Hi, I'm having a very very frustrating experience with the .NET. I've a simple crawler console application. The main objective of the crawler is to read a list of URLs and make HTTP calls to a web server and save the html files locally. I had setup perfmon to monitor the memory usage of th...more >>

Hi all, From the performance perspective, which of the following is better? please give brief explaination. Thanks Simon ******************************************************** Q1 if(string.indexOf(1, ".aspx") != -1)... verse if(string.indexOf(1, ".aspx") > -1)... *...more >>

I have a C# application that uses a couple of retro VB controls: Microsoft.VisualBasic.Compatibility.VB6.DriveListBox Microsoft.VisualBasic.Compatibility.VB6.DirListBox Which requires that I have the following references: Microsoft.VisualBasic Microsoft.VisualBasic.Compatibility These refe...more >>

The nprof 0.5 alpha release is now available. nprof is designed to be not only a fully-fledged profiler for .NET applications, but also a complete API that can be used to build other profiler front-ends, as well as extend the default GUI with new visualization tools. nprof is Open Source. ...more >>

Is the second version shown below better? I couldn't locate enough info about [MethodImpl(MethodImplOptions.Synchronized)] in order to tell. 1.. My commonly used singleton pattern implementation looks like this (it was inspired by Eric Gunnerson's book): private static volatile MyClass si...more >>

Does VB/Visual studio.Net have some way to let me know how much memory my objects are taking up? I cant seem to figure out how to get the Locals/Watch/or Memory windows to show this information (Maybe I am doing it wrong?). It looks like I have some kind of memory leak in my Visual Basic prog...more >>

Hi, We proudly announce the new web based monitoring tools, writtnen on DotNet and ASP.NET. SysPerf Framework was engineered using Microsoft .NET technology and the latest web services technology to provide true enterprise-wide performance monitoring in a single Web browser. Read more ab...more >>

We have built a suite of windows services that rely on Performance Counter data. When our services are set to "AutoStart" and we reboot the machine, the services are timing out and do not start. Our software must support both Windows 2000 and XP. Here are more more details: Service 1: "Rock_Fr...more >>

Hi. I'm working on private game project. The game is shooting game, so I need very high speed with seamless frames. I satisfied with speed of Managed DX, but I gor some strange problem about loading dlls. When I debugging, framework sends me serveral dlls loading messages. I don't know ab...more >>

Hi Our application has the following architecture : Rich Client (C#), Business-Logic/Processing tier (C#, MC++) hosted in a Windows service (stateful) and Data tier (custom 'DB' accessed via DCOM/COM written in ATL/C++) (again stateful Windows Service). Client machines are P3 1Ghz (512MB) or ...more >>

Hi, Can anyone tell me how can I get the time intervals between function call in a user control (say third party user control, for which I do not have the source code.) I need to get the time each function took for execution. Eg: I want to get the time used only in drawing the physical ap...more >>

I am in a process of evaluating different third party components in terms of GDI performance. What would be the best way to measure the time it takes to draw the control. The point here is that I do not have the source code for the components and I want to get the performance data for certain spe...more >>

I have an aplication (obviously :)) I look at the Task Manager, memory usage column, and notice the following: First time I start the application, I have around 55.000- 60.000 K. After I minimise the application and restore, the Memory usage drop to 16.000K and remain around that value.. Shou...more >>

I am rephrasing a question, I asked a while back here. I have a Control like this: public class MyControl : Control { protected AccessibleObject CreateAccessibleInstance(){..} ... } This causes the Accessibility.dll to get loaded as soon as the above type is created (note that t...more >>

It's strange - Microsoft newer use winforms controls in their applications... Performance of winforms is incredible bad! I'm testing all grids written in pure NET and all of them are incredible slow in very simple operations like scrolling with mouse or keys navigation. Can anyone show me e...more >>

We have to use ngen to improve startup time for various applications . These apps use an external lib for logging which is installed in the GAC and is also ngend. The logging level is set in an ini-file. This scenario with the ngend application files (exe) works for almost all applications, but f...more >>

Hi all, When I run installutil against an assembly containing a class which inherits from System.Diagnostics.PerformanceCounterInstaller, I get the following errors: Installing assembly 'c:\...\searchtimertest\gui\bin\searchtimer.dll'. Affected parameters are: assemblypath = c:\...\sear...more >>

Is there any performance difference between using a switch statement and the logically equivalent if-else structure? Thanks, Mountain ...more >>

