VB.NET and OCR - Visual Basic Discussion Boards

Christian Graus12-Mar-08 20:29

12-Mar-08 20:29

Vuyiswa wrote:
So i would like to how can i take one Layer and take it to another Server and and another Layer(DLL) to another server, so that when the number of users Grow the perfomance will still be good, and how will the other layer know the location of the other layer if they are separated, is that achieved through code and how.

You would do this by writing code to communicate between layers over the network. Odds are, the speed of network traffic will negate any benefits you may hope for.

Christian Graus - Microsoft MVP - C++

"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 )

Re: Question about N-Tier Applications

Vimalsoft(Pty) Ltd12-Mar-08 22:51

Vimalsoft(Pty) Ltd

12-Mar-08 22:51

Let me Google and i will come up with Questions after a research

thanks

Vuyiswa Maseko,

Sorrow is Better than Laughter, it may Sadden your Face, but It sharpens your Understanding

VB.NET/SQL7/2000/2005
http://vuyiswamb.007ihost.com
http://Ecadre.007ihost.com
vuyiswam@tshwane.gov.za

coloring the XP taskbar

H. Porter12-Mar-08 19:13

H. Porter

12-Mar-08 19:13

Hi: Does anyone know, or have code, to color the Windows XP taskbar Confused | :confused:

. I know some of the Windows Blinds software does this; but, then both I and the end user would need the software installed.

I sometimes make themes and would like to coordinate the taskbar color with the wallpaper Wink | ;)

.

And a small program just to do this (and have it reversable by running a second time would be what I want).

If I knew where this item was in Windows I have someone who might be able to help.

thanks, Harry Dead | X|

Re: coloring the XP taskbar

Thomas Stockwell25-Mar-08 8:12

Thomas Stockwell

25-Mar-08 8:12

An article that I wrote explains the closest way that I have been able to see to do this without expensive software. the article can be found here:Add Transparent Menus and Titlebar Buttons to your Applications[^]

Regards,
Thomas Stockwell

Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.

Visit my homepage Oracle Studios[^]

read MAC code

H. Porter12-Mar-08 19:09

H. Porter

12-Mar-08 19:09

Hi: Does anyone know how to read the MAC code internally from a program Confused | :confused:

. I want to use this to develop passwords so some software will only install on one machine.

any help appreciated, Swamp Daddy

Re: read MAC code

Christian Graus12-Mar-08 20:48

Christian Graus

12-Mar-08 20:48

You do this with WMI. The processor Id is a better candidate IMO.

Re: read MAC code

Rajesh Anuhya13-Mar-08 0:43

Rajesh Anuhya

13-Mar-08 0:43

'' Read Mac Address

Public Function GetMACAddress() As String
Try
Dim searcher As New ManagementObjectSearcher("select * from Win32_NetworkAdapter")
Dim share As ManagementObject
Dim sbMAC As New Text.StringBuilder
Dim myMACADD As String = ""
For Each share In searcher.Get()
Debug.WriteLine("value: " + share.Item("ProductName").ToString)
If InStr(share.Item("ProductName").ToString, "Packet Scheduler Miniport") Then
sbMAC.Append(share.Item("MACAddress"))
Debug.WriteLine(" " + sbMAC.ToString.Replace(":", ""))
myMACADD = myMACADD & sbMAC.ToString.Replace(":", "")
Exit For
End If
Next
Return myMACADD
Catch ex As Exception
Throw ex
End Try
End Function

use namespace

Imports System.Management

Thanks

Rajesh B --> A Poor Workman Blames His Tools <--

VB.NET and OCR

Daniel Lopez12-Mar-08 14:08

Daniel Lopez

12-Mar-08 14:08

Hi all,

I wanted to write an application, that could scan a receipt and read the items bought. Each item is in a list and can be edited before saved. The line on the receipt right before what items that were bought will have "Items Bought". I heard that I may have to use OCR to recognize the items. Can anyone help? If I need to buy a third party OCR, then please recommend one not so expensive with a great success rate.

Re: VB.NET and OCR

Christian Graus12-Mar-08 14:58

Christian Graus

12-Mar-08 14:58

You 'may' have to use OCR ? There's really no other way to do it. I'd recommend the Atalasoft libraries, they have OCR, and all the libraries I have used of theirs have been great.

getting filesize from server

XtremeMaC198412-Mar-08 14:01

XtremeMaC1984

12-Mar-08 14:01

Hi there
i'm making a very simple downloader in vb.net to download images from a certain server.
just by entering the url of the html file, download location of the images are obtained through some regEx. (and some user inputs)

there are couple of image sizes named accordingly. some images don't have bigger sizes though.
if small image = image001s.jpg
if large image = image001l.jpg
if gigantic image = image001g.jpg
and so on.

the problem is I don't want to have to download the html file to see if a link to bigger size exists.
I just want to check if it exists on the server and if possible i'd like to get the size of the file.
so i just would like my program to return and error or do nothing if bigger sized image doesn't exists.

for example:
I open up example page: http://www.mywebsite.com/2008/03/12/article555.htm
I can see that there are 10 image thumbnails in the htm page named:

http://images.mywebsite.com/2008/03/12/555/image001s.jpg
http://images.mywebsite.com/2008/03/12/555/image001l.jpg

http://images.mywebsite.com/2008/03/12/555/image002s.jpg

http://images.mywebsite.com/2008/03/12/555/image003s.jpg
http://images.mywebsite.com/2008/03/12/555/image003l.jpg
http://images.mywebsite.com/2008/03/12/555/image003g.jpg

so image 1 only has small & large, image 2 only small, and image 3 all sizes.

