Hello, I'm writing an Application for a serial device, which is using a USB-to-Serial Converter. I'm polling that device for new data every 500 ms. So this is working fine. But if the customer unpluggs the USB-to-Serial Converter, I get an System.UnauthorizedAccessException on the next w...more >>

I've developed a test application on my PC that uses the JET Engine. The connection string is very basic and is constructed as follows: connectionString = String.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source='{0}'", modelName); On the development PC, this works fine. On a test PC,...more >>

I need to pass a DataSet from my windows application in vb.net to a webservice . Thanks In Advance ...more >>

Hello, I'm using dotNET 1.1 and I found this wonderful class, HTMLTextWriter, which is half of what I need :D I also need an HTMLTextReader but, judging from the help files, it's not there. Any suggestion on what the correct class name may be? TIA, Andrew...more >>

Hi I have a windows application in VB.net which creates a dataset and updates the dataAdapter by connecting to the SQL Server 2005 and sends the dataset as a parameter to my webService.My code is Dim strCon As String Dim sValue As String Dim strQuery As String ...more >>

The uninstall tool indicates that all previous installs have been uninstalled. The download of 30MB but then just as the installation starts I get the error log: [09/29/06,21:45:35] VS Scenario: [2] CPrevProductInstalledCheck failed : <font face=Verdana size=8pt> Thank you for participatin...more >>

Hello. I have an application that includes a DataGridView. This application load data into a DataTable based on mpeg audio files which the application validates. Since this can take some time (specially if you choose several large files) the void which load the data runs on a seperate thread....more >>

Hello, In an application that worked fine until recently I have started to have problems with calculations involving two doubles. For example: -24.708 + 26.0 = 1.2920000000000016, however, -24.708 + 8.0 = -16.708. What would cause this? I don't think the numbers are so large that it wo...more >>

in visual studio 2005 express VB I found mention of drop style for listbox but so far my searches came up empty as to how and what they are. I was to set height and I figure I can probably do something with setting height during the focus events to simulate drop down list However if there ar...more >>

OK, I can't figure out a way to optimize the following VB 2005 code using StringBuilders: Public Const RecSize as Integer = 105 Private buffer As String Public Sub New() init End Sub Public Sub New(ByVal value As String) buffer = LSet(value, 105) End Sub Public Sub init() ...more >>

what is a good general regex expression for html <img ....> tag? I tried "<img [/:.a-z =0-9\""_;&]*\->", RegexOptions.IgnoreCase) but it is not quite working thank you for your time ...more >>

We have a web application running on classic ASP, where the session is maintained in the Oracle DB, so every page redirect/form submit can switch servers without any problem we are looking now at writing a .NET application on the farm using same Database. a couple of questions/notes: - I u...more >>

I am a newbie in C# programming. I've been working in C++ language for some years. The new/delete statement in C++ is rather slow so it is recommended using static data structure in some cases which require very fast performance as you know. However, there's no way but using value type class ...more >>

What is the algorithm of lock(obj) { ... }? The statement above roughly makes me guess that the lock/unlock algorithm in CLR is inefficient because it adds a critical section for each CLR object instance. Am I right? Please reply. Thanks in advance. Hyun-jik Bae ...more >>

This is kind of a question about C# and kind of one about the framework. Hopefully, there's an answer in there somewhere. :) I'm curious about the status of 32-bit vs 64-bit in C# and the framework classes. The specific example I'm running into is with respect to byte arrays and the BitCo...more >>

Is it possible, using static properties, to have a shared object in the GAC that can be accessed by differnet processes? If so, how? If not, how can I have a shared .NET object that can used by different processes? Thanks. Amil ...more >>

Hi, I am currently getting System.InvalidOperationException: Hashtable insert failed. Load factor too high error. I noticed that this only seems to happen, when we are trying to do run a Stress Tool with a few users(5-10). I know this is a known issue in .net 1.1, but there seems to be ...more >>

I saw a question from Norman Yuan several months back with the same problem I'm having now. Never saw an answer. My currency that should be displayed as $200.00 is displayed as ¤200.00 randomly when my production server is under load. It doesn't happen on the dev computers. An IIS reset tem...more >>

I can't for the life of me figure out how to check or uncheck a cell programmatically. I've looked in Lutz's reflector to see how the control is doing it and it calling an UpdateButtonState method that I don't have access to. This must be super simple but I'm just missing something. Any hel...more >>

We have a utility that creates a resources.dll on the users computer. Can anyone tell me if .Net Framework SDK tools, like al.exe, can be distributed with .Net applications? Thanks, MattH ...more >>

I have a Custom Collection Editor and overridden some methods - everything works fine... BUT I now want to block the up and down buttons, so the User won't be able to move the Collection Items within the Index. Is there any possibilty by overriding a method so it won't move the collectio...more >>

I followed the following example to create an html text editor. http://www.codeproject.com/useritems/editor_in_windows_forms.asp It works great but when you press enter in the text box the control inserts p tags instead of br tags. So you end up with double spacing throughout the docume...more >>

Is it posible to get/set the cursor position of the webbrowser control? With a regular text box you can use the SelectionStart property. Any help would be greatly appreciated....more >>

I have some Jscript compiled code the works on XP but gets stack overflows on my 2003 server. The Jscript code uses recursive calls. If the nember of levels is more than 4, I receive a stack overflow. On the XP (using same .dll compiled code, .net 1.1) I can have more than 10 levels withou...more >>

hi all, please review the following code snipped, my goal is just to transform a document. The problem is that XmlWriter.Create do not honor passed Trans.OutputSettings. The debuggin shows that Trans.OutputSettings.Encoding is set to {System.Text.UTF8Encoding}, but OutWriter.Settings.Encodin...more >>

