Visual Basic

Re: Regads AxMSChart Control

13-Nov-08 4:36

non-bugging Errors wrote:
When the row count is increase high then it is start flickering why it is happening

It happens because you're adding too much information to the chart control, probably more than what's needed to render the graph, and it's spending most of it's time processing and drawing all that data instead of showing the final graph image on the screen.

If you're using VB.NET, I highly suggest using a third party charting library, like ZedGraph[^].

A guide to posting questions on CodeProject[^]

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

sph3rex13-Nov-08 7:19

sph3rex

13-Nov-08 7:19

or if using 3rd party tools is out of hand try ControlStyles.DoubleBuffer property. It should reduce the flickering.

vb.net, crystal reports

Asheeqah12-Nov-08 21:38

Asheeqah

12-Nov-08 21:38

Hi, I am in need of help, I am new to VB and crystal reports. I am having trouble with images on the report. For some reason, the image is blurry. I store the file path in sql2000 db and the image on the dev machine. I am retrieving and saving the image correctly (clear image) onto my local machine (this is a temporary path), but for some reason, the report displays the image blurry. I even tried to insert a fixed picture (which is also clear) but still get the same problem. So I am assuming, there's a problem with the way crystal reports is pulling in the image. Any ideas on how to fix this?
Any help is most appreciated.
Thanks

Re: vb.net, crystal reports

Dave Kreskowiak13-Nov-08 4:31

Which one is good for Performance [modified]

13-Nov-08 4:31

I have no idea how to fix it since I don't use Crystal Reports, but the problem is because the image is being scaled when displayed and CR is doing a bad job of it. Also, is your report picture larger than the size of the original image??

A guide to posting questions on CodeProject[^]

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

indian14312-Nov-08 20:41

12-Nov-08 20:41

Hi,

I have to create a method which will be called for 5400 times roghly which creates a directory and put the data of the user in it.

For performance wise which one is good either
1. MkDir Left$(strPathName, lngPos)
2. Windows API or 3. FSO. which one gives more performance.

Whats the DLL to be included for Windows API?

Thanks,
Aleem Mohammad.

Thanks & Regards,

Md. Abdul Aleem
NIIT technologies

modified on Thursday, November 13, 2008 3:08 AM

Re: Which one is good for Performance [modified]

Rajesh Anuhya12-Nov-08 21:46

Rajesh Anuhya

12-Nov-08 21:46

Windows API Gives u good for Performance Blush | :O

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

indian14312-Nov-08 22:45

12-Nov-08 22:45

Hi,

Can u please tell me which dll file should be enclosed to write this method or in which class "CreateDirectory()" function exists.

If possible some small code snippet.

Thanks,
Aleem Mohammad.

Thanks & Regards,

Md. Abdul Aleem
NIIT technologies

modified on Thursday, November 13, 2008 5:05 AM

Rajesh Anuhya12-Nov-08 23:04

Rajesh Anuhya

12-Nov-08 23:04

just look in

http://www.astercity.net/~azakrze3/html/win32_api_functios.html

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

indian14312-Nov-08 23:50

12-Nov-08 23:50

Hi,

I am able to work it out with FileSystemObject as below but the same code I want to write with Windows API, can anybody please help me in sorting out this problem.

Dim fso As New FileSystemObject
Dim fold1 As Folder
If Not (fso.FolderExists("C:\Fold1")) Then
    fold1 = fso.CreateFolder("C:\Fold1")
End If

Thanks,
Aleem Mohammad.

Thanks & Regards,

Md. Abdul Aleem
NIIT technologies

Sorry friend it is completed but still I tried

sph3rex12-Nov-08 23:59

sph3rex

12-Nov-08 23:59

From the cycle "writing your code in 24 hours from scratches". Seriously take the time and read a few resources yourself rather than asking everything on forums. Not to mention the fact that if you dun really understand what's going on in the copied code you will be unable to debug it if something occurs. Then probably we'll get a new round of "questions".

indian14313-Nov-08 0:26

Re: Sorry friend it is completed but still I tried

13-Nov-08 0:26

Sorry friend it is completed but still I tried as a human I have to ask to others. Sorry if am disturbing u.
And thanks a lot for the help u all have given me.

Thanks a Lot,
Aleem Mohammad.

Thanks & Regards,

Md. Abdul Aleem
NIIT technologies

Dave Kreskowiak13-Nov-08 4:27

13-Nov-08 4:27

You're not disturbing us. We're just pointing out that your overcomplicating your code and your going to run into too many walls that you don't need to run into.

A guide to posting questions on CodeProject[^]

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

DrukenProgrammer13-Nov-08 1:25

DrukenProgrammer

13-Nov-08 1:25

Never Add dlls when you can use it from the namespace

indian14313-Nov-08 2:51

13-Nov-08 2:51

Hi,

yes I havent added any dll but I was confusing. Thanks a lot friend.

Aleem Mohammad

Thanks & Regards,

Md. Abdul Aleem
NIIT technologies

Dave Kreskowiak13-Nov-08 4:26

13-Nov-08 4:26

You don't need the Windows API to do this. It's not going to give you a performance benefit. You're creating a directory on a drive, not calculating PI to 1,000,000 digits.

Keep your code simple and easy to maintain. Use the FileSystemObject to do this. If you do this with the Windows API, you're going to get lost, very, VERY quickly and write about 50 times the code you need to write to do this little job.

A guide to posting questions on CodeProject[^]

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

Cross threading..

Subjugate12-Nov-08 18:23

Subjugate

12-Nov-08 18:23

i have 2 textboxes and each of the textbox is running on different thread. If i wan to display the value which is on the txtbox1 to txtbox2 i have a error can cross-thread operation not valid. What should i do to solve tis problem?

Rajesh Anuhya12-Nov-08 20:07

Rajesh Anuhya

12-Nov-08 20:07

try this

use files to trasfer data between your textboxes.

write content of textbox1 text to a temporary file, read it from second thread and put it in the second textbox2.

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

sph3rex12-Nov-08 22:05

sph3rex

12-Nov-08 22:05

Maybe using a delegate ...

Dave Kreskowiak13-Nov-08 4:07

13-Nov-08 4:07

A guide to posting questions on CodeProject[^]

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

Paul Conrad13-Nov-08 5:54

Paul Conrad

13-Nov-08 5:54

Dave Kreskowiak wrote:

Yep. Almost made me gag on my coffee reading the suggestion of using files Laugh | :laugh:

"The clue train passed his station without stopping." - John Simmons / outlaw programmer

"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

"Not only do you continue to babble nonsense, you can't even correctly remember the nonsense you babbled just minutes ago." - Rob Graham

Dave Kreskowiak13-Nov-08 6:17