I want to download the biggest images..
any help?
tia.

Combining Text in a comboBox with different colours

TheFury12-Mar-08 12:24

TheFury

12-Mar-08 12:24

Hello, I am new to VB.Net and require some help?
I am trying to write a program which reads various text files (depending on if a tick box is checked)and combines them in a ComboBox. However I would also like to be able to set the colour from each of the text files? How do I do this?
This is the code I am using to read and combine the text in a comboBox

Dim QNLDef As New System.IO.StreamReader("C:\QNL\QNLDef.txt")
Do Until QNLDef.EndOfStream
Me.ComboBox1.Items.Add(QNLDef.ReadLine)
Loop
QNLDef.Close()

Dim BradyList As New System.IO.StreamReader("C:\QNL\QNLBrady.txt")
Do Until BradyList.EndOfStream
Me.ComboBox1.Items.Add(BradyList.ReadLine)
Loop
BradyList.Close()

Any help would be appreciated.
Thanks, James.

Re: Combining Text in a comboBox with different colours

Christian Graus12-Mar-08 13:39

Christian Graus

12-Mar-08 13:39

You need to owner draw your combo box to change text color line by line

Re: Combining Text in a comboBox with different colours

TheFury13-Mar-08 2:13

TheFury

13-Mar-08 2:13

OK, thanks for the prod in the right direction. I'll continue to search...

aspnet2312-Mar-08 11:45

aspnet23

12-Mar-08 11:45

I need help creating a login form using VB.NET that will access our Unix system and issue some type of command or run a script once logged in to the system. Can someone help me on this? Thanks in advance. Confused | :confused:

Image Resizing - Webserver Effect

cbjroms12-Mar-08 9:40

cbjroms

12-Mar-08 9:40

I have an application (VB.Net2) which takes an image (JPEG) file and resizes it.

I have tested this application by putting it into a local version of my website (which also contains local copy of my image library) hosted on my PC. The images shown on the web pages are crisp and clear.

But when I put this same version of the website (including image library) onto my remote webserver, the images shown on the served web pages are markedly pixallated (even in areas that are normally flat colour). I have downloaed the images from the image library to check them on my PC and they are fine.

Why should the website produce crsip/clear images when hosted locally yet grainy/pixallated images when hosted on a remote web server?

Thanks in anticipation.

Chris

DLL Problems

parth.p12-Mar-08 8:27

parth.p

12-Mar-08 8:27

Hi, I am just trying to create a DLL in VB.NET and use it in my console application, I know its not worth doing that, but I did.

Here's the code for Dll:

Imports System<br />
Imports System.Threading<br />
Imports Microsoft.VisualBasic<br />
Imports System.Runtime.InteropServices<br />
<classinterface(classinterfacetype.autodual)> _<br />
Public Class Class1<br />
    Public Shared Function Main(ByVal iBigNum As Integer) As Integer<br />
        Dim iRndNum As Random<br />
<br />
        Main = iRndNum.Next()<br />
<br />
        Return Main<br />
    End Function<br />
End Class</classinterface(classinterfacetype.autodual)>

And here's the code for console application:

Module Module1<br />
    Public Declare Unicode Function iRandom Lib "C:\Users\Parth\Documents\Visual Studio 2005\Projects\vbRndDll\vbRndDll\bin\Debug\vbRndDll.dll" Alias "Main" (ByVal iBugNum As Integer) As Integer()<br />
    Sub Main()<br />
        Dim i As Integer<br />
        For i = 0 To 10<br />
            Console.WriteLine(iRandom(3000).ToString)<br />
        Next<br />
    End Sub<br />
<br />
End Module<br />

When I run this Vista gives me error message saying program crashed. But the DOS window is still open and this is the message I get in DOS

Unhandled Exception: System.Runtime.InteropServices.MarshalDirectiveException: Cannot marshal 'retur
n value': Invalid managed/unmanaged type combination.
   at Console_db_VB.Module1.iRandom(Int32 iBugNum)
   at Console_db_VB.Module1.Main() in C:\Users\Parth\Documents\Visual Studio 2005\Projects\Console_d
b_VB\Console_db_VB\Module1.vb:line 7
Press any key to continue . . .

