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The only way to improve upon this is to not have 700 rows in your DataSet. You could requery the database for the smaller rowset, but that involves bugging the SQL Server again and transferring that data over the network again.
Dave Kreskowiak
Microsoft MVP - Visual Basic
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Hi,
I'm trying to use the paint method to draw a table on a panel in a windows form. For some reason, the paint method is being called over and over again (I don't even know how many times!) when the form is opened. Does anybody know why this is happening? I'm fairly new to all this, so any insight is much appreciated.
Thanks!
RC
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reshsilk wrote: the paint method is being called over and over again
This will happen if you put a breakpoint in the paint method, which causes focus to transfer back to Visual Studio, thereby invalidating the panel. The process will repeat ad infinitum. To verify the paint method is being called more times than it should, replace the breakpoint with a Debug.Trace() call and inspect the contents of the Output window.
Another reason for the paint method being called repeatedly may be programmer error - eg: invalidating the panel (in code) from within the paint method.
Hope this helps!
/ravi
My new year's resolution: 2048 x 1536
Home | Music | Articles | Freeware | Trips
ravib(at)ravib(dot)com
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hi ravi,
i did have a breakpoint in the paint method, which i removed. but it still appears to be firing multiple times. i am trying to redraw a panel in a windows form when a particular button is clicked. here is part of the code...
private void srchPlatesBtn_Click(object sender, EventArgs e)<br />
{<br />
getPlates();<br />
split.Panel2.Invalidate();<br />
}<br />
<br />
private void split_Panel2_Paint(object sender, PaintEventArgs e)<br />
{<br />
Graphics g = e.Graphics;<br />
drawPlateResults(g);<br />
}<br />
<br />
private void drawPlateResults(Graphics g)<br />
{<br />
}
Do you know of any other way to force the panel to redraw?
Thanks for all your help,
RC
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reshsilk wrote: Do you know of any other way to force the panel to redraw?
You are principally doing this right. Put somethin like a Console.WriteLine statement into your drawing code to really check if your Panel gets painted multiple times (which I don`t think seeing your code).
Like already stated the Panel might not only redraw when you call Invalidate but for example also whenever you move a window on top of your app.
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Please don't cross post.
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b { font-weight: normal; }
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Hi all,
I am facing a problem after migrating my web application from framework 1.1 to 2.0(my apps is running on win server 2003). I randomly receive error when i try to connect to oracle db: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Anyone knows why that error appears? It works fine when i was using 1.1. Thanks in advance 
elcheah
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Hello guys (and girls)
I have got this mysterious .NET error:
"The description for Event ID ( 0 ) in Source ( .NET Runtime ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. You may be able to use the /AUXSOURCE= flag to retrieve this description; see Help and Support for details. The following information is part of the event: .NET Runtime version 1.1.4322.2300- Setup Error: Failed to load resources from resource file.
Please check your Setup."
According to the event log the source of error is ".NET Runtime".
I have been Googleing for quite some time now, but without any luck.
A brief description of the application:
It is a winservice managing new orders from customers. This is an automatic task. Whenever a customer places a new order, the winservice will notice this by looking in the database. The service processes the order, and notify the customer by mail.
The service consists of a System.Timers.Timer which every 10th second checks the database, to see if any new orders are present. If so, the service will perform it's task, otherwise wait another 10th seconds.
But every once in a while, the above mysterious error occurs followed by a "unexpected exit" of the service process.
This is what I've found out so far:
- According to the results from Google, this is usually caused by an infinite loop. Although this seems to be a good explanation, I haven't been able to locate any inifinte loops in the code.
- The error often occures in association with IIS. Though customers are using a webservice to place their order, there is nothing indicating an IIS error.
- The service's memory use is not devastatingly high. And usually stays on an average level.
- There is no reference to an exception what so ever.
Until now debugging has been a wild goose chase. So before I'll go out and cry in the woods, I thought I would ask if any of you guys have experienced this strange behaviour.
System:
Windows Server 2003 with SP1
Components used:
- MapInfo MapXtreme 6.2
- Oracle Data Provider for .NET 9
Webservice uses:
- IIS and Oracle Data Provider for .NET
Thanks for any help you can provide!
modified on Monday, March 10, 2008 4:57 AM
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Sounds like a localization issue, whats the culture settings of the server? Do they match your build box?
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Hai,
i have created a shared assembly in .net and install into global assembly cache but my problem is that how we can use the shared assembly in our application. please tell me in details...
