Hi, what's happened to my project: each time I try to change any property of
a control, I get an error message: "Invalid property value" and in details:
"Object reference not set to an instance of an object. "
Could it happened after I'd moved the project to a different location?

In a C++ class library project, the following code:
public __gc class A
{
public:

I have a smartphone which is basically windows mobile and has Window
CE. I want to play mp3 song file on smartphone which is very crusical
part of my project. I am able to play any .wav file but fail to play
mp3.

I want to know how to view web forms i wrote with ASP.NET in notepad on my IE
web browser, do I need to send them to a web server?

[Using C# .Net 1.1]
I need to update the PATH environment variable for the lifetime of my .Net
process only - I'm pinvoking my own C++ dlls and they are not always in the
same dir as my .Net app. [ I dont want to update the Windows PATH environment

I always worked on VS 6.0 where there is a Feature Called Object
Browsing/Find Symbol and shortcut to that was ALT-F12. Now in Visual
studio.net I am searching for the same thing.
The feature in VS 6.0 contains of Definition and references, File Outline,

I need a way of deriving the IP address of the local machine (i.e. the
one running the process) without using the Dns class, since I cannot
guarantee the presence of a DNS in the final application. Any ideas?
Many thanks in advance for any help.

My question is simple, why should I, as a freelance developer, spend good
time producing client/server software and libraries in .net when any stupid
monkey can extract all of my source using Salamander? And what's more, for
those that don't get Salamander, what is the point of ...

Does someone know the location, from which I can download something like
TreeList control (multicolumn TreeView), freeware of course.
Thanks in advance,
Jan

I have a windows forms application in C# that uses MAPI
and Outlook.application object for automatic send and it
works fine with Microsoft Outlook.
Outlook.Application oApp = new Outlook.Application();

What: Trying to debug any project in VS2003, getting the error: Error while
trying to run project: Unable to start debugging. Access is denied..blah blah
I'm running XP svc pack 2. I have .NET framework 1.0 and 1.1 installed. I
HAD 2.0 installed but have un-installed it.

I have 2x Front-end Web servers (Win2003 Ent IIS6.0), setup with NLB (single
Affinity, also using SQLServer session state) that are hosting a few .NET ASP
web applications under the Default Website in IIS, and accessing via a
Intranet LAN (this is not publicly available).

I get the following error when trying to launch the .NET Framework 1.1
Configuration Snap-in:
   Snap-in failed to initialize.
       Name:.Net Framework 1.1 Configuration

 I'm developing my first real object-oriented project, and having some
trouble...
 Simple scenario:
 DB

How can I update a row in a datatable?
My datatable has 1000 rows so a scan may take too long.