Visual Basic

Re: mp3 recording / LAME encoder

13-Apr-08 21:37

There's no mp3 encoding built into .NET, so you need an extra component to do the encoding for you. Then, if you want to do it yourself, you will need to use DirectX to do it.

Christian Graus

Please read this if you don't understand the answer I've given you

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

Fred Worms15-Apr-08 7:59

Fred Worms

15-Apr-08 7:59

Thank you Christian for your quick reply. Vielen Dank.

Extra control: I looked at three of these. Example programs do not work, or work on Vista, crash with XP. I lost lots of time in the past using controls of small firms.
I hoped to get a more detailed reaction from someone experienced in this respect, e.g. from Qualtar, who published an article on a somewhat similar LAME encoder subject.

I would like to address Qualtar directly, however, I have the impression that this is not possible(I know very little about forums).

I do not like at all your attempt to be funny at the end of your reply.

Kind regards,

Fred

Fred Worms

How fill records to listview with datareader

Coban_13-Apr-08 21:17

Coban_

13-Apr-08 21:17

Hi all, i want to ask a question about datareader. I have a user control its inherits ListView. And I have a table has 500000 records. For performance fill the listview, when form_load i fill first 20 records. When user click scroll down add to 21 record. Every click add to next record. How can i do this with DataReader. And how can i hand event to scroll click. Please help me. My code below;

User Control ;
Dim x As Integer
Dim dbConn As New SqlConnection("server=" + _ServerName + ";database=" + _DatabaseName + ";uid=" + _UserName + ";pwd=" + _PassWord)
Dim strQuery As String = "SELECT * FROM ListeKontrol"
dbConn.Open()
Dim myCommand As New SqlCommand(strQuery, dbConn)
Dim myReader As SqlDataReader = myCommand.ExecuteReader()
While myReader.Read And x < 20
MyBase.Items.Add("")
MyBase.Items(x).SubItems(0).Text = x.ToString
MyBase.Items(x).SubItems.Add("ListeAck")
MyBase.Items(x).SubItems.Add("Alan1")
MyBase.Items(x).SubItems.Add("Alan2")
x = x + 1
End While

S.A.A

Christian Graus13-Apr-08 21:48

13-Apr-08 21:48

cmpe orko wrote:
"SELECT * FROM ListeKontrol"

This is the wrong way to go about it. If you have 500 thousand records, you need to think about it a little more than this. Your best bet is to write a stored proc that takes a page number and a number of records per page, and request the page you need every time. A dataset that you bind to makes more sense than using a loop and a datareader.

Coban_13-Apr-08 22:12

Coban_

13-Apr-08 22:12

Thanks my friend, but i don't understand clearly. How get page number or some range of records with stored proc. Can I get some row index with sql.

S.A.A

Christian Graus13-Apr-08 22:20

13-Apr-08 22:20

Yes, you can get a row index, if you have an identity column and you don't delete records, you can use that.

http://blogs.x2line.com/al/archive/2004/05/29/325.aspx[^] was my first google hit

Coban_14-Apr-08 0:10

Coban_

14-Apr-08 0:10

Thank you my friend.

S.A.A

Bactracking

BoyPols13-Apr-08 20:55

BoyPols

13-Apr-08 20:55

I have created a form and i have added a label,the label is supposed to be template in which 99 new labels would be generated,at the moment i can only generate one label clone of the label template.here is the code

Private Sub frmBackTrack_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
obj = New Labels2
'instantiate new checkbox class
Dim MyLabel As New Labels
'assigning the properties of the new object
With MyLabel
.Text = ("Label2")
.Left = Label1.Left
.Top = Label1.Top + Label1.Height
.Size = Label1.Size
'.BackColor = Color.Azure
End With
'adding checkbox control to the form
Me.FlowLayoutPanel1.Controls.Add(MyLabel)

End Sub
please assist me to generate the other labels

Re: Bactracking

Christian Graus13-Apr-08 20:59

regarding storing the key windows registry in vb.net

13-Apr-08 20:59

I'm not sure what you need here, except to suggest you look into for loops. You really should buy a beginners book and work through it, the concetp of a loop is pretty starting level.

vijaylumar13-Apr-08 19:52

vijaylumar

13-Apr-08 19:52

hai friends

to store a key in windows rwgistry

that too in "HKEY_CURRENT_USER"

i used the following code.....

