I have to write an app that can be offered as both a client-server solution as well as a standard solution. For the server-client solution here are multiple users all of them working with the same data. The solution might be deployed on an intranet or internet. The client has some complex func...more >>

Hello, friends, I installed .net Enterprise Architect version 2003 (Fraimework 1.1, version 1.1.4322) in my machine, and tried to run sample C# source code that has statement: using System.Web.Mail However, when I compiled it, I got erros, saying "Mail" does not exist in the class or na...more >>

We have a .NET class library with a built-in license-control system that checks for the presence of a digitally signed license file AT RUNTIME. This is a fairly standard technique that distinguishes between "trial" licenses (which only allows only limited functionality) and "full" licenses. W...more >>

Using: ms framework 1.1 How to mark a selected region in a picturebox control? Thanks IA JH ...more >>

http://www.ebook5.com The Best free eBooks community! All these books posted by Internet Users! Borland C++ Builder: The Complete Reference C++: The Complete Reference Core Java 2, Volume 1: Fundamentals (5th Edition) Core Java 2, Volume II: Advanced Features (5th Edition) Core J2EE Patte...more >>

Hi, I'm developing a program who needs that user communicate via TCP over the net. One will be the listener and the other one the client, as usual. I've implemented the code as two classes deriving from a common interface. Everything seems to work OK until I use the Close() method. I've tried...more >>

I am new to using both dotnet and regex. I have done the basic reading to the point I thought I know how to use regex to extract date string. But I ran into problems. what is the best regex expression to look for month names or date string for that matter? from my testing, I could u...more >>

Hi, I was under the impression that the finally block always got executed no matter what. Well I ran into a situtation that I can duplicate from a console app as well as a web application. For the console app if the try block is executing/processing its clode and the console app is clos...more >>

I was wondering what is the difference between - putting resources in Formxxx.resx (form level) ? (my prefered) and - putting resources in Resources.resx (app level) ? Thanks Nicolas Guinet ...more >>

Hi all, Our software need to work with large bitmaps (approx. 3 to 6 megabytes). Our previous versions were all build with VB6 and used the PictureBox control to load, zoom and pan the bitmap. It all works without a problem, and it is pretty fast. We are rebuilding our software in .Net and exp...more >>

Hi, I will be writting a web application that will accept certificates from clients. What I really need is to get the private key from the client and decrypt some data and display it. Clients that do not have the private key will not encrypted data. Is this possible? Can someone point me to t...more >>

I am debugging managed and unmanaged code in C++ DLL When ever i start debugging debugger hangs for 30secs or so at the last line below at the last line and then continues as normal. How can i overcome this problem? 'Tester.exe': Loaded 'C:\WINDOWS\system32\comctl32.dll', No symbols loaded....more >>

We have a .NET project that makes pretty regular use of a COM object that appears to be misbehaving. Am I correct in understanding that setting a COM object to nothing should act the same way that it would have in VB6? By this I mean it is actually destroyed and not marked for GC. We have an obj...more >>

Guys, Does anyone know much about the IExpando interface? I have a business object I've created and I'd like to add support for methods / attributes at runtime so that scripting clients ( e.g. ASP / VBScript / Java script ) can call the .NET object through a RCW and invoke methods which ...more >>

Hello, I seem to be running into a problem with regards to data size etc: Explanation: A person opens a .aspx page and posts and writes an article of a few thousand words. When they click Insert Record they get this message: System.Data.SqlClient.SqlException: String or binary data would ...more >>

I am using asynchronous socket receives and writing the data to a disk file. I am finding all of the data makes it to the file, but it is SLIGHTLY out of order. The approach is to create a pool of contexts, each which has a 1K byte buffer. Then I start it all by getting a buffer from the po...more >>

Hello. I'm creating a windows service and would like to add a tray icon for it. Can this be done from a windows service app, or do I need to create a controller app? Thanks in advance, Mike ...more >>

Is there a canonical way to determine the path to the folder where the runtime environment is installed? The reason I am asking is that I have created a small Office Add-In in C# which needs to be registered as a COM component using regasm.exe during installation. So I need a way for the install...more >>

I've been looking around for info on this, but not finding much. What I'm trying to do is allow a user to drag and drop objects between two forms in my app. The objects are classes that I've built and I want the target form to be able to recognize what kind of type is being dragged over it a...more >>

