While building on a class library for an VB.NET object model, I get something similar to the above error message, but not with C#. The steps to recreate the problem are as follows: 1. Build a RootLevel.dll containing only this code: using System; namespace RootLevel { public class R...more >>

While building on a class library for an object model, I get the above error message. The steps to recreate the problem are as follows: 1. Build a RootLevel.dll containing only this code: Public Class Root End Class 2. Build a SecondLevel.dll containing a reference to RootLevel.dll and...more >>

Before, I post the quesiton about"how to pass parameter between two forms", according to those kind people who answer my question. I did it sucessfully. Now, I face another question is that. Form A call Form B , and then FormB need to return the object or "string" to form A and then dispose itse...more >>

Hi, is it possible to get SQL Server list in VB.NET whitout SQLDMO, only with ..NET functions? Sergio ...more >>

Hi, I have a Funtion Function addLine(ByVal text As String, ByVal color As Color) RichTextBox1.SelectionColor = color RichTextBox1.AppendText("[" + Date.Now.ToShortTimeString + "]: " + text + vbCrLf) End Function that adds a line to my Richtextbox! Know i would like the Richtextbo...more >>

Hello, I want to create an application that checks in a database for new records and send a message over the network to all clients via a broadcast message (like the MSN messenger). So not a popup window, but a small window near the right bottom corner. My question is, how can i send broadc...more >>

I am stumped at the moment by something, and the searching I've done hasn't led to a clear answer. Here is what I want to do: I have two threads: thread A and thread B. I want Thread B to raise an event that will be handled within the context of thread A. By default, an event raised by Thre...more >>

I need the program to compare two numbers and although the code below works I have a feeling that it can be done in fewer lines. Is there a better way? Dim first, second, third, var As Integer Private Sub btnAdd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles b...more >>

Hi everyone, could someone give me some thoughts on the best way to manage mdi parent and child forms? in vb6 i could scroll through the forms collection and determine which forms were open/closed and their current state. now i can't. before i didn't have to declare numerous named instan...more >>

Sorry, but this ia another whine about VB.Net's lack of Control Arrays. I am new to VB.Net and I'm building an application that uses variable number of Label controls that are created at run time. The number of label controls will vary between 50 and 200. I have created an array of labels...more >>

i dont understand how to use `em all those @id ... what they have to do with a datagrid bound to a dataset filled by an adapter TIA ...more >>

Hi, Can any one tell me what to code to shut down a win2003 server given that i have all priveledges. Thanks MP ...more >>

I need to delete all of the contents in a datagrid before re-loading it. Please help Thanks....more >>

I'd like to define a wrapped SendMessage. Something like: function zz (TxtHandle as IntPtr, Msg1 as integer, Msg2 as Integer, Struct as Structure, StructSize as integer, StructType as ???) as integer Dim TmpStruc As IntPtr = Marshal.AllocHGlobal(StructSize) Marshal.StructureToPtr(Struct, T...more >>

I am tired of errors with New Bitmap(Filename) I already lost many day finding workarounds for this Is there any patch/service pack for framework 1.1 to correct what some name as memory leaks and others name as GDI+ bugs? ...more >>

I'm a newbie to VB.NET and ASP.NET (as you'll see by my code). However, I'm not able to get a simple process to work. I'm trying to retrieve a record and then check to see if the 'accountstat' column of the DB is set to 'inactive'. I can't, however, get it to compare correctly. Here's the code ...more >>

This seems like a simple one, ive searched the msdn and groups and cant come up with the answer however. I dont build gui apps very often (actually this is my first in oh 3 years) I have a form and a textbox When I put text in it and press enter I want it to DO SOMETHING, but I cant fin...more >>

Hi, I have a couple of datagrids that are based on dataviews. If I filter dataview1 I would like to automatically filter dataview2. I posted something about this before but I think I didn't specifically focus about that I was using dataviews and just datagrids. Ken Tucker was nice enou...more >>

Hey Group, I have a VB6 Project im trying to use with VB.Net, It lets me open it and the Upgrade Wizard Launches I click next Select EXE and Click Next Again, the it errors with: "Upgrade Failed: Exception Error Occurred: Invalid System Configuration (Unable to Locate Micorosoft.VisualBasic...more >>

I've written a Windows Service program that monitors a directory using the FileSystemWatcher class. The monitoring is done on it's own thread. Once a particular files gets added(created) to the directory, the program calls a routine using ThreadPool.QueueUserWorkItem(New WaitCallback(AddressOf mod...more >>

In code when I'm handling an exception, I'd like to be able to tell the debugger, if it's attached, to break and then navigate to where the exception was thrown, which won't be where I break. Is that possible? Bob ...more >>

I've never specifically written code to support asynchronous methods. I can't find any good examples on the web, so I was hoping someone here could point me in the right direction. TIA, Bob ...more >>

Hi, Here's my question first and then some information about what my problem is. Anyone know how or have a function/module/class/whatever to convert from argb to rgb? We have quite a few vb6 applications that are all called from another vb6 application called the navigator. It's kind of li...more >>

Hi cant use Auto update on my Vb.net and i also cant see the Online Resources page it says i am not online Canc Anyone Help me i just bought this programm and already starting to get pissed about it....more >>

I tried posting earlier and it never showed up.. I have a simple program to print a text file. I need to know how to change the page settings to landscape if it is not already in ladnscape mode. I do not want to use a dialog to do it and this appears the only way you can do it. I just need it t...more >>

