When I OpenPrinter() with defaults set to the result GetHdevmode() result, it fails with 1804 (The specified datatype is invalid) error: DEVMODE *pDevMode = (DEVMODE*) pd.PrinterSettings.GetHdevmode(); try { IntPtr hPrinter; Win32Check(OpenPrinter( printerName, out hPrint...more >>

Is there any API or tool available? Thanks. Jim...more >>

Hello, friends, In c#.net, what is the best way to prevent users from creating multiple instances of an app? I found a few ways, but not sure which one is the best. (I know in VB6, we do something like: If App.PrevInstance Then End) Thanks....more >>

Hi, I am trying to do a property on a class with datatype decimal including scale and precision. Thus: Private _Code2 As Decimal(3,2) Public Property Code2() As Decimal(3,2) Get Return _Code2 End Get Set(ByVal value As Decimal(3,2)) _Code2 = value End Set End Property ...more >>

I've inherited some legacy code that I'm supposed to base my own work on. I thought I was a fairly experienced VB.Net programmer but I've never seen anything like this before. The programmer has created a NotInheritable class full of shared properties and functions. It contains the foll...more >>

I have a query regarding launching a .NET smart client application via ASP. The smart client application is launched via asp - client side VB Script using "window.open()" passing in the URL location of the smart client. Using IE 6.0, this works fine and a window appears momentarily while the s...more >>

Hi, I want to be able to continue working with some assemblies after they've been installed/started as a service. Does anyone know anything about setting up shadow copying functionality for a windows service? Thanks, Matt ...more >>

Hello LIST, PLEASE, PLEASE HELP!! I am trying to fix my visual studio installation, I dont know what has happened, but I have lost SO MUCH TIME TRYING TO FIX THIS PROBLEM WITHOUT ANY SUCCESS. And especially when you are self employed every minute can count, I load up visual studio 2005 w...more >>

Hi all, I am having this problem with C# 2005 professional, while I could never see such a thing in VS 2003. The problem is that the form designer doesn't reflect the changes I make to a form through the property panel on-the-fly. Even if a change is reflected in the designer, when I compil...more >>

Recently, i am busying myself on a project that support both .NET Framework 2.0 and .NET Compact Framework 2.0, with the same set of c# code, but have different project properties and references. The question is how could I achieve this, should i create separate project for each purpose? ...more >>

Hi I have an interesting issue, I hope someone can shead light on. [I posted this under ASP.NET as well just in case , please forgive the duplication]: I have a 2 server "web farm" with a web app that produces image files. To ensure synchronization of content on both machines, we have buil...more >>

Hi, I am trying to create an Installer from the Setup Project in VS2005. Right now I am having it do some pretty tame stuff; - Create some directories - Create some reg keys Unfortunately I am having a hard time find documentation on this type of project. I.e., what if I want to chang...more >>

Okay, someone please tell me what I'm missing here. Lots of controls have a wide variety of events that occur when properties for the control change. The TextBox control itself has a wide variety, inherited from Control and TextBoxBase (including a "TextChanged" event, which I am using ...more >>

Hi, I’m looking for an easy way to read and set the Main Volume of the default speakers in C#. All I found so far is way to elaborate using the entire mixer with all the options of setting line in and mic levels and all that using API. There must be an easy way to set this using managed c...more >>

There are three types of strings for P/Invoke marshalling: LPstr, LPTStr and LPWStr. It is reasonable to guess that the types corrsepond to the Win32 platform types. However, I have mentioned and want to know why the platform LPTSTR must be mapped as LPStr and fails when marshaled as LPTStr. ...more >>

how could I grab an image from a video file using .net 2.0?? (any format - avi, etc) ...more >>

Hi, In ASP.NET applications, the .NET framework maintains a thread pool to process user requests by default this value is 25. 1) Whether this pool is managed by IIS? If we increase the size to 30 what impact it will cause on IIS? 2) Suppose if I create three threads from my ASP.NET appl...more >>

I selected and changed personal writing to a font called Bookshelf Symbol 7 for privacy reasons. Now when I try to change it back to the original font it only shows me small squares instead of letters. Can anyone help? It's very precious infomation to me! I"m using Microsoft Office word docume...more >>

Hi there, Can anyone explain the following (very) simple scenario. 1) I make an exact copy of my "DataSet" and delete one record from a given table (in the copy) 2) I invoke "DataSet.GetChanges()" on the above copy and pass the results to "DataSet.Merge()" on the original copy 3) If I no...more >>

Hello, I did my initial search on this to get done, and now hoping that someone will come up and hel me. Scenario is: When I execute my application it opens the Shell(Windows Form), which contains access to different modules of the application. Now I open a Module window(Windows Form) ...more >>

If I have a third party precompiled DLL file, how can I know which version of the .netframe work it will work with. Is there any tools I can check the DLL file? ...more >>

I know the .NET 2.0 x64 redistributable contains the both the x64 and x86 versions. Is this also true for the .NET 3.0 x64 redistributable? I can't find a definitive statement....more >>

Hello, is there anyway to know which files have been updated in an application published with clickonce? thanks ...more >>

i want to develop a web-based time sheet application in asp.net. we haev a licensed windows server 2003 running on our system but can someone plz tell me if there will be licnesing cost of using asp.net for development in pakistan ...more >>