Hello, I would like to define a date format that displays a datetime according to the current culture like this : if locale is 'fr' then date format would be "dd/MM HH:mm" if locale is 'en' then date format would be "MM/dd HH:mm" and so on.... But I do not want to manage each locale sep...more >>

hi, We have 1 lakh records with row size 3kb These records are palced by a service and another service will pickup these records and process. Because of this a huge burgen is there on the server and it has to do very fast hence, we decided to put this in ram itself. Can anyone sugges...more >>

How to position message box programatically using C# .NET? Thanks. ...more >>

I have a code sequence that goes something like this: 1. Start an asynchronous i/o with a completion callback of /cb/ Now when the i/o completes we end up in the /cb/ routine.... note that we are in a pool thread during the callback, not the main form's thread. 2. call the Endxxxx(ar) to ...more >>

Hello I have a programm that executes other processes. Everything was fine with framework 1.1. Now i have tested the assembly (still build with VS2003, framework 1.1) on the framework 2.0 beta. Unfortunatly in some cases, the method "process.WaitForExit()" waits infinite. When the pro...more >>

The (beta 2) dox say "The time-out ... moves the thread to the ready queue, bypassing other threads ahead of it in the wait queue, so that it can reacquire the lock sooner." To me, this directly states that when I Pulse a locked object that has threads waiting, a thread that is waiting with a ...more >>

We're trying to do serial comm with the new serialport object in the VS Beta 2/.NET Beta 2 system (using C#, but I don't think that's terribly important). I'm using a slightly cranky GPS receiver, and it works fairly well under Windows, but when hangs hard in the PocketPC 2003 emulator, and o...more >>

Hello all, Im stumpped. I have a small app i wrote in VB.NET which takes in a file name, and a bunch of other params, runs the file with the params, and then exits. At the end of the program, it can optionally echo back all the params it received in a msgbox. When the app is run from a co...more >>

Hello. I've created a windows service application. I am also creating a UI for it. I want to add a "Stop Service" button in my UI app, but am unsure how to code the shut down within the service app. Call Dispose()? Thanks in advance, Mike ...more >>

Sometimes my main form appears and sometimes it doesn't. VS.NET acts as if the process is running and I can click the "stop" button but I get no windows or forms. Here is my code: static void Main() { try{ MainForm frm = new MainForm(); Application.Run( frm ); } catch( System.Exce...more >>

Hi all, Can anyone tell me if it is advisable (or even possible) to define a namespace across 2 or more assemblies? For example, consider the namespace SampleApplication.Data.Providers Would it be possible to have assembly A define a class as part of that namespace as well as Assembly B...more >>

Every time I open up a web application in Visual Studio, I get the following error message: Visual Studio .NET has detected that the specified web server is not running ASP.NET version 1.1. You will be unable to run ASP.NET Web applications or services. Not surprisingly, I'm unable to run any ...more >>

I am using the asynchronous I/O model to receive data over a socket, and asynchronously write the incoming data to a disk file using FileStream. So long as the pending writes have not yet completed I continue to allocate more read buffers. As a result I can get a backlog of about 250 disk wr...more >>

Seeking some hints from a real framework asynchronous I/O ru of gu. I am trying to find the absolute fastest way to write binary data to disk files in VB.NET. I am working on an FTP server. In my development testing I have found that I can receive about 60 mbits/sec over the socket data co...more >>

I have created a mixed mode (managed + native) application that links to a mixed mode dll. It runs fine on all XP machines with Visual Studio .Net installed, but on other machines with the .Net framework installed but not Visual Studio, it displays a pop-up window entitled "Common Runtime Debu...more >>

I have the following code and when I use it to split a tiff file in seperate tiff files I receive a general gdi+ error. I have no clue what is going wrong. From http://www.codeproject.com/csharp/TiffManager.asp Code: using System; using System.IO; using System.Drawing; using System.Dra...more >>

Hello, I have a custom component class that I created that will basically save x amount of "objects." Once x + 1 object pops in, the oldest one falls off. It works great as I have it. In my test web page I create a Static object and use the New to create a new instance of it. If I don't...more >>

Hi , Can anybody help me why this code is failing? I am passing an array using reflection. using System; using System.Reflection; using System.Collections; namespace ReflectionTest { public class M { public void Method(string[] x) { Console.WriteLine(x[0]); ...more >>

Item #1: Project Reference > DLLClass1 Project Properties > Imports > Namespace.Namespace2 - In Code Behind: * Dim NewClass1 As New Class1 Item #2: Project Reference > DLLClass1 - In Code Behind: * Dim NewClass1 As New Namespace.Namespace2.Class1 * What will be better? Item #1 or #2?, D...more >>

