Threads Replies Last Post 20 Pages: 1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20   DataGridView: bad performance - searching patterns Hi. Recently I have asked here a question - why performance of DataGridView is SO BAD?! Somebody "eschneider" seems think he is very cool and knowledgable to tell that there is "bad design", "slow XML and DataSets". Of course that is nonsense because in my question about DataGridView performance were clearly described that it was a new application consists only of DataGridView + Bindi... 3 12/24/2008 9:39:01 AM Why performance of DataGridView is SOO BAD? How to fix it? Hi. Please help me. We are thinking should we migrate to .NET or not - making experiments, prototypes, etc. And suddenly I faced very strange problem with DataGridView in .NET - IT IS EXTREMELY SLOW! I loaded only 700 data rows into DataGridView but it terribly slow. :-\ In our applications we expect about 100.000 rows of data in a GUI, so if DataGridView is almost die on 700 data ro... 7 12/22/2008 6:48:01 PM LOH Compaction in 4.0 I would like to know if there are any plans to compact the LOH in .net 4.0? Are there any settings, flags, etc which can be used? Other than pooling and eliminating large object, are there any new strategies in 4.0 to manage LOH fragmentation? Thank you. Kirk... 1 12/15/2008 3:01:00 AM Anit-Patterns I am looking for anit-patterns specifically that are "performance" related. I am aware of a few. But is there an axhaustive list? Has Microsoft published any such specific artciles or guidance for performance anti-patterns? ( I know the Scalenet guide, but anything other than that) Thanks.... 3 12/12/2008 9:29:00 PM WPF performance vs images Hi, how one can decide what is better perfroming solution - rich WPF stuffed with lots of UI elements, gradients, transformations (no 3D stuff just fancy design, see for example Grayson's blog - http://blogs.msdn.com/mgrayson/archive/2007/02/16/creating-a-glass-button-the-complete-tutorial.aspx) or numbers of images to create same effects as above plus text. Say - what would perfo... 1 12/10/2008 12:51:01 AM Not enough memory problems. Hello all, I'm having problems, I can play a pogo game for at least 10-15 minutes. Then it starts to get choppy and slow, and boots me right out saying not enough memory., and to close all open programs and such, and the only thing I have up is the pogo page and playing. Any suggestions pleaseee!! Thank You ... 1 12/6/2008 7:04:00 AM Help: fastish computer very slow after being "fixed" ....computer is being such a hack! It was a fastish computer although slightly outdated: [ windows XP: 2002 960mb ram, celeron 2.67Ghz CPU ] - with no serious viruses that i've found. Atfer taking it in to be "fixed" it functions so so slowly and constantly crashes!, i've been trying to fiddle around with stuff, but although i know abit on computers i don't no exactly what i s... 1 12/4/2008 4:27:00 PM How to find %cpu utilization by a process I am using perfmon. I set up counter under a process (e.g., for sqlserver) prrocess(sqlservr)\% Processor Time". I also selected %Processor time under processor Processor(_Total)\% Processor Time" To my suprise I am finding that %processor time shown for sqlserver is lot higher Processor(_Total)\% Processor Time. Heer are some numbers: 144.0 36.79 What I am missing. Also how com... 1 12/3/2008 9:52:01 PM Which why would provide better performance returning a list of val I have a dictionary with String keys and a business object as the value with the need to return a list of these value items meeting specific criteria. I've read posts relating to using the KeyValuePair from the dictionary in a foreach loop for better performance. My question, in the following, would iterating throught the dictionary as in List<TastableReportScoreItem> items = new... 4 11/28/2008 4:07:37 PM Multi Threading performance I have a .dll that is written in C# that multiple threads a portion of the process. The multi threading piece is uploading images to another server using FTP and doing some remapping in the database. I builds a thread per folder for processing. I cap the number of threads that can run for this area of the code to 10. I have it compiled as a dll into a test application and as a .dll into... 3 11/25/2008 6:33:15 PM Date Type Formatting hi, i am looking for the fastest way to format date type. i have tried (string.format(<date>, "dd/MM/yyyy")), date.tostring(<date>, "dd/MM/yyyy") both works find when data is less than 10000 records. but when the data is more than 200000 records, only this single statement is taking 75% of whole processing. sometime date could be in string type variables, sometime in dire... 2 11/19/2008 12:18:52 PM Restart Problem after automatic update I have auto update running and some updates require you to restart computer. This past week an update was installed while shutting down computer which is normal. When I restarted my computer i get a message in the center of my screen that the computer needs to be restarted, do I want to restart it now, YES NO. I tried the yes and I keep getting the same message. Then I said no and drop ... 