Hi All, I have created an App Domain in a process on the first request. Now I would like retrieve the same AppDomain everytime there is certain type of request. Is it possible? -- Regards, Debasish Pramanik Assetlink India. Phone: +91 20 26119531 (226) ...more >>

For some reason the question, "Can I make an EXE that is both a Windows Service and a Console Application?" has come up quite a bit for me over the last few weeks. I've been doing this for years, but for some reason I've never seen it documented anywhere. C# (or VB.Net) is perfectly happy t...more >>

Is there anything correspondant to the iterator for Dictionary<>? For example, something which is similar to std::map::iterator in C++? Reply please. Thanks in advance. Hyun-jik Bae ...more >>

Hi all, I read I can use SMTP channel to send SOAP message. But what is the benefit of using SMTP instead of TCP, HTTP? Hardy ...more >>

Hello, I have a .NET object that's registered in COM+. I'm calling it from a VB6 dll that's registered in COM+ like so: Set objEFV = CreateObject("MyDotNetDLL.MyClass") strResult = objEFV.DoMyMethod(Param1, Param2) I think it's registered correctly. I generated a .tlb file for it on...more >>

What is the interval when garbage collection is run and is there a way to monitor it through Perfmon?...more >>

Does the file system watcher have a why to tell if a file or directory is created. ThaFileSystemWatchernk you -- Jerry ...more >>

Hi, Can anybody please help me out to solve this problem. I try to find the solution of it all around but i m not able to get it from anywhere. I have created on ActiveX control in VS 2005. I have put one Third Party Control(which is created in VB) on that ActiveX control. Now I have deployed t...more >>

Hi, I have a client application that is using remote objects from a IIS. Everything works fine when using this from my code. However. When a word add-in loads my code the request fails with a message that it can not find the a assembly. The assembly in question is one that is reference...more >>

I'm trying to use the StreamReader to read messages from a newsgroup but after downloading several messages it will get stuck on the streamReader.Peek line and never timeout (or at least not after 12 hours) Any suggestions on how to timeout? ...more >>

I have a device application with a database in it.I want to push the tables from this database to the one in Remote SQL Server.I have written the both the devce and the Windows application in VB.net. The methods to accomplish the aboce are RDA,WebServices,Replication. Now i do not know how to wr...more >>

Hi, I design programs starting with the database and once I have a solid database I buikd the classes from these and work my way upto the interface ? is there a name for this development style ? does it fit into top - down , bottom - up design ? Thanks ...more >>

Hi, I try to read some data from a server using LDAP with the System.DirectoryServices.Protocols types. I startet with: .... string server = "servername.intern.MyCompany.de:52000"; LdapDirectoryIdentifier ldapDir = new LdapDirectoryIdentifier(server, false, false); LdapConnection ldapCo...more >>

Hi, I want to create a new constructor in a class that inherits from another... in VB.Net I still want to call the base class after some code has 'manipulated' the parameters VB is telling me i carn't as MyBase.New needs to be the first call in the New methd.... But how else could i ...more >>

Any built in framework function that takes a string array and converts it back to a concatenated string with a delimiter? Thanks. ...more >>

I have a website which currently uses an ActiveX component made in Delphi. The ActiveX provides a simple but nice functionality to the website. Recently, it was ported from the old Asp, to Asp.Net 2.0. I was wondering, if I want to replace the Delphi ActiveX component, what could I use to create...more >>

Hi, I'm currently building a little web site for me and my friends where we would like to be able to post big files (10Mb to 250Mb approx.) Right now the ASP.Net UploadFile control can't do it as we are limited 1) by the MaxRequestLength (4Mb) and 2) with big files (such as 250Mb) the server ...more >>

Hello I am having an issue with re-installing a DLL with the GAC. When I modify the DLL, I first unistall the assembly by right clicking on the assembly and select uninstall. I then copy the modified DLL to the assembly folder. Everything looks like it worked fine, except I do not see ...more >>

hi I have a web page with displays informations from an xml. On the same web page is a "save xml as" button and when the button gets fired, I want to display a save as dialog for the user to save the xml in a file on his client machine. Is this possible to do, we have savefiledialog in winfor...more >>

Hi there, I've got an IIS webserver running on a WIN 2000 Pro machine w/ installed NET Framework 1.1 hosting an ASP.NET application for more than one year - working perfectly. No changes to the system or the app. Today calling an aspx page on the local machine suddenly results in a crash o...more >>

Hi, I was testing out a simple project and I did a "setup" project for my simple application. After installed the application, everything went horribly wrong. All my other applications executable has been "hijacked". Whenever I click any program, my simple application got launched. I can...more >>

Hi I just thought of writing my MCTS exam, which targets .NET 2.0. However, i also came across many info on .NET 3.0, now this just makes me to think, whether should i go ahead and do MCTS? Any idea when is 3.0 getting released and is there any new IDE again going to be launched for it? ...more >>

Hi everybody Do you know how to change which framework a web site should use - = programmatically? For example: my web server has both Framework 1.1 and 2.0. My = installation/deployment program has to set a specific web site to run = under Framework 2.0. How to do it through ADSI or else?...more >>

Hi, all I want to customize the column of DataGridView as a DataTimePicker control in a windows form, how to do this? Could you give me several samples of VB.net? Thanks in advance. Steven ...more >>

Do I need version 1.1 and it's service pack if I install version 2? Thanks in advance....more >>