Hi. Since my situation is a little complex I have simplified it for this post. I start a database transaction. Do some work with it in a try-finally block, and in the finally block I dispose resources. I would like to in my finally block detect if we are leaving because of the code actually ...more >>

Hi all, I've uninstalled Visual Studio .Net 2005 Beta 2 and need to reinstall Visual Studio .Net 2003 but I get an error that the .Net Framework 1.1 and J# redistributable packages cannot be installed. Is there a tool to clean up the mess the Beta leaves behind? Thanks, Ivan ...more >>

Hi, I am setting System.Threading.Thread.CurrentPrincipal to a Windows pricipal before I go ahead call methods to process, sometimes cross assembly. The problem I am facing is that intermittently the WindowsPrincipal object within seems to be garbage collected because I get "Handle is...more >>

Hi 1. I am in process of designing N-Tier Application using ASP.NET. Can anyone guide me the right material or microsoft guidelines document which I can used in designing the N-Tier application. 2. I would also like to know whether to use Web Services or .Net Remoting in designing N-Tier...more >>

Hi, Im in the process of writing a program that crawls a website. Im using the HttpWebRequest and HttpWebResponse classed to get content. To make my application more scalable, my application is multithreaded, with each thread making a different request. One problem Ive ran into is that w...more >>

Class A extends Control and creates a "new" Size property hiding Size from the Control class. A method M from another class (not related to A or Control) has a parameter of type Control. Question: If an A object is passed to M, is there a way to call Size from A instead of Size from Control ...more >>

Hello, I have some binarystrings in the registry (from an older j++ app) that I need to convert at runtime to ints. What is the best practice for this? In J++ you could just call Integer.ParseInt(val, 2); I've tried Convert.ToUInt32(object, int) but I can't get the compiler to believe t...more >>

Dear all, I am facing a frustrating problem in trying to make sense of an existing MMC Snapin developed using Visual Studio .NET by You-Know-Who. Well, the project type for the Snapin is a Class Library. Once I build the solution from visual Studio .NET, the solution consisting of the Cla...more >>

In Java, creating a class that represents a tuple in a database is relatively simple because if you have a field for, lets say, "Quantity" that is an integer, you can set it to null. Since .NET uses a stack for these Value Types, the integer (Int32) has an initial value of 0 and you can't set...more >>

i want to learn .net and vb.net in a propare steps, How to proceed in this. If you can provide learning steps for .net it will be really helpful for me Thanks in advance Venkat...more >>

From the tests that I have done it appears the ArrayList IEnumerator is about three times slower than using it's IList indexer. I would think they should be roughly the same. Is there a reason they're not? -- Thanks, Nick...more >>

Hello, I've installed the .NET framework v2.0 beta 2 on my computer, but when I try to install SharpDevelop or other softwares, I still get a message "You must have .NET framework v1.1" ... Does someone know why ? Can't the 2.0 runtime execute 1.1 apps ? Thank you :) Olivier -- Ceci...more >>

Hi, Can someone tell me when .NET Framework 1.1 Service Pack 2 will be available? Cheers. ...more >>

Hi, I have 2 instances of a user-defined class. When I do a cls2 = cls1, and I change a property of cls2, this property is also changed in my cls1!! Does anybody know what the reason of this is? and how I can prevent it? Thanks, Pieter I'm using VB.NET 2003. This is my sample co...more >>

I'm developping an apps which would manage 2 file type (I could foresee so far). I would like to provide each of them with its icon. Now, in the "Good Old Win32 days" (which I never practice ;-) I could just embed Icon resource in my app, with a negative index, and register with windows sh...more >>

I can't seem to get Trace to write to a file unless I explicitly call Trace.Close() at the end of my app. My log files don't flush until I close this. Is there a way to view the trace output files during application running without needing to call Trace.Close()? Or does it auto-flush after a...more >>

Hi, I have the following code (from a project I found on the web) that deletes a subkey. RegistryKey root = Registry.ClassesRoot; root.DeleteSubKey("AllFilesystemObjects\\shellex\\ContextMenuHandlers\\CleanVS"); It throws the following exception: Void DeleteSubKey(System.String, Bool...more >>

I have inherited an application that uses Regular Expressions to find items out of a data string and I am getting an odd result. It appears the regular expression engine is grabbing the wrong value. For ease of the post I have simply grabbed the relevant pieces of code without comments. Dim...more >>