I've been having this problem for a few weeks. PLEASE read this post before responding with some simple reason that has nothing to do with my problem. If you need more information, please request it as I'll be checking this post very often. PROBLEM: Occaisionally, our web server begins runni...more >>

I am working on a hight speed UI in managed directX and C#. The way the UI works is that as resizes and button state changes cuase renders to happend. The UI is resolutoin dependent and all alpha blended. If during my render I need to draw text that get's to be a memroy intensive thing. The te...more >>

Hi, I would like to JIT a type during application load. This is necessary because JITing on demand slows down tremendously certain user operations at the later stage. And PreJiting via ngen is not an option here (think internet deployment, etc). I have observed that calling a method explici...more >>

Hi Guys, We have overridden CreateAccessibleObject in our Control types and the presence of this override causes the Accessibility.dll to be loaded when the type gets instantiated. This is a huge issue in our deployment scenario, where we want to minimize the load time for our apps. And we ...more >>

I have a collection of objects that is being returned from a remoting call. As the collection gets larger, the serialization/deserialization time seems to get exponentially longer. (100 objects takes a few moments, 500 takes a few minutes, 1000 takes forever) I'm implemented a FlyWeight pa...more >>

Hi. I develop a program using C# and I want to measure the time it takes for a function to be excecuted. Can anyone help me on this? Thanks...more >>

Hi, i have an application that creates objects on the fly based off of database records. I am running into a problem where after a certain number of records, I get the following error: [OleDbException (0x80004005): Unspecified error] System.Data.OleDb.OleDbConnection.ProcessResults(Int3...more >>

All the developers on my project have a habit of setting objects to null before a method ends. Is this really necessary? I don't believe there is any benefit what so ever. The typical reason given is to free up memory. Surely if the procedure is about to end then they will be marked as null s...more >>

Question on .Net fundamentals, re: JITing of the Framework Calling Process.GetProcesses() on a HyperThreading (possibly true multiproc) computer running Windows 2000 fails with "Couldn't get process information from remote machine ---> System.ArgumentOutOfRangeException: Ticks must be between ...more >>

I'd like to perform some math calculations, however I only require single precision results. The System.Math class provides only double precision Sin\Cos (etc) methods so I'm forced to cast the result. Looking at the assembly generated by the JIT it seems that these are intrinsic methods, as the...more >>

I was recently set to release an app that used very common single instance code and hit the oddest issue. After many hours of full build tests I believe that it is duplicatable. Environment: ..Net 1.1 (v1.1.4322) Windows 2000Pro HyperThreading machine Issue: Install 2kPro on the HT...more >>

Hi, I am trying to read a huge text file (2GB) using StreamReader. I do this: Read a line (readline()) I process the line a bit (split it with delimeter and change fields a bit) execute (using transaction) a insert query to Ms Sql server Commit a transaction for 1000 insert queries. ...more >>

we have a severe memory problem on our webservers, the sitiuation is that the asp.net worker process just keeps eating all the memory and it eventually crashes when it reaches the 60% ( or whatever ) limit , it crashes, i have tried to observe it several time, but never saw it loosing any me...more >>

Does anybody know what the maximum number for threads per AppDomain is? Surely there must be some kind of maximum. I am not talking about thread pooling. Just using threads with threadstart. Also the maximum stack size, max memory, etc. Where or how do we configure these maximums? How do w...more >>

I have about 500 objects that each have 1 or more images. The images are icons stored as manifest resources. These images will need to be displayed repeatedly and quickly. Right now I have a property that provides the images on demand. It 'caches' the images in a local variable, so after the f...more >>

We host bunch of singleton remoting objects in different app domains in a window service. The service runs with admin user identity. The client (window application) calls a method (say A) on the singleton remote object to supply an id. The method on remote object does some heavy processing based...more >>

Hii Can anybody tell me how good is developing realtime applications in .NET Is writing managed code for realtime performance critical applications advisable? Thanks in advance, Joe...more >>

I'm not quite sure which groups to post this to, so short of a massive crosspost, I decided on these two. I am running into troubles with resource usage of our app on Win2k and above systems. In several places, I have seen it said that the WinNT model only limits resources to available memory....more >>

Java has been around long enough to collect a large set of antipatterns to collect knowledge about things that don't work/scale well. Does anyone have good sources for the equivalent .NET/C# antipatterns? What are the gotchas in building complex/large C# apps? TIA...more >>

Does anyone know if an ASP.Net application can reside on the same server as an ASP application without causing any conflict? They are both SQL server based. Thanks...more >>