Hi! I have a .dll library, with some exported function, which looks something like this: extern "C" { int exported_f (int (__cdecl *callback) (int a, int b)) ; } now, I want to invoke this function wihtin the managed code and supply my managed delegate function poiter as callback. I use...more >>

Jon skeet thank you for your reply This solution is already in the VSS and is being added to my team mate systems And i also had this project in my system Few weeks before i stooped my enhancements in my project which is in VSS So i could not see the project (which is VSS) in the start pag...more >>

Hi all If I have a method for inserting data to database and it take a parameter dateTime in String. Since C# does not have a function to test date like IsDate in VB.Net. Would it be a good idea to use a static method in a static object to convert the dateTime to DateTime datatype as follows pub...more >>

Is there a way to configure Outlook Express to automatically ignore all posts on this newsgroup that are crossposted to any other group with the phrase "advocacy" in the newsgroup name? It would be easier than doing a manual ignore on each of these threads... I wouldn't even have to see them....more >>

Is there a way to grab a "Screen Shot" that includes "Tool Tips"? I saw this code someplace, cant remember where. But it doesnt grab "Tool Tips". Is there a better way to do this in .net? Thanks! Private Declare Function CreateDC Lib "gdi32" Alias "CreateDCA" (ByVal lpDriverName As Stri...more >>

Hi all I have a class implements IComparable interface, however, I got a error on the following method protected override int IComparable.CompareTo(object value .. Does anyone know the reason? one thing question is what is the difference between string and String in C# Than...more >>

I have an Access frontend (.mdb). Can I convert all, a portion, or any of it into vb.net. Even if I can't convert it all, any portion of it would be a great help. For instance, the forms, the queries, modules, or the macros. ...more >>

Is it possible to convert a hex/ascii string to binary? ie. Dim s As String s = "AA" output = Hex2Bin(s) '10101010 also is there a bin to hex conversion function? ...more >>

If I want to write the code, so... is everything same in both case (udp, tcp) with the only difference of the .net Socket class constructor? socketType for udp: Dgram for tcp: Stream protocolType for udp: Udp for tcp: Tcp Or there are many others things that change bet...more >>

It looks like this problem was already posted (in two different newsgroups): http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=utf-8&threadm=08f701c39712%24d47cf3b0%24a401280a%40phx.gbl&rnum=2&prev=/groups%3Fhl%3Den%26lr%3D%26ie%3DUTF-8%26oe%3Dutf-8%26q%3Dselectactiveframe%2Bdrawimage%2Bbug%2...more >>

Hi, I'm about to start migrating a system and have some questions. I'm just starting with dot net, so some may be silly. . . My current application is a vb6 front end and an access database split into an app.mdb and data.mdb. We have been using pocket access for pocketPC data entry. We only...more >>

Hi Friendly Newsgroup Readers, I switched to another PC and pulled all my source code for my solution to my new PC, after first dutifully adding my web project directories as appropriately named virtual directories in IIS. But after much fiddling I still cannot open my web projects from V...more >>

I know this is a very newbie thing to ask, but... What's the point of the Global Assembly Cache? It reminds me of the c:\winnt\system32 directory from my C++ days... just a big confusing jumble of shared DLLs. This made sense in the "old days" because hard disk space was more expensive so peop...more >>

Hi, We've recently completed the design for a three tier web application and are about to commence development. When building and deploying is it better to have a VS.NET project for each logical tier and another for 'Utility' classes. That is each project will only contain classes for a pa...more >>

Hi, I'm designing an application in which the user will enter a credit card number and expiration date. I want my application [which will be a .NET service running on my server] to check with the credit card company to get authorization for billing. If the authorization goes through, my ap...more >>

Hi All, This is what I am trying to do.I have an aspx page with the the following code block. <asp:DropDownList id="DropDownList1" runat="server" DataSource="<%# GetUsers%>" DataTextField="user_email" DataValueField="user_id"> </asp:DropDownList> GetUsers is defined in the .vb file...more >>

Hi there, I need to know what is the fastest way to copy a 9mb FileStream into a MemoryStream? Must I read a big buffer then writting it in my MemoryStream or is it a better way? Thank you ...more >>

I am interesting in converting all or at least any portions of a Access 2002 frontend.mdb and backend.mdb into VB.net. Are there any conversion tools for such a monstrous task? I am especially interested in converting the layout of the forms and the queries. Any portion that I can convert will...more >>

