

Dim X as ListItem
X = frmMain.lvwMain.ListItems.Add("blah")

VB .NET doesn't seem to allow me to access controls on the form (that I
can see).

Anybody know how I can do this?

Thanks in advance,
Ash

Nov 21 '05 #2
* as**********@gmail.com (Ash) scripsit:
Ok, in VB6, if, for instance, I was in "frmAdd", I could use the code:

Dim X as ListItem
X = frmMain.lvwMain.ListItems.Add("blah")

VB .NET doesn't seem to allow me to access controls on the form (that I can see).


Let 'MainForm' be the class name of your app's main form. Add the code
below to your project, then go to the project settings and change the
startup object to 'Sub Main':

\\\
Public Module Program
Private m_MainForm As MainForm

Public ReadOnly Property MainForm() As MainForm
Get
Return m_MainForm
End Get
End Property

Public Sub Main()
m_MainForm = New MainForm()
Application.Run(m_MainForm)
End Sub
End Module
///

You can access the main form from everywhere in the app by typing
'Program.MainForm'.

- or -

\\\
Public Class Program
Private Shared m_MainForm As MainForm

Public Shared ReadOnly Property MainForm() As MainForm
Get
Return m_MainForm
End Get
End Property

Public Shared Sub Main()
m_MainForm = New MainForm()
Application.Run(m_MainForm)
End Sub
End Class
///

There are still some alternatives, for example, you can implement the
singleton design pattern for your forms in order to access them by their
class name.

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://dotnet.mvps.org/dotnet/faqs/>
Nov 21 '05 #3
as**********@gmail.com (Ash) wrote in
news:f8**************************@posting.google.c om:

VB .NET doesn't seem to allow me to access controls on the form (that
I can see).


Did you declare the controls at the class level?

--
Lucas Tam (RE********@rogers.com)
Please delete "REMOVE" from the e-mail address when replying.
http://members.ebay.com/aboutme/coolspot18/
Nov 21 '05 #4

"Ash" <as**********@gmail.com> wrote in message
news:f8**************************@posting.google.c om...
Ok, in VB6, if, for instance, I was in "frmAdd", I could use the code:

Dim X as ListItem
X = frmMain.lvwMain.ListItems.Add("blah")

VB .NET doesn't seem to allow me to access controls on the form (that I

can see).

Make sure the Modifiers property for the control is not set to Private or
Protected. This answer assumes that the only issue here is access to the
control on the other form and not some other syntactical error as others
have suggested it may be.
Nov 21 '05 #5
Ahs,

The VB6 form control array disapeared.

However the form has that still now almost the same however the name is a
control collection and it is now for every control.

So when you have a panel you can add that panel as
dim mypanel as new panel
me.controls.add(mypanel)

However you can add to that panel again a panel
dim mypanel1 as new panel
myPanel.controls.add(mypanel1)

They both are invisible however when you color them first you will see them.

I hope this helps?

Cor
Nov 21 '05 #6

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

21
by: Dave | last post by:
After following Microsofts admonition to reformat my system before doing a final compilation of my app I got many warnings/errors upon compiling an rtf file created in word. I used the Help...
9
by: Tom | last post by:
A question for gui application programmers. . . I 've got some GUI programs, written in Python/wxPython, and I've got a help button and a help menu item. Also, I've got a compiled file made with...
6
by: wukexin | last post by:
Help me, good men. I find mang books that introduce bit "mang header files",they talk too bit,in fact it is my too fool, I don't learn it, I have do a test program, but I have no correct doing...
3
by: Colin J. Williams | last post by:
Python advertises some basic service: C:\Python24>python Python 2.4.1 (#65, Mar 30 2005, 09:13:57) on win32 Type "help", "copyright", "credits" or "license" for more information. >>> With...
7
by: Corepaul | last post by:
Missing Help Files When I enter "recordset" as the keyword and search the Visual Basic Help index, I get many topics of interest in the resulting list. But there isn't any information available...
5
by: Steve | last post by:
I have written a help file (chm) for a DLL and referenced it using Help.ShowHelp My expectation is that a developer using my DLL would be able to access this help file during his development time...
8
by: Mark | last post by:
I have loaded Visual Studio .net on my home computer and my laptop, but my home computer has an abbreviated help screen not 2% of the help on my laptop. All the settings look the same on both...
10
by: JonathanOrlev | last post by:
Hello everybody, I wrote this comment in another message of mine, but decided to post it again as a standalone message. I think that Microsoft's Office 2003 help system is horrible, probably...
1
by: trunxnirvana007 | last post by:
'UPGRADE_WARNING: Array has a new behavior. Click for more: 'ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?keyword="9B7D5ADD-D8FE-4819-A36C-6DEDAF088CC7"' 'UPGRADE_WARNING: Couldn't resolve...
0
by: hitencontractor | last post by:
I am working on .NET Version 2003 making an SDI application that calls MS Excel 2003. I added a menu item called "MyApp Help" in the end of the menu bar to show Help-> About. The application...
0
by: taylorcarr | last post by:
A Canon printer is a smart device known for being advanced, efficient, and reliable. It is designed for home, office, and hybrid workspace use and can also be used for a variety of purposes. However,...
0
by: ryjfgjl | last post by:
In our work, we often receive Excel tables with data in the same format. If we want to analyze these data, it can be difficult to analyze them because the data is spread across multiple Excel files...
0
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
0
BarryA
by: BarryA | last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
1
by: nemocccc | last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
1
by: Sonnysonu | last post by:
This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...
0
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
0
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...
0
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers,...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.