How can I validate whether a given file is a .Net Assembly / Com-ActiveX
binary / Other ? Is it possible without opening the file twice, or even once ?

On form load my datagrid gets populated with values from database table. How
can I reset values in my DataGrid to 0 on click of a button?
thanks

I have a project with some hundreds of web forms and they're all in
one project so they are in only one DLL.. Should i seperate the user
interfaces, to different dlls; what is the recommended way ?

Hey NG.
Using .NET remoting it's possible to "override" the <c>new</c> operator
to return a proxy to the object in question.
I'd like to use this approach to let a factory class return the

I have a problem I am trying to open window form from asp .net web
application. I am using linkbutton, by clicking this should open a
window form. I don't get any errors, but a window form won't come up.
Please help anybody.

Greetings microsoft.public.dotnet.general,
Here is my problem: my boss wants to create a PDF file for our clients
that they can open (without entering a password) that cannot be viewed
or modified programmatically. This file may be passed on to our

How do you get the current directory of the actual .exe file (not the file
name but the directory it is in) ?
These do not work:
System.IO.Directory.GetCurrentDirectory() - returns system directory not

In VB, when using the form:
MessageBox.Show("some text")
The result is a small blank dialog with a blank button.
If I specify the full set of parameters for the MessageBox.Show using the

Can anyone point me in the direction of some code that allows for
handling two video cards. I want to have a program (vb.net) that
allows for two outputs, one screen will be the my program where I can
choose what is to be shown on the 2nd display.

How can i do this in regular expressions:
I want a two digit value that is between 01 and 99.
Since 00 does not match I can't just do two digits. I need some kind of rule
that says if first digit is 0 then second digit cannot be 0.

This should be easy but I am brand new to regular expressions so hopefully
someone can help me. I want to do some simple field level validation in my
app and I can do a simple test to see if the value entered in a textbox
matches a value I am expecting -

I'm having some troubles with a .NET application.
I have a MDI-parent form and MDI-child forms. When I press a shortcut key
in a MDI-child form (i.e. <ALT> + <D>) I get the following error:
An unhandled exception of type 'System.NullReferenceException' occurred in

Classes:
-A
-AB
If AB inherits A, then is it correct you cannot do the following:

Hello group,
                The datagrid I use needs to add a hidden column on demand
(only on certain conditions). The sequence of events would be as below:
                   1) get the dataset(ds) and bind the datagrid(dg) with

I am writing an application in VB.NET to calculate the first 1000 prime
numbers.
The issue is the performance.....I want the time taken to be minimum !
I can achieve this in around 15 milliseconds now.