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I have a problem, I guess many experts out there could help me.
I am doing matrix analysis with Matlab. Could someone tell me how to interface VB with Matlab> What I want is how to display the matrix result in VB form? Then draw the graph of the matrix in VB form.
I hope someone will help. Thanks 
dont forget this guy
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As far as I know, Matlab provide a control for VB or other develop tools.
find this in Matlab->help.
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I buy a active X dll for my application,
As my application is a COM Addin application,
which use a msi installer to deploy the project.
How can I include the dll in my application setup?
just like include a VB.NET class librabry dll.
Thank you.
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in which path do you want to insall the dll file?
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i need to print invoice using dot matrix printer using
continuous form paper.
is the hole in the paper that make easier to ripped
by hand came from the paper it self or do i have to
coded something in my program ? i'm using vb.net
please i'm desperately need to know. thank you
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klakero wrote: is the hole in the paper that make easier to ripped by hand came from the paper it self or do i have to coded something in my program
Have you bothered to LOOK at the paper? 
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
-- modified at 22:01 Sunday 12th March, 2006
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And I thought it was bad enough to try and encourage people to read the documentation.
ColinMackay.net
Scottish Developers are looking for speakers for user group sessions over the next few months. Do you want to know more?
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That's the problem!! They can't read the docs unless they loko at the paper their printed on! 
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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hey, im just start programming in less than a year
so forgive me if it sound stupid
so i guess that means it comes with the paper
yeah, thanx anyway.
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Hello Everyone,
I created a custom control which consists of a label and a listbox. The control has a public property called 'Items' which allows users to add list items to the control's listbox during design time. (much like the Items property of the vb listbox). I used ListItemsCollectionEditor to display the ListItems Editor window.
I added some list items using the ListItems Editor window but the listbox did not display the newly added items at all.
A code snippet is given below:
Private listitems as new ListItemCollection
<editorattribute(gettype(system.web.ui.design.webcontrols.listitemscollectioneditor), _
gettype(uitypeeditor))=""> _ 'displays the ListItemEditor window
Public ReadOnly Property Items() As ListItemCollection
Get
Return listitems
End Get
End Property
How do I enable the persistance of the list items collection so that the listbox will display the items?
Advice would be appreciated
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I could be wrong here, but if all you're doing is re-exposing the ListView's Items collection, I think you're missing a couple of things. First, you have to tell it which editor to use to edit a ListViewItemsCollection. You can "borrow" Microsoft's for this (I'm assuming .NET Framework 2.0). You also have to remember to call your InitializeComponent method to create any constituent controls of your UserControl BEFORE you can create your own ListViewItemsCollection or use the one in the ListView that you're using.
Imports System.ComponentModel
Imports System.Drawing
Imports System.Drawing.Design
Imports System.Windows.Forms
Imports System.Windows.Forms.Design
Public Class MyUserControl
<DesignerSerializationVisibility(DesignerSerializationVisibility.Content), _
Editor("System.Windows.Forms.Design.ListViewItemCollectionEditor, System.Design,Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", _
GetType(UITypeEditor))> _
Public ReadOnly Property Items() As ListView.ListViewItemCollection
Get
' I'm assuming that you have a ListView control on your UserControl surface called "m_ListView"!!!
Return m_ListView.Items
End Get
End Property
' This is VERY important! Without this next line, the ListView will not initialize
' itself and create it's internal ListViewItemsCollection!!
Public Sub New()
InitializeComponent()
End Sub
End Class
Want to know where I got the Editor line from?? Checkout Lutz Roeder's .NET Reflector[^] and dig into the ListView class' code.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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Hi all, I have a dictionary table contains 2 columns. One is the key column, and the others
One is data column. I made the key column records using CODE rules. For example I used letter ‘A’ as short for a Class Name, then number the CODE from 1 to 100. Similarly, A Full CODE look like ‘A00001B00002C00003’, and every CODE have a DATA.