Hi all, Can anyone tell me if it is advisable (or even possible) to define a namespace across 2 or more assemblies? For example, consider the namespace SampleApplication.Data.Providers Would it be possible to have assembly A define a class as part of that namespace as well as Assembly B...more >>

Hi, I'm ne to this subject, and has been looking around for some software that does the Object-Relational-Mapping, and generates the Data Access Layer. I found alreaddy a lot of application that doesn ice stuff, but none of them was really exactly what I was looking for. It need to be: - free...more >>

A common issue that I see in the microsoft.public.dotnet.framework.adonet group is that if you want to delete a DataRow from a collection of DataRows (e.g. myTable.Rows), you can't do this using a foreach loop like this: foreach(DataRow row in myTbl.Rows) if(someCondition) row.Delet...more >>

Hi The following source is written in VB. Now I want to covert this source code to VC++ .NET. Could you please try to do this translation someone who have knowledge in VB and C++? Function Convert(ByVal MyNumber) Dim DecimalPlace, Temp DecimalPlace = InStr(MyNumber, ".") Te...more >>

Actual trouble ticket follows. Reference DEJ-83192 to support@cybersitter.com I'm not a programmer, I've rudely crossposted this, and I apologize for all of that. I'm quite sure anyone here can point out many inconsistencies etc. I'm asking for folks here to download cybersitter and determine...more >>

I use shared methods for all my business logic classes to save typing when calling them (because I would not need to instantiate the object). So I would use them like this : "dim ds as dataset = Employees.List". Is this ok or does this affect performance ? Thanks, Craig...more >>

Hi everybody, I've got a strange problem with my application (a windows application): I've got an application that is running on a client's production. (the system is dotnet v1.1 on windows XP sp2) Today the application suddenly displayed a message box with this error: Setup Error Faile...more >>

If I have the following class: class dummy { public const string L_NAME = "Neo"; }; How can I get the value of L_NAME using reflection?...more >>

Hi, I had Visual Studio 2003 installed, and installed also visual Studio 2005 Beta 2. The problem is, when I am starting now (double click) a solution (*.sln-file), it always start it with Visual Studio 2005, and not 2003. I'm trying to change it in the registry, or jsut simply with an "open ...more >>

Hi, Can I use .NET Framework 2.0 using VS.NET 2003 IDE? My be possible, but just curious to ask. Is it possible? Thanks Atul ...more >>

Hi, The problem : Have a system tray application.This has a menu item 'Exit'. On click of this a differnt application with a UI which runs in the background should close. The other application requires a Keyboard combination of Ctrl + Shift + Alt + X to close it properly. After closing the ...more >>

Hi, How fast and efficient are streams in the .NET Framework? Do they consume large amounts of server resources (cpu usage, memory, etc.)? Thanks, Roshawn...more >>

We have an application that is using sockets in a multithreaded environment. We are seeing a situation arise where the Connected event is firing and the DataArrival event fires so quickly afterwards that we cannot complete our connection processing logic and are forced to drop the data and there...more >>

how to detect who redirects traffic to a aspx page? is this info passed along in request object or can sites anonymously redirect traffic to other sites? ...more >>

Hello, I couldn't find within which MS aplications is installed .NET Framework to PC. Is installed .NET Framework with MS Office, IE, WinXP or with their service packs ? Thanks Pavko...more >>

I'm using the DirectoryServices class to try and create new virtual directories in IIS. Here's the code I'm using: System.DirectoryServices.DirectoryEntry oDE; System.DirectoryServices.DirectoryEntries oDC; System.DirectoryServices.DirectoryEntry oVirDir; string sIISPath = @"IIS:\\localho...more >>

Hi, I want a fast way to use assign a tha values in a DataTable to a collection/Array/List of Classes. Each record in my DataTable should be new Class, and tha Class would have property's for each Field in the DataTable. Is something like this possible? Or how should I do something like this...more >>

In my managed C++ code I would like to call the GDI+ text function directly. I'm refering to this document: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/gdicpp/GDIPlus/GDIPlusreference/flatapi.asp Which tolds me about a <gdiplusflat.h> header. However, although I have VS.NE...more >>

Hi, I need to implement my own ThreadPool class because I want to have control over the threads and their lifetimes. The ThreadPool class will take care of thread recovery in case threads lock up and the implementation provided by .Net does not provide for the same. My question now is...more >>