While running my application, either in or out of the debugger, after a while the message box pops up that says "MyApp.vshost.exe has encountered a problem and needs to close." What does the vshost.exe do? I don't get any other errors in my app and VB doesn't show any error. My application b...more >>

hi all, I need some high level and efficient ideas on how caching should be designed in the scenario below. The application and the cache will most likely be in VB.NET. I have a central interface (does not necessarily have to be a website) that customers will access. This interface would co...more >>

I am writing a program that watches a certain folder for incoming files & then moves those files to another folder. Here's the problem: if I copy a group of files into the watched folder it works fine, but if I move a group of files into the watched folder it doesn't do anything, the event han...more >>

Hi, How can I know how many columns has my datagrid. Thanks in advance. Hardik Shah. ...more >>

I am using VS 2003 and trying to build a standalone application. I have been writing all my asp.net work using DW and am just now trying to build a application that will read some of the tables I had written out from my web apps. I can get my DataReader to read my data fine. But I wanted ...more >>

Hi all, hope someone can help point me in the right direction, or maybe just have a chat about the following. Being a bespoke developer I have played about with piracy problems in the past. In most cases where systems are small and very specific there has been little point in protecting ...more >>

First of all, I am using the .NET 2.0 framework with Visual Studio 2005. I have two forms. One is a form with a TreeView control on it (used as a menu - kindof a favorites list) and the other is a form with a WebBrowser control on it. The TreeView_Click event fires up the other form with th...more >>

Help link... ms-help://MS.VSCC.v80/MS.MSDN.v80/MS.VisualStudio.v80.en/dv_fxmclictl/html/138f38b6-1099-4fd5-910c-390b41cbad35.htm ....says "You can disable this exception by setting the value of the CheckForIllegalCrossThreadCalls property to false. This causes your control to run the same ...more >>

what choices do I have to play sounds in a program using vb.net? Or, I guess if nothing vb specific what windows API(s) should I look at? I am interested to find out whats needed for playing short wav files for sound effects as well as playing longer sound clips in mp3 format. can anyone point...more >>

Hi, I have created a program which opens up ".pcfs" files, a kind of text file unique to my program. I want to be able to click on these files and have the program launch AND load the contents of the clicked file. I have been able to do the first half. I can click on a .pcfs file and the pr...more >>

Using controlpaint i can draw an arrorw pointing to the right like this ControlPaint.DrawMenuGlyph(e.Graphics, New Rectangle(0, 0, e.Item.Bounds.Width, e.Item.Bounds.Height), MenuGlyph.Arrow) but i need to draw that same arrorw pointing down for a dropdown menu type situation... anyone k...more >>

Dear Group, When I add a DataTable to a Typed Dataset, and a TableAdapter to the DataTable, I am able to create methods to send updates directly to the database (GenerateDBDirectMethods), however when my TableAdapter Fill SQL contains a WHERE clause which looks up a field from another joine...more >>

I am a little problem deciding when to use delegates and when not to. Is the following a good example? I have an order class and a messenger class (this does things like send emails, pages, faxes). Currently we create the order and in the creation function, we call other functions in sequen...more >>

Consider two Pictureboxes and the following: PictureBox2.Parent = PictureBox1 What does that do. The only thing I could find in the help relates to Control.ControlCollection but I think there are other considerations. I'm guessing it does not relate the size nor location of the boxes. Right...more >>

Hello, If I place a panel control on a form and place a datagrid on the panel, is there a property for the panel to resize with the form? I am sure there is. I just can't remember what the setting is/are. Once the pane resizes with the form if I place a datagrid on the panel and dock i...more >>

I can't round my numbers. i have a single, and i'm trying to round it so that there's only one decimal place. here's what i've tried: ..Val = CStr(Format(sngTimeToTarget, "#0.0")) and i also tried ..Val = CStr(round(CDbl(sngTimeToTarget), 1)) neither of which do anything. i've even tried m...more >>

I'm trying to match fields from XML feed to a datarow, but I get a "System.InvalidCastException: Object cannot be cast from DBNull to other types" error at the PkgAmount line. This code was converted from original C# code, so I'm wondering if it has something to do with C#'s strict datatype crit...more >>