Hello all, a client of mine requires their web site to work with sami language, which is spoken throughout northern parts of scandinavia. I'm trying to set up the culture with ISO 639-1 compliant abbreviation se-FI which works just fine in my development environment. Nevertheless, in producti...more >>

Hi all, I need to understand what kind of error is catched in a try/catch block because in the catch section I need to do different things depending of the error type (sockets & co) I have these 2 situations (generated by a DataStream.EndRead operation), the messages are in italian language ...more >>

Hi, I have a situation where I want to generate code (whether C# or IL I don't know which is easier or whether C# is slower because needs to be converted to IL at the end). I have a dynamic SQL string, say: -------------------- "Select " + cslist + "into :lsVariable, :llidValor" + " FR...more >>

I'm being passed a string that has been encrypted using 3DES. I'm writing a function to decrypt that string. All is well except I get garbarage before the decrypted string I'm supposed to be retrieving. For example I should get back 12345678, but instead I'm getting back ?l???#?K1234567...more >>

Hi, I need to run a piece of .net code every time a file is added to a certain folder. Any ideas best way to do this - preferrably in .net? Thanks for all help. Regards John ...more >>

Hi there. Recently event viewer started showing the .NET Runtime 2.0 error event. The body is: EventType clr20r3, P1 w3wp.exe, P2 6.0.3790.1830, P3 42435be1, P4 system, P5 2.0.0.0, P6 45b04225, P7 3a3e, P8 7a, P9 system.unauthorizedaccess, P10 NIL. Have already reinstalled the 2.0 framew...more >>

I have two questions. The first question is simply if what I'm about to describe is the best way to do what I want to do. If not then I'd very much like to know how others are solving similar issues. What I have done is to build a class library with some general code in it. Part of this cod...more >>

I have written a DLL to give to a customer that he can use to search a database and bring back some results. When he calls my search function, once the search is performed a windows form is opened up with the results. This functionality works fine if called from a windows form but throws a ...more >>

we are using PrintDocument class in the .NET Framework library to print a file to a printer that uses the Generic/Text Only printer driver. It is working fine if we try to print from the XP operating system. The same is not working when we move to the windows 2000 server family. We are gettin...more >>

Hi, Can somebody point me to a Document/View implementation in .NET? What are the usual approaches for managing SDI/MDI style apps in .NET? regards, Fallen ...more >>

i just got a inspiron e1501 with vista home premium,how can i get the pointer to stop openning everything it happens to come across,it acts like it has some kind of auto click function if it goes over something that can be clicked on....more >>

Hi , I have installed the .net framework 1.1 and 2.0 at a clean winxp, I can found the .net framework 1.1 wizard and configure at control panel -> administrative tools but I cannot found them for 2.0. so , how can I launch .NET Framework 2.0 Configuration? -- Gordon...more >>

Hello, I'm writing an application which use APM. For example: class Program { static Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); static void Main(string[] args) { IAsyncResult res = socket.BeginCo...more >>

I'm actually looking for a headstart for a "Configuration Application." We need to do something like Dell Computer does when you go online and configure a computer - it's got to have infinite optioning capability with trees and compatibility and dependency attributes. I'm looking around at ...more >>

Is is possible to replace a framework class for my application? Let's say that I want to add a new property to the System.Data.Dataset class. I can do that by extending the class. But I also want my new class to replace the default System.Data.Dataset class in the framework. Whenever System...more >>

I am fairly new to .net 2.0 development. I have created a simple web service application that points at a user's database using datasets and connections strings from the web.config file. At this point, I have to manually edit the connection strings contained in the web.config file for every de...more >>

Hello, I put this post here because I don’t found a Compact Framework group. If it is the wrong site, please, accept my apologies and move it or tell me the right forum. I need to develop an application in Windows CE .Net 4 devices. Actually it runs .Net Compact Framework 1 applications. ...more >>

I need to perform two functions that I can't figure out how to do as follows: Type GetUnderlyingTypeForNullableType( Type nullableType) { //For every value type T where nullableType = typeof(Nullable<T>) //need to return typeof(T) return .... } And a the revers function: ...more >>

We are using FxCOP in our coding process and implementing the Dispose pattern in some of our classes. Our resources are not unmanaged, so Finalizers are not necessary. Is there any harm in calling SuppressFinalize and passing an object that does not implement a finalizer? -- Brian R...more >>

Hello, I have some Word documents I deploy to my users via ClickOnce along with the application files. Unfortunately, I can find no way to put a shortcut in the Start Menu's Program group for the user to click (I can only show the application file and the website support shortcut). Could ...more >>

Hi, I'm currently working on a project (UIML.NET) where I need to detect dynamically when a property of a widget has changed. Currently I'm just registering all events the widget can throw, is there a better way to do this? So I need a mechanism that when for example a checkbox is enabled or ...more >>

Hi, I am writing a small utility to perform system maintainence tasks on Windows. In this, I am launching a MMC snapin as a process using BackGroundWorker and using the "RunWorkerCompleted" event handler to know when the snapin was closed. This works fine on Xp and Vista 32 bit and the RunWor...more >>

I am a real newbie to .net but have many years of experience with VB6 and java. I published a VB.net application and installed it on another machine. As domain admin it installs and works fine. However as a "regular" user I am not even able to run it once it has been installed. The security set ...more >>

Hi all, Say I have a couple of classes which implement an interface public interface IDataItem { int ID { get; set; } string Name { get; set; } } public class Foo : IDataItem { private int id; public int ID { g...more >>