Hi Guys, I am getting this error on our application. "The viewstate is invalid for this page and might be corrupted." I have spent about 2 days now goin thru the user groups and couldnt find the solution to this problem. Most of the postings ask if u r on a web farm or using Server.Transfer. ...more >>

I' am planning to buy a ".NET bible". (I'd looking for an insight and deep look into the .NET framework , Web Applications and ASP.NET, Desktop applications, XML and Web Services, Web Applications and ASP.NET, ecc) I 'm thinking of buying "Developing .NET Enterprise Applications" (by John K...more >>

I have tried to print pdf by using gswin32 and call it through the process class but I can't change the paper orientation....no matter I have set dORIENT1 = true / false...it is printed as portrait.... Does anyone know how to change the paper orientation in my case? or having some other ide...more >>

dear all I need to create a module which will handle a TCP comunication. In that module i need to create a thread which will only taking care of polling an open listen port for incoming data. As soon as data arrived the thread should send an event to the main application does any one have experi...more >>

Hi all, I want to ask how is licenced C# compiler that is distributed in free .NET Framework SDK. Can I distribute and sell programs compiled with this compiler? What about ASP.NET webs compiled with this compiler? Thanks a lot, Andy...more >>

Question. When I strong name my shared assemblies and enter them into the Global Assembly Cache why doesn't it show up in Visual Studio when I click on add reference in the .NET tab. Is there something i'm missing? Nick ...more >>

Hi, Whats the best way to infile edit a value in an XML file? I want INI file update functionality on a XML file. This will come in 2.0 I was told, is this true? Until then how can I do this easily today? Thanks ...more >>

Hi, I am trying to create a dataset with 6 tables and 5 relationships created between them. I am creating it in the Form_Load event. However i keep getting the following error... An unhandled exception of type 'System.ArgumentNullException' occurred in system.data.dll Additional information: 'co...more >>

Hi, When we get generic collections will the serializer change so we dont need to give it a type parameter for collections ? Currently today if we serialize an ArrayList, we have to give it a Type array. If the collection is of a specific type, is this still needed? Thanks. ...more >>

Supposing that i am using remoting using singleton class.Now assuming that 10 clients are requesting the object(since singleton creates only one instance for all the requests) at the same time. How does .NET handles such situation? ...more >>

Is there an attribute or property that I can set in my AssemblyInfo.cs that is used to setup my COM+ application so that I can set the "Minutes until idle shutdown" of the app to something other than the 3 minute default? I am using others like: ApplicationName ApplicationActivation Applicat...more >>

Why, when I start my app by dragging a file onto it, does System.IO.Directory.GetCurrentDirectory() return "C:\Program Files\Common Files\System\Mapi\1033"?? And how do I get the Current Directory (the one my app is sitting in) if I start my app by dragging a file onto it? I have scoured th...more >>

where can I download. ...more >>

Hi In C# I would like to be able to set the printer device for printing a document without using the PrintDialog. I am writing a pocket pc application which uses a web service to print. I can only make the web service print to the default printer installed on the web server, and need a way to ...more >>

This has occurred in MC++, but since there is very little response on that NG, I am also reporting it here in the hope that someone can find me a workaround, and report it to MS. If a __value class with an event is put into an assembly and a __gc class in another assembly, which has an instanc...more >>

OK...I must be missing something...can someone tell me what I'm not doing properly... First, create an assembly with a single interface in VB.NET as follow Public Interface IDo Function Bark(ByVal lVolume As Long) As Strin End Interfac Pretty simple.. Now...in a second (C#) assembly......more >>

When I am trying to connect to oracle working in asp.net I am getting the error "ORA-12154: TNS:could not resolve service name", I have defined the service name in the TNSNAMES.ORA and able to log to oracle through SQL Plus. what could be the possible error for this thanks in advanc Varadara ...more >>

I am unable to add a solution from source control into my system I followed all the steps as in the msdn I am getting error saying The source control server folder youselected containd no Vstuido.net projects files or solutions. Please select the different server folder Please resolve my prob...more >>

Hi I purchased an h5500 series HP pocket pc. Using VS.NET 2003 I am able to build and deploy to the Pocket PC 2002 Emulator but not to debug the app The app is "installed" in the emulator just fine but that's all that happens What's going on Thanks Juan Dent...more >>