Visual Basic

12-Jun-04 7:10

You might want to ask a more specific question. Just asking if some has read a book will result in a Yes or No answer, if any...

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: VB.NET

Mekong River12-Jun-04 22:47

Mekong River

12-Jun-04 22:47

Hi, I used to read Microsoft Visual Basic .Net 2003 Step by Step (Michael Halvorson, Published by Microsoft Press). It is a good book to read and start from the beginner. Another books is Visual Basic Programming (author by Harold Davis, published by Sybex). This one has a good written style, It also teach you step by step to learn VB.Net

Roath Kanel
APO-CEDC
Save Children Norway-Cambodia Office

Database

Jan Konijnenberg12-Jun-04 0:03

Jan Konijnenberg

12-Jun-04 0:03

Hi
I wondered if there is anybody out there who could help me.

I'm new to VB.NET and I want to read through a MS Access Database Table and manipulate (Add, Edit, Delete) the table in code myself.

Please help

Cry | :((

Re: Database

Hesham Amin12-Jun-04 0:46

Hesham Amin

12-Jun-04 0:46

check these articles[^] as a start.

bitwise rotation

Ercoolz11-Jun-04 22:07

Ercoolz

11-Jun-04 22:07

Hii..I need some help here guys.Thanks before 4 ur answer.
Q:How can I make bitwise rotation with any input value and any input rotation in VB6?
Now Waiting...............

Re: bitwise rotation

Dave Kreskowiak12-Jun-04 1:58

12-Jun-04 1:58

To move the data X number of bits to the left, you would use:

Result = Value * ( 2 ^ X )

To move the data X number of the to the right, you would use:

Resutt = Value / ( 2 ^ X )

VB6 and VS.NET 2002 don't have native bit-shift operators. VB.NET 2003 does...

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: bitwise rotation

Ercoolz13-Jun-04 3:00

Ercoolz

13-Jun-04 3:00

Unfortunately dave..I can't cheese yet.Code which u gave to me is to make bitwise shift, not for bitwise rotation.So..I'm back to you,how can it be done?Maybe,I give a simple example what I mean about bitwise rotation.
Ex:
value : 1110001111000111
rotate : 5 bits
result : 0111100011111100
But anyway thanks again, u want reply my question.It means to me..

Re: bitwise rotation

Dave Kreskowiak13-Jun-04 8:24

AddHandler / RemoveHandler

13-Jun-04 8:24

After a little research and testing, there is also a problem I forgot about. In VB6, the shifting doesn't work in all cases because VB works only with signed numbers. If you use the techniques on &hFFFFFFFF (-1 decimal) and shfit the number ANY number of bits to the left, you'll get &hffffffff (-1 decimal).

To get true bits shift support, you'll need a C++ .DLL to take care of the bit shifting for you. This is because C++ can work on the numbers as unsigned, doing the shifting correctly, then sending them back to VB6. Even then, you won't be able to do reliable calculations with those numbers because the sign bit will not be valid. You may think you have a positive value after a bit shift operation when you don't.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

PaleyX11-Jun-04 16:11

PaleyX

11-Jun-04 16:11

Is it perfectly safe to keep adding and removing handlers using AddHandler and RemoveHandler?

Rugby League: The Greatest Game Of All.

Re: AddHandler / RemoveHandler

Dave Kreskowiak12-Jun-04 1:56

Office Addin Listen All event

12-Jun-04 1:56

Sure. Just make sure your not removing the handlers while they are still being used and remember to remove the handlers you don't need anymore.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

skoizumi2911011-Jun-04 12:43

skoizumi29110

11-Jun-04 12:43

I am developing COm based office addin
and try to hook the event which listening
all the event happend in office Save
new ....

Anyone has clue?

Shin

Deployment Rearranges Controls on Form

Brent Lamborn11-Jun-04 7:37

Brent Lamborn

11-Jun-04 7:37

Ive deployed a VB.APP using these[^] guidelines. The deployed version seems to have rearranged my controls on my form. Ive tried setting diffrent form attributes but nothing seems to work. The form looks fine in when I run the app from Visual Studio. See an image of the two forms here[^]. Also Id like to deploy the proper icon like the one shown on the left side. Thanks for any help.

I can post code if necessary.

"Half this game is ninety percent mental."
- Yogi Berra

Visual Basic homework

KristineB11-Jun-04 6:55

11-Jun-04 6:55

HI I am new to the VB.net world, I am actually a student having a tough time with an assignment. The assignment wants me to make a software company. They sell three packages. Package A 99.00, Package B 199.00, PackageC 299.00. For buying a certain amount of quantity you get a discount.