Deepak Garg
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http://support.microsoft.com/default.aspx?scid=kb;en-us;306149
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Hello everyone,
I was wondering if anyone out there might know how to compare an entire listview item and return the index if one of the items matches. i have tried:
<br />
Public Function FindItem(ByVal item As ListViewItem) As Integer<br />
Dim itm As ListViewItem<br />
For Each itm In Me.Items<br />
If itm.Equals(item) Then<br />
Return itm.Index<br />
Exit Function<br />
End If<br />
Next<br />
Return -1<br />
End Function<br />
<br />
AND <br />
<br />
Public Function FindItem(ByVal item As ListViewItem) As Integer<br />
Dim itm As ListViewItem<br />
For Each itm In Me.Items<br />
If itm.Text = item.text Then<br />
Return itm.Index<br />
Exit Function<br />
End If<br />
Next<br />
Return -1<br />
End Function<br />
The first one does not seem to work at all, and the second one works, but only checks the text value of the first column and does not seem to compare other column values of the listviewitem. Thank you
eatwork
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eatwork wrote: the second one works, but only checks the text value of the first column and does not seem to compare other column values of the listviewitem
That's because you did not write the code in such a way that it compares the values of the sub-items.  You'll need to iterate the SubItems collection of each ListViewItem, and compare their Text values.
Josh
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Hi Josh,
Thanks for the reply, I was hoping there would be a better way to go about that, but I guess I will have to go through the subitems. Thanks
eatwork
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Hi friends,
I want to track the message sent over the LAN and i want to update those message details to database, I am using RealPOpup(RealPopup homepage:
www.realpopup.it) for internal messaging.
i want to capture all the messages sent through this application in one centralized place.
this application it self having a option to store the all messages in Notepad format, but it is very difficult to annualize the details in text file, so it should be updated in to the database, is there any solution for my issue
Thanks
Rajasekaran.S
Software Engineed
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Hi all,
Could anyone help me with Remoting materials or ebooks which would help me learn about Remoting..
Do not wait to strike till the iron is hot; but make it hot by striking.
-- modified at 7:38 Thursday 15th June, 2006
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No i have not seen it..thanx for the information
Do not wait to strike till the iron is hot; but make it hot by striking.
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Hi friends.
I have a little question and I dont know may be it's irrevelant.
I am a beginner , programming a .NET Compact Framework project.My question is about that little ok button on every form.How can I turn it to X mark? an if this is done what happens to DialogResult property of page.Currently it always return DialogResult.OK and I really need .Cancel or .Abort.
Kind Regards
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In the click event for the button, set the desired DialogResult value and close the form.
---
b { font-weight: normal; }
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This is driving me nuts! 
I am writing my first C++ .NET application and all I want to do is load a bitmap resource. Normally I would do something like ::LoadImage(IDB_BITMAP), but it says it is not in the global namespace. I want to load it as an Image type, but Image only has method for loading from a file or via a windows handle.
The code should look something like the following:
pImage->FromResource(IDB_BITMAP);
OR
pImage = resources->GetObject(IDB_BITMAP);
This should be simple! 
Thanks for any help,
INTP
"Program testing can be used to show the presence of bugs, but never to show their absence."Edsger Dijkstra
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Any one knows abt ADXStudio? If so please tell me where to find the
tutorials for that. I am struct in the middle.
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I have a jsp based application through which I am Invoking the .Net based Windows application, Now when this application open the associate .net Asseblies(.dll and .exe) are getting downloaded into the Global Assebly cache....
Now there are two problem
1) Inconsistent problem is whenever I open my Application it throws an error of the "Exception : File or Assembly Name ----,or one of dependencies, was not found.", after trying continously 3-4 time it will open my application,
2)Sometime it will throw this error "System.Security.Permissions.SecurityPermission, mscorlib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 failed"
Now Very Interesting thing is this "whenever I turned off my sophos services (all three), it wont throw any problem and works fine".
Well if anybody can help me it will be great help.
-Later
-Manoj
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Hi!
I have a button_click event with Handles button.Click and when i click on that the event doesn't fire.
Why it´s happens?!
Thank all!
Kosta
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Is the button disabled? Have you inadvertently removed the handler from the button's Click event delegate list?
/ravi
My new year's resolution: 2048 x 1536
Home | Music | Articles | Freeware | Trips
ravib(at)ravib(dot)com
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