Hello The strangest thing happened...I no longer can start up VS.NET from my startup menu, and I can't find the shortcut for it anywhere on my computer The only way I can start it is to double click a project that I've already made Any suggestions how to fix this Thanks ambe ...more >>

Hi, I need to create a vb.net windows program that allows users to create copies of an image when a button is clicked and then allow them to place the image on any point in the user interface. I am still trying to figure out how to do that (so any suggestions on how to do that would be welco...more >>

Hi I am trying to create a base class with the Protected keyword Protected MustInherit Class MyBaseClas .. .. End Clas And I got an error saying something like the Protected keyword cannot be used Anyone has any idea Thanks....more >>

I am attempting to get rid of the time alarm clock in my datagrid cell by using this in my Table Style: Dim TRDATE As New ClassDataGridFormat TRDATE.MappingName = "DATE" TRDATE.HeaderText = "DATE" TRDATE.Width = 100 TRDATE.Format = "d" But it does not respe...more >>

hello I getting problem in FileSystemWatcher , I had wrriten the code for the FileSystemWatcher , when i dropping the new file in the directory , the WatcherEdi_Created event get fired , but some time it not get fired. also this happens with muliple files dropping in same folder . the cou...more >>

[DllImport("user32.dll", CharSet=CharSet.Auto, SetLastError=true)]public static extern int SendMessage( IntPtr hWnd, [MarshalAs(UnmanagedType.U4)] int Msg, int wParam, IntPtr lParam); --snip SelectionFont.cbSize = Marshal.SizeOf(SelectionFont) SelectionFont.dwMask = Rtf.CFM_FACE D...more >>

I would like to start an 3rd oarty program from within my VB.NET and be able to kill the app in the same program. Almost liek creating a thread and just destroying the thread when I am done with it. Does anyone have a good place to start for someone that does not have any experience on threads. ...more >>

hi friends, I want to print an invoice with out open crystal report . what I mean to say that i want to give direct print print commad with out open crystal report .. pls anybody knows this one just help me ...more >>

I have been developing in VB6 for years. I am converting to VB.net. I was wondering if it is possible to create a System hook in VB.net. I know that I VB6, I could not, so I created one in C++. If it is possible, could you please provide an example. Thanks! Also, could you please provide goo...more >>

Hi, How do I trim double quotation mark " in a string? Or, how do I match pattern if the string has double quotation mark already like "string"? Thanks in advance. Hugh...more >>

Class MyClas Friend ReadOnly WithEvents MyObject as AnotherClas .. End Clas I have a VB.NET class that has a readonly object (i.e. It can only be assigned in the constructor). This enables me to safely expose it at friend scope without the possibility that it can be accidentally released ...more >>

Is there a way to use datasets in an Excel VBA macro? I currently use ADO but I have to make sure all the client PC's have ADO installed. Now that I'm switching all of my VB6 programs to .NET, I'd like to convert all my macros as well. Chuck....more >>

I have NOT yet made the transition from VB 6 to VB.NET 2003. I know some of the general differences, but I'm not yet to the point where I would feel comfortable starting a new project in .NET. At any rate, I was going to get some books and begin learning more about it and try to make the jump, but...more >>

Hello I have a datagrid with a datetimepicker column in it, which is bound to a dataset (MyDataset). The column in the dataset set that is mapped to the datetimepicker is called MyOrderDate and contains null values. I have tried to following to set the null values to 01/01/1900, as it do...more >>

Hi all, I'm just a newbie doing undergrad in Computing. I always face problems when it comes to looking for an appropriate method. Lately, I've been trying to write an application that listens to every single keystroke from the keyboard. I don't seem to be able to find the proper way to do th...more >>

Hi Anyone know a way I can (via .NET) query my dhcp server and enumerate all the scopes defined within? Been looking to no avail - it would appear a couple of guys asked this very question fairly recently and received no response. I hope this doesn't mean it's impossible ! I have the DHC...more >>

Hell I would like to use a seriazation to save one object at the moment and then another one... and antother one... And if I need read them all back. Is there a nice way to do it ? Beacause in all tutorials there are example how to save one object or arraylist of objects... But let's say this array...more >>

Hi, I have just been putting together a random number generator to practice with VB .NET. The Rnd command on its own works fine, however as soon as I add = 10 to the string I get a return value of false. If i use the string CStr(Int(Rnd() = 10)) I get a return value of 0. What am I doi...more >>

I have written a method that should modify the folder path passed to it into one that exists and is selected by the user. It then returns a boolean depending on whether a folder path was selected by the user It then dawned on me that I was passing in a readonly property into the method yet neither ...more >>

I want to sort a collection of objects, which has been read from an XML file. I also wish to be able to access the elements of my collection by key or index. Is there such a collection already that I can use? I have tried inheriting from SortedList, but the deserializer gets upset and says tha...more >>

Hi I have some crystal reports which worked fine in VS.NET 2002 but no longer work since I upgraded to VS.NET 2003. They all give the error 'Invalid Report Source'. Here is what I am doing:- ------------------------------------- Dim cnSQL As New OleDb.OleDbConnection(GetConnectionStrin...more >>

Hello!!! I have a form called "Main", which has a datagrid. Now what I want to do is to allow a user to select anyone of the rows on the datagrid (on the "Main" form) and then click a button to get another form which has a listbox with list of values. When a user clicks on anyone of the value...more >>