Now, I need query value from this table. And I need using a value by many times.
The direct way to query is using ‘SELECT DATACOLUMN FROM TESTTABLE WHERE CODE = ‘A00001B00001C00001’’.
Sometimes, I must do this SQL QUERY many times for a value.
How do I change the way to access database or other way can improve efficiency to do this?
Any assistance would be really appreciated.
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One of the best ways is to create an index on your key column. This will cause the database to perform an index seek instead of a table scan each time you query the table. This is much more efficient.
...Steve
1. quod erat demonstrandum
2. "Give a man a fish and you've fed him for a day. Teach him how to fish and you've fed him for life." I read that somewhere once
(Translation: I'll show you the way, but not write the code for you.)
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Steve Pullan wrote: One of the best ways is to create an index on your key column.
Thanks Steve.
I created an index on the key column.
Do you know other way to improve efficiency?
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WuJunyin wrote: Do you know other way to improve efficiency?
Depends on a whole heap of factors, not the least of which is the size of your database, what database engine you are using, the number of transactions on the database (including your app and others that may be accessing it concurrently) etc...
Simply reducing the number of database queries by caching data already retrieved will improve it too (saves a round trip to the database server).
...Steve
1. quod erat demonstrandum
2. "Give a man a fish and you've fed him for a day. Teach him how to fish and you've fed him for life." I read that somewhere once
(Translation: I'll show you the way, but not write the code for you.)
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Thanks for your reply.
I using MS Access as my database engine. And my app is a simple app. there is alway one transaction when app running.
--
Steve Pullan wrote: Simply reducing the number of database queries by caching data already retrieved will improve it too (saves a round trip to the database server).
If vb6.0 has a control or class like .NET component 'DATASET', can it improve efficiency?
If answer was yes, how do I written a class or control like 'Dataset'.
Any assistance would be really appreciated.
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I developed a prototype GUI with Visual Basic .NET 2005. The problem that I am having is with window redrawing itself. I have two forms (two windows) and when one form shows the second form { .Update() and .Show() } and hides itself { .Hide() }, the second form redraws itself twice - one before .Hide() and the other one after it. I need to prevent this redrawing, because it is useless and looks ugly. Do you have any suggestions on how to do that?
Thank you
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Why are you calling Update on this second form, then Show?? You're telling the form to redraw itself twice, then it might do it again after you call Hide on the first form. Don't call Update when you don't need it.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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The thing is that this is supposed to be a "fancy interface". When a user does some manipulations and clicks a button, one window gradually disappears while the other gradually appears. The implementation based on changing Opacity property. I have just tried without update and show, and I am getting the same effect - right after the opacity reaches 100% for one and 0% for another form, the visible form starts redrawing itself completely. Looks like something tells the window to redraw itself completely with all its children. And this something seems to reside outside my code...
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Now I know what you're talking about. No, there is nothing you can do about it. This is something that happens in Windows Forms. I haven't been able to find anything documenting what's causing it.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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i m amking my project for IDE so i want the button code for
Find and replace
form1 contain Richtextbox
form2 contain find and replace form
from form2 search text in form1
i want the code please help me
zabsmarty
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Would you care to read the documentation on the RTB's Find[^] method before asking us to write a bunch of code for you? (Which we won't do, BTW.)
We're here to help you with YOUR code, not write it for you. If you've got specific questions about problems you're having, great! You've come to the right place! We'll point you in the right direction so you can learn something while writing your code. If you have other people write it for you, you won't learn anything...
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
-- modified at 10:32 Sunday 12th March, 2006
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Hi.
Is there any method to enumerate, start, kill processes in vb6? I searched a lot but didn't find anything useful.
Thanks
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There's nothing native to VB6 that will do this. You can do it using WMI though, and its Win32_Process[^] class.
You can find out more about using WMI in your own apps here[^]. VB6 would be using just about the same techniques as VBScript.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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