I have a VB ASP.Net application where the user can upload a file using the FileUpload server control. I also want a thumbnail to be created for this file. Unfortunately I can see no means to determine when the file upload is complete so that I can use the MakeThumbnail function as part of the...more >>

I wanted to insert an animated .gif into my VB.net game but the problem is that I don't want to use PictureBox. Is there any other method to insert it? ...more >>

I'm attempting to use the FileSystemWatcher class to monitor a folder on a remote server. My app is running as a Windows service, currently on an XP machine, but it will be on Server 2003 in production. Everything works fine when I set the Path to a local drive (i.e. "C:\Test"). However, wh...more >>

I have written a serialized class that has several properties that are typed as a list of type class. When I deserialize an XML file, the list is populated just fine. But I am having trouble manually loading the class for serialization when the class has not been initialized by a deserialize. If...more >>

This seems to be a bit of a contradiction, but how can I construct a Generic class using a System.Type variable that is assigned at run time? Is there some parallel to the Generics concept that extends to having strictly-typed classes at run-time? I would gladly give up the compile-time error...more >>

If i have an MDI form, with tollstrips such as Menu, ToolBar or Status how do i stop a child form sliding under these toolstrips? eg when dragged or maximized. *guy*...more >>

Hi, wondering if I'm missing something before I log a minor bug to the VS2005 feedback page. In VB6, you could span multiple lines with comments by using a line continuation character as in 'this is the beginning of my _ comment which continues down to this line In VS05, the 2nd line...more >>

I'm drawing data from xml file, putting it into datarows, from datatable subroutine (UseXMLDocument) , and I'm getting a "System.IndexOutOfRangeException: There is no row at position 0" at the " Data.Append(dtaData.Rows(0)("Name") & "<BR>") " line. '''''''''''''' <%@ Page Language="VB" debug=...more >>

Hello, I have a question regarding VB code. Below is a microsoft page that contains code to move the mouse cursor with the keyboard. http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/winui/WindowsUserInterface/Resources/Cursors/UsingCursors.asp I have used VB code before...more >>

Hi, Is there any performance differences between using If->Then->Else->End if and Select Case -> case Else -> End Select ? Understand that select case appears better when evaluating multiple values, but would like to understand if one is better than the other for example when eval...more >>

Hi, I have an checkedlistbox with a lot of items, so there is a vertical scrollbar in the checkedlistbox. I want to make the checkedlistbox invisible when the mouseleave event goes off. The mouseleave event goes off when I move the mouse to the scrollbar. Can someone explain this to me...more >>

Hi, I am new with this Crystal Reports in VB.NET. When i add a new report (following http://msdn.microsoft.com/msdnmag/issues/02/05/Crystal/ ), the Field Explorer window does not appear on left side (or anywhere in design window) But when i press F5 to execute the project in debug mode and g...more >>

What is the best 3D Engine that can be programmed using VB.NET? ...more >>

Does anybody know the timing accuracy of VB.Net. I remember that in VB.60, one can only trigger an event with time accuracy <10ms. How about VB.Net? Was this improved? I am making a project for instrument controlling. The shutter should open for 10~100ms and I am wondering if it's possible or ...more >>

VB2005 I have an MDI application, which displays modal forms correctly, and starts up with the MDI form maximized however for non modal forms behavious is unusual all forms have MaximizeBox, Minimizebox and ControlBox set to false and WindowState = Maximized when the form displays it di...more >>

Hi What I want to do is for using with a PDA, but I think it's a VB.NET related question, so I ask it here. It's simple, an user is working with the pda, and from while to while, has to send data to a server via webservice. As the process to the webservice can take many seconds, and the user h...more >>

hello, I can't seem to make this work: VS2005 I have a simple program that uses a backgroundworker control to execute a long process (webservice call) if that webservice call fails, i want to raise an exception and display a messagebox. however no matter where i put the Try block to trap...more >>

i m looking for suggestions in this news groups what is the best way to delete files greater than x days. scenario / conditions a) d:\dir\queue\*.* files to be deleted. b) no-touch solutions : use filewatcher on the above directory ? c) the program will run locally on each machine ..or sh...more >>

Hi Folks In my object I am trying to implement a function in order to render the picture to XML (to generate RDL for SQL Server). That Function causes the error mentioned in the subject at the marked line. I read various articles about it but none of them seems to apply as I am not writing to ...more >>