Visual Basic

AliAmjad8-Nov-07 2:43

8-Nov-07 2:43

There is no Multi Line Comment support in VB.NET as yet but hopefully in the future you have to select all the code which you want to comment and then use the Comment button in IDE.

Hope it helps !

AliAmjad(MCP)

First make it Run THEN make it Run Fast.

half-life8-Nov-07 3:14

half-life

8-Nov-07 3:14

THANKS

Have Fun
Never forget it

Luc Pattyn8-Nov-07 3:00

Luc Pattyn

8-Nov-07 3:00

Hi, IMO the best way to learn a new language is to buy a book and work your way through it.
That way you will get all the essentials in a short time, both explained and illustrated.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

this months tips:
- use PRE tags to preserve formatting when showing multi-line code snippets
- before you ask a question here, search CodeProject, then Google

Re: question with chklistbox

MikeMarq8-Nov-07 4:37

MikeMarq

8-Nov-07 4:37

No but there is an easy way to comment and uncomment blocks of code. Just highlight the code and press the toolbar item that does that and it will put ' infront of all the lines of code you highlighted. Same goes if you want to uncomment a block of code.

EPSON Printer

briogene8-Nov-07 2:25

briogene

8-Nov-07 2:25

Hey guys could someone out there help me , i want to print some receipts from an Epson TMU printer could some one help with code for printing this or some advice.

question with chklistbox

eyes20078-Nov-07 1:48

eyes2007

8-Nov-07 1:48

hi to all

is it possible with check list box that selection mode property set to multi extended

if is possible than please tell me how can i do that and if not possible then

should i go for a custom control in that it is possible.

any help is highly appreciated

thanks

help everyone

AliAmjad8-Nov-07 1:54

Re: question with chklistbox

8-Nov-07 1:54

eyes2007 wrote:
is it possible with check list box that selection mode property set to multi extended

No it's Not ! only ListBox Control Support this Property !

AliAmjad(MCP)

First make it Run THEN make it Run Fast.

eyes20078-Nov-07 2:16

eyes2007

8-Nov-07 2:16

thanks for your fast reply.

i am thinking about to make one, should i go for it.
one more question

why should microsoft has to make two different controls like checklistbox and listbox.

why not they provide the checkbox fecility in the same control by making it a property.
i am thinking about the reason behind it but i can't find the answer if some body knows then please tell me.

again thanks

help everyone

Re: question with chklistbox

AliAmjad8-Nov-07 2:39

Passing pointer to structure from VB.net to VC++

8-Nov-07 2:39

eyes2007 wrote:
i am thinking about to make one, should i go for it.

Entirely depends on your requirements did you search Code Project first for this and then Google because it gonna take allot of your time.

eyes2007 wrote:
why should microsoft has to make two different controls like checklistbox and listbox.

Because both of these controls are for different requirements and one has advantage over the other e.g. you can't bind data to the CheckedListBox control for this you have to use either ComboBox or Listbox and also not support for Multi Selection whereas in ListBox Control you can't display a Checkbox besides every item.

Hope it helps !

AliAmjad(MCP)

First make it Run THEN make it Run Fast.

naaas8-Nov-07 1:19

naaas

8-Nov-07 1:19

Hello

I'm trying to communicate with an application written in C++ that receives windows messages. The problem is that i need to pass a pointer to a structure from VB.

In C++ the code to send a message looks like this (works fine)

BOOL bRC = false;
COPYDATASTRUCT cpd;
cpd.dwData = MESSAGE_1;
cpd.cbData = 0;
cpd.lpData = 0;

bRC = ::SendMessage(m_hServer, WM_COPYDATA, (WPARAM)NULL, (LPARAM)&cpd);

I've tried using marshaling this way in VB but doesn't work:

Dim bo As Boolean
Dim data As CopyData

data.dwData = MESSAGE_1
data.cbData = IntPtr.Zero
data.lpData = IntPtr.Zero

Dim ptr As IntPtr
ptr = Marshal.AllocHGlobal(Marshal.SizeOf(data))
Marshal.StructureToPtr(data, ptr, False)

bo= SendMessage(server, WM_COPYDATA, IntPtr.Zero, ptr)

Any ideas? thank you.

How to make the system sleep for a while.

SekharOne7-Nov-07 22:29

SekharOne

7-Nov-07 22:29

How can I make the system sleep for a while so that in the meanwhile my files get populated with some data and after that I can access the file for processing. Is there any way in vb.net or I have to call some API functions ?

Thanks in Advance.

Sekhar

Re: How to make the system sleep for a while.