1 11/17/2008 6:09:02 PM Running into OutofMemory Exception Issues Hello, Background: I have a service written in .NET that processes a lot of huge datasets (hundreds of thousands of rows) which has been running fine for quite a while now (months and longer) The datasets are growing and starting to cause a few problems with memory management for our application. My first instinct was to check in Task Manager to see what's going on and the numbers the... 3 11/13/2008 9:22:03 PM WindowsXP Defrag.exe return errorlevel with batch file? Hello all, I am tryin to right a bacth file (batch file is the only method that I would prefer to use here, no VB Script) that will defrag a users machine if the drive space is more than 15% free, but return an errolevel if the machine's drive is less than 15% free. I tested this earlier today and was unable to get defrag.exe to return any errorlevel. Is this true, and if so, why? Thank... 1 11/12/2008 1:09:01 AM Terminal Server Sharing Memory I have a very large VB.Net windows application with lots of Modules and libriaries that we deploy on to a Terminal server. The application data tier is a window service on another server and we use remoting to push and pull data. However, when we run the application it take up on average 120Meg of memory. Now normally that is not a big deal, except when I'm on a Terminal server and we... 1 11/9/2008 6:50:05 PM remote perfmon not working I'm trying to add objects on a remote computer in perfmon but no objects exists in the drop down list. When I select the local computer, the counter objects exists. I can do a remote registry to the remote computer adn the remote registry service has been set to manual on the remote computer. Any idea?... 2 11/4/2008 6:49:01 PM WinXP Cold startup My application is a Composite UI Application based winform app. For cold startup it is taking around 50s whereas warm startup takes around 18s. How can I improve the startup perfromance? I have almost all the stuff mentioned in MSDN magazine except NGEN as the app is deployed using ClickOnce.... 1 11/4/2008 12:31:00 PM System Failure after Service Pack reboot I'm running Windows 2000 pro. My question is that everytime that I download a service pack 4 or any other, on the Reboot, my computer fails. Message given is a virsus has invaded my computer or system comflicts. I tried to go to safe mode and still I get this message. The only resource I have found is to Format my hard drive and start all over. I've done the anti-virsus checks before th... 1 10/27/2008 12:51:00 AM win2003 server lockup... Hello All, Running into weird problem, this server locks up around 7:30PM every day, the screen on console is gray, server is pingable and but cannot access the box via console, RDP or connect to admin share. I have to do a hard reboot and everything works ok after reboot. No entry in the event logs regarding the lockup. Hardware: IBM 3650 4 GB memory, 3-300GB raid 5, Page file is set... 1 10/24/2008 11:34:00 PM Server hangs and requires hard reboot Hello All, Running into a weird problem, this server locks up around 7:30PM every day, the screen on console is gray, server is pingable and but cannot access the box via console, RDP or connect to admin share. I have to do a hard reboot and everything works ok after the reboot. No entry in the event logs regarding the lockup. Hardware: IBM 3650 4 GB memory, 3-300GB raid 5, Page file ... 1 10/24/2008 10:19:00 PM Manual stack allocation boosts performance in unsafe code? Hi there, I'm currently doing some research regarding multithreading/multicore support. I used a standard derivation filter on a Bitmap as comparison base. Standard managed code would be to slow for our purposes so implemented an unsafe method: public static unsafe void CalcStdDev(int scan0Src, int scan0Dst, int stride, int hfw, Rectangle region) { int sum, sumq; i... 1 10/20/2008 8:55:01 AM Slow Performance after upgrading to Vista/Access 2007 We have several access databases in formats from 2000 to 2003 and recently upgraded our machines from XP SP2 with Office Pro 2003 to Vista Bus SP1 with Office 2007 Pro Sp1. We are a small office of 9 people with Windows 2008 std on our fileserver and webserver. If we create a blank db on either server it takes forever as well as performance degredation in closing db's, and especially f... 1 10/17/2008 3:04:08 AM dvd opens to audio/video_TS I have a Dell T7400 running Win XP SP3, and I am having a problem opening DVD videos. When I click on the named DVD in My Computer, the DVD opens as Audio_TS and Video_TS. When I click on Video_TS, I get a bunch of VOB files. Also, when I put an empty DVD in the drive, it says "Please insert a disk." My burning software is not recognizing the drives. I have reinstalled the drivers... 1 10/10/2008 5:28:05 AM .net large datatable memory problem hello i have a sql query which return 90 columns and more than 1000000 records. when i try to load this query in datatable it gives outofmemory exception. i have 2 gb ram and core2duo processor. i am using windows xp. (32 bit) when the memory uses more than 2gb(1gb ram + 1gb virtual memory) it gives this exception. we have tried the same thing in vb 6.0 but it runs without any exc... 1 10/10/2008 3:57:58 AM Performance Optimizations Hello everyone, I am writing a utility. Part of its function is to do a block-mode copy of files and generate MD5 / SHA1 hashes on the fly. The functionality is similar to that of the Unix DD / DCFLDD utilities. I am using API calls to get handles to files and FileStreams to perform the copy block by block, hashing on the way. The relevant portion of the code is below. I am usi... 1 10/4/2008 1:03:14 AM 20 Pages: 1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20