Can anyone tell me what I'm doing wrong??! I'm thinking of using VB.NET in C++ 6.0 and I need .NET code for some of the stuff I want to do. Confused | :confused:

Thanks in Advance. Smile | :)

- Stop thinking in terms of limitations and start thinking in terms of possibilities -

Re: DLL Problems

Nilesh Hapse12-Mar-08 21:17

Nilesh Hapse

12-Mar-08 21:17

I think the problem is with:

Main = iRndNum.Next()<br />
Return Main

Instead you can directly use:

Return iRndNum.Next()

"Legacy code" often differs from its suggested alternative by actually working and scaling.

—Bjarne Stroustrup

How to protect from past onto textbox?

phowarso12-Mar-08 6:32

phowarso

12-Mar-08 6:32

I don't want to permit by using " Ctrl + V " keys onto textbox.
I wanna protect the textbox by using Past function.
How to protect above metter?
Please give me some suggesion... Confused | :confused:

Re: How to protect from past onto textbox?

Xmen Real 12-Mar-08 6:54

Xmen Real

12-Mar-08 6:54

use KeyPress event, and if the pressed button is Control then set Handled = true

hope this will help

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%^]*IRXD#@GKCQ`R\^SF_WcHbORY87??6?N8?BcRAV\Z^&SU~%CSWQ@#2
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Rs0~53%eYrd8mt^7Z6]iTF+(EWfJ9zaK-i?TV.C\y<p?jxsg-b$f4ia>
--------------------------------------------------------
128 bit encrypted signature, crack if you can

DataGridView , Expression and Calculation Problem [modified]

fearless stallion12-Mar-08 5:02

fearless stallion

12-Mar-08 5:02

Hi,

I have a Datatable which has a couple of Columns with "Expression" property set.
I have set that Datatable as a DataSource to a DataGridview. Now when I am trying to set a value into one of the column for all the Rows in a loop, it is not calulating the values as set in "Expression" on a single row.

if there are 10 rows then for 9 rows it shows correct value but 1 row it doesn't calulate at all

I checked the loop index but everything is fine.

I am also doing some custom calculations on the "CellValueChangedEvent". Is this because of the event handled separately ??

Can anyone help me on this ? please

thanks in advance

KSS

modified on Wednesday, March 12, 2008 11:10 AM

Time stamp insert into database

Cory Kimble12-Mar-08 4:24

Cory Kimble

12-Mar-08 4:24

I don't know why I am having so much trouble with this. It is only a simple insert into a database. Can someone help me with this. I am so frustrated and the answer is probably staring me in the face.

I want to get the current date in my VB.net desktop program. I then want to insert the date along with an ID and the location. I have tried doing this a number of different ways. But it is not formatting the date correct in the database.

Breakdown:
Code:

Dim shipTo As String = "Test" Dim dateInv As Date Dim ID As String = "11111" Dim command As New OleDbCommand dateInv = Today command.CommandText = "Insert INTO [Physical_Inventory] VALUES(" + shipTo + ", " + ID + "," + dateInv.toShortDate() + ")" command.Connection = connection command.Parameters.Add("ShipTo", OleDbType.VarChar, 20, shipTo) command.Parameters.Add("ID", OleDbType.VarChar, 20, ID) command.Parameters.Add("DateInv", OleDbType.DBDate, 20, dateInv.toShortDate) command.Parameters("ShipTo").Value = shipTo command.Parameters("ID").Value = ID command.Parameters("DateInv").Value = dateInv connection.Open() command.ExecuteNonQuery() connection.Close()

I am trying to update a Access Database and I get 12/30/1899 in the date field.

Can someone help me.

Re: Time stamp insert into database

Parwej Ahamad12-Mar-08 6:25

Parwej Ahamad

12-Mar-08 6:25

Always remember while you are doing perform any operation on Date field with access database always use DateValue() function.

Either Insertion or Updation or Fetching data.

If still your problem persist then let me know.

Parwej Ahamad
g.parwez@gmail.com

Re: Time stamp insert into database [modified]

Cory Kimble12-Mar-08 9:21

Cory Kimble

12-Mar-08 9:21

Do I put the DateValue() in Access? I already have the date in my code. I am trying to send it to Access. How can I do that?

Never mind, found the problem. I needed single quotes on each end of my date variable in my sql statement. Thank you for your help.

modified on Wednesday, March 12, 2008 4:50 PM

Re: Time stamp insert into database

Parwej Ahamad12-Mar-08 17:28

Parwej Ahamad

12-Mar-08 17:28

Put the DateValue() function in your SQL Statement.

This might be create a proble while fetching the records in search criteria on Date field.

Parwej Ahamad
g.parwez@gmail.com

Re: Time stamp insert into database

Cory Kimble24-Mar-08 4:39

Cory Kimble

24-Mar-08 4:39

My issue was I didn't have single quotes in the SQL statement. Thank you.

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