RichardBerry7-Nov-07 23:55

RichardBerry

7-Nov-07 23:55

System.Threading.Thread.Sleep(1000) '1000 Milli Second delay

Or you can use a different thread to do the population of the files.

Private Sub PopulateFiles<br />
  .....<br />
End Sub

Use the lines below in one of your Procedures, which then calls the PopulateFiles procedure on a new thread.

Dim thPopulateFiles As New System.Threading.Thread(AddressOf PopulateFiles)<br />
thPopulateFiles.Start()<br />

It can be tricky if you access the file before the new thread has finished executing - maybe look at Thread.Join as well.

Tree view population

briogene7-Nov-07 22:25

briogene

7-Nov-07 22:25

hi;

how do i populate the tree view from data from the database;

VB6 + sqlserver2000

thanks

briogene

Re: Tree view population

John_Adams9-Nov-07 23:51

John_Adams

9-Nov-07 23:51

Hi,

Please visit the following link to know how you can populate the TreeView from a MS-SQLSERVER database.

http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q320755

I hope this helps.

Regards,
John Adams
ComponentOne LLC

Network/Internet - status - bytes/sent/received

FeRtoll7-Nov-07 22:04

FeRtoll

7-Nov-07 22:04

I need status of network received/send bytes over lan and over internet!!!

Can anybody help me?

So i have 4 labels:

1.) in first one i want to see how much bytes i sent trough lan "to other pc-s in my network".

2.) in this one i want to see how much bytes i have received trough lan "from other pc-s in my network".

3.) Here i need to see how much bytes i sent to the internet "trough wan or i dont know how to get this".

4.) and here how much i received from internet...

If anybody can help me please...

Thanks!

FeRtoll Software.net
------------
E-Mail me
WebPage

RS232 - "Stealth Mode"

RichardBerry7-Nov-07 21:39

RichardBerry

7-Nov-07 21:39

Hi I have a small app using the IO.Ports.SerialPort class. (VS2005 - Visual Basic)

Can anybody point me in the right direction to make this app MONITOR data transfer on a particular port in both directions, but not interfere it.

So basically if I have an application communicating with an external device on a particular serial port, I want to be able to log the data that the app sends to the device and the data the device sends back to the pc, but it must not interfere?

Invalid StructureMemberDecl

MumbleB7-Nov-07 21:19

MumbleB

7-Nov-07 21:19

Hi Guys. I am trying to convert the following bit of code to C# which I got from a mate of mines but I keep getting an error message. Can anybody please tell me what is wrong with it? I keep getting the Error "Invalid StructureMemberDecl.

Public CNCatalogue as String = "jhbmsql16"
Public CNDataSource As String = "TakeOn"

Public CN As New SqlConnection("Initial Catalog=" & CNCatalogue & ";Data Source=" &  CNDataSource & ";Integrated Security=SSPI")

Re: Invalid StructureMemberDecl

AliAmjad7-Nov-07 22:08

Re: Invalid StructureMemberDecl

7-Nov-07 22:08

This code does not contain any error there must be something else in your code that raised this error.

AliAmjad(MCP)

First make it Run THEN make it Run Fast.

MumbleB8-Nov-07 1:29

MumbleB

8-Nov-07 1:29

Thanks mate for looking at this. I'll check the rest of my code.

Why Error

MrFulvio7-Nov-07 20:20

MrFulvio

7-Nov-07 20:20

Good Moring

Why riceve an error for this code

Structure Item
dim A as string
end Structure

Structure Item1
dim a() as Item
end Structure

dim Value as Item
dim Value1 as item1

value1.a(1)="item" - <- Reference to an object not set to an instance of the object.

Tks in adavance

Fulvio

AliAmjad7-Nov-07 21:57

7-Nov-07 21:57

Why you are assigning a 'String' when it takes a Structure in this case an Item and create an object of the structure before assigning it a value.

Hope it helps !

AliAmjad(MCP)

First make it Run THEN make it Run Fast.

MrFulvio7-Nov-07 22:37

MrFulvio

7-Nov-07 22:37

can write an example ?

AliAmjad8-Nov-07 1:43

8-Nov-07 1:43

This code may help u to understand the concept:

Structure Item
    Dim A As String
End Structure

Structure Item1
    Dim a As Item
End Structure

Dim Value As Item
Dim Value1 As Item1

Sub STExample()

    Value.A = "Some String"
    Value1.a = New Item()
    Value1.a = Value

End Sub

AliAmjad(MCP)

First make it Run THEN make it Run Fast.