Quantity discount
10 through 19 20%
20 through 49 30%
50 through 99 40%
100 or more 50%

With this I am suppose to have two messageboxes, one showing the amount of orders and one showing the grand total. With the grand total one I am supose to have a check box. Im really quite confused and ANY help that ANY one can give me I would be great appreciative! I have been working non stop on this and I dont' think I have made much progress.

Thanks!

Colin Angus Mackay11-Jun-04 7:41

Colin Angus Mackay

11-Jun-04 7:41

KristineB wrote:
With this I am suppose to have two messageboxes, one showing the amount of orders and one showing the grand total.

Are you sure you're suppose to have message boxes? Or do you mean dialogs? or Text boxes on a dialog?

KristineB wrote:
Im really quite confused and ANY help that ANY one can give me I would be great appreciative!

That is a bit vague. Can you narrow it down to something more specific?

KristineB wrote:
I have been working non stop on this and I dont' think I have made much progress.

So, what have to managed to get working so far, and what is still broken? Why not take the broken bits and work on them one at a time (if you are still stuck then you can ask here again with specific details on the bit you are stuck on)

If you take the problem and work on it bit by bit then it does make thinking about it a lot easier and less daunting. An easy thing to do is to make a list of everything still to do/get working and go through it.

I hope this helps, and just let us know if there is any particular part you need help on.

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Can't manage to P/Invoke that Win32 API in .NET? Why not do interop the wiki way!

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KristineB11-Jun-04 7:44

11-Jun-04 7:44

I can't seem to get the if/then/elseif to work on the %'s. the messagebox when I try to put in the controlchars.CrLf will not work. Pretty much everything. I try to write a line for the multiplication of the %'s and I am getting no where. Does that help?

Colin Angus Mackay11-Jun-04 8:06

Colin Angus Mackay

11-Jun-04 8:06

The if/then/else part first:

' At some point in the code quantity is defined some how
' For example:
        Dim quantity As Integer
        quantity = 20

' The code will have to work out the discount.
' For example:
        Dim discount As Double
        discount = 0.0
        If quantity >= 10 And quantity <= 19 Then
            discount = 0.2
        ElseIf quantity >= 20 And quantity <= 49 Then
            discount = 0.3
        ElseIf quantity >= 50 And quantity <= 99 Then
            discount = 0.4
        ElseIf quantity >= 100 Then
            discount = 0.5
        End If

Now, as for the multi line message box, you need to make sure the newline is defined properly. For example:

MessageBox.Show("My Multiline" + Environment.NewLine + "message!")

Environment.Newline is will always return the correct newline for the system. (Although I've not used it, I thing that if you were using the Mono framework [the open source version of the Class Runtime Library] on Linux it would just have the linefeed character, whereas on Windows it will have the linefeed and carriage return)

Does this help?

KristineB11-Jun-04 8:07

11-Jun-04 8:07

Yes thank you so much! I appreciate it!

KristineB11-Jun-04 9:12

11-Jun-04 9:12

One more question:

When I go to my design and want to write the code for btncalculate, so that it will pull a messagebox with the totals, what code would I write for it to take Packagea (99.00) and the txtpackagea (insert amount here) to realize the % and come up with the correct total? Does that make sense?

Excel/VBA - Hard question

Colin Angus Mackay11-Jun-04 9:47

Colin Angus Mackay

11-Jun-04 9:47

KristineB wrote:
Does that make sense?

Maybe... I'll explain my assumptions because I am not 100% sure what you mean.

* You have a variable called Packagea which has a value of 99.00.

* You have a variable called txtpackagea which is a reference to the TextBox control

* You need to convert the text in the TextBox to a number in order to perform the calculation.

Try this:

Dim quantity As Integer

Try
    quantity = Convert.ToInt32(txtpackagea.Text)
Catch ex As Exception
    MessageBox.Show("The quantity entered for Package A is not a number")
End Try

Does this help?

Jon G11-Jun-04 1:31

Jon G

11-Jun-04 1:31

Anyone here know if it would be possible to override the mouse click event when clicking on a POINT on a graph?

Basically, what I'm trying to do is, if the user clicks on a POINT on a graph, it will prompt him to enter comments on that particular point.

At the moment, if you double click on the graph, it will automatically open the edit chart dialog.

Anyways, if anyone can share some insight on the problem at hand, let me know.

Thanks,
Jon

Re: Excel/VBA - Hard question

Dave Kreskowiak14-Jun-04 3:00