I need a way to do the following and cannot seem to find a solution via
google.
1. Have a method from the main app to get all open forms
2. Check each open form for a public method

Hello friends,
I would like to know what is the best way to store a tree structure in
c#? Are there any good implementation examples for seing how to do it?
Thank u!

I am not sure where to start on this.
Does someone have a code snippet which will wait for a keypress  or
combination keypress & give me its utf8 value?
e.g

I am trying to develop a webservice and an aspx client on a Win2003
server box. The IDE is VS2008.
The thing just seems totally flaky.
Webservice compiles and publishes with no errors.

Firstly let me be very clear about this, I do not want to create a web
service proxy nor do I want to do anything with web services.
Basically, I have a shrink wrapped desktop application which downloads
data from a web site. Unfortunately the application has a fixed

What would be the most efficient matrix representation for linear algebra
on .NET?
I recently benchmarked a 2D array, a flat array and an array of arrays and
got the following performance results for LU decomposition:

I'm working on a project that deals with some algebra.  Or, actually,
just math in general.  It could eventually work it's way up to more
advanced math, analytics, etc.
Anyway, I'm looking for ideas on how to store the actual formulas

What is the way to have best performance to copy a byte[] to a value such as
long?
I use
BitConverter.ToInt64(binary, offset)

Using C# 3.5 I want to select a value from an XML file.  The intent of the
following is to print "EpsilonGamma".  It does not work.  Can you point out
my probably very obvious error?
XmlDocument document = new XmlDocument();

I've got a full day invested in this now and I still can't make it work.
 Hopefully someone here can offer some suggestions.
Here is the situation:  I have a data entry application and am using a
DataGridView to enter order details.  When it comes to the serial

I have a list of company names (say, IBM, Corning, General Motors, and
another 5,000 of them).
If I take a body of text, a news article, for instance, and I want to
see which company names appear in that text, is there an efficient way

I know I'm some years behind, but I just have the go-ahead to start
developing on .Net 2.0. While the development process goes ahead, I'm
to maintain the .Net 1.1 stuff on the same machine.
I downloaded and installed the 2.0 framework. As I understand it, 1.1

Is there any way to stop an XmlDocument object from using data grabbed
from a previous request?
e.g. if I used XmlDocument.Load to grab a URI, and I know that this
URI changes often (for example, an RSS feed) can I somehow tell the

Hi Experts:
I saw an PC without keyboard attached, it uses an on-screen keyboard
software program. When user clicks on a "key" (a button) on the program, the
program can find the currently active (focused) window application (for

Thanks in advance for everyone's help...
My problem is that more often than I would like, I get attachments
that for some reason or another do not include an extension. What I
want to do is create a C# app that based on a file on my hard drive