Application.UserAppDataRegistry.CreateSubKey("Software\Microsoft\Keyname")

oke its working..

but the key is storing along my application details..

say my application name:appxyz
company name: compxyz
Version :1.0.0.0
first it is creating a key with company name
and within company name... the sub key is ...version

then with in version .... it is creating .... software\microsoft\keyname..

i dont want to happen this....
by any one can find out the key...
bcoz they know my company name...
they will search for it in registry
and looks for the data...

my requirement is like this ...
i want to create a key(s) in "Hkey_Current_User"
but in differnet places...

plz help me...

thanks in advance
bye

vijay
devulapally_vijay@yahoo.co.in

Re: regarding storing the key windows registry in vb.net

Christian Graus13-Apr-08 20:56

Re: regarding storing the key windows registry in vb.net

13-Apr-08 20:56

What you want to do is nasty, you should put the keys where people can find them, but I get why you'd want to hide stuff, for security, etc. Get rid of the Application. stuff and use the raw APIs that allow you to access the registry where-ever you like. There's tons of articles here and on google.

Dave Kreskowiak14-Apr-08 3:11

Dave Kreskowiak

14-Apr-08 3:11

Use the Registry classes instead of the Application shortcuts. This will give you much greater control over what you need to do.

Documentation on the Registry class[^] on MSDN.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

JanusGridEx problem

en.Mahdi13-Apr-08 19:11

en.Mahdi

13-Apr-08 19:11

I have a table with long columns header .
I must show columns in 2 or more lines .
please help me how I can set the janus GridEx column Header wordwrap true .
en.Mahdi

Re: JanusGridEx problem

Christian Graus13-Apr-08 19:27

13-Apr-08 19:27

Did it occur to you to ask here[^] ?

Re: JanusGridEx problem

Christian Graus14-Apr-08 10:49

array style codeprovider in .net

14-Apr-08 10:49

it is better that you answer me .
i know you can not answer to me .
jam kon kazo koozato .

is how you replied to me via email. I am replying here so you don't get my email address.

No, I don't know. Nor does anyone else. We don't use this grid. That's why I suggested you ask people who DO use it.

cstrader23213-Apr-08 16:14

13-Apr-08 16:14

I'd like to allow my users to write code statements in array format, for instance

c = a + b

where a and b are really a() and b() arrays.

Any ideas how I could do this? I've checked math code parsers, but none of them seem to do arrays.

Thanks!

Christian Graus13-Apr-08 16:45

13-Apr-08 16:45

In what context, are you writing a library ? What are the rules for adding two arrays ?

cstrader23214-Apr-08 1:42

14-Apr-08 1:42

Well the math is array math, as in c++.

cstrader23214-Apr-08 2:03

14-Apr-08 2:03

OK, I clearly need to be more specific.

I'd really like to create an intellisense-capable editor that would allow my users to write and see their errors in vb.net code. However, for a few functions, I'd like add c++ type capabilities, such as:

c = a + b

where c a and b are actually arrays.

other relevant array operators are < > = - / *

Maybe the first question should be how to implement the intellisense editor.

Thanks again.

Luc Pattyn14-Apr-08 2:13

Luc Pattyn

14-Apr-08 2:13

Hi,

you want to define your own type (class or struct) and use operator overloading.
Look for some articles here at CodeProject on such things as complex numbers, or big integers;
that will show you the principles.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

This month's tips:
- before you ask a question here, search CodeProject, then Google;
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get;
- use PRE tags to preserve formatting when showing multi-line code snippets.

cstrader23214-Apr-08 2:53

14-Apr-08 2:53

Thanks Luc. I didn't know about operator overloading -- that's exactly what I need.

What about applying vb.net intellisense in a user editor?

Any ideas on that?!