I have to installa a Windows service on a machine which has only the
fw1.1 installed.  I did the following:
- Create a WindowsService application (using the VisualStudio template);
- Create the ServiceInstaller;

Here is the SqlDataSource in my aspx file
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$
ConnectionStrings:ETCServiceTestConnectionStringA %>"
      SelectCommand="SELECT [TestNo], [AcceptDate], [status] FROM

Excuse for my English. I need to know which processes are attached to
a file;
for example if I open a txt file with notepad.exe, this process is
attached to this file.

I use the following code send mail in my C# application. It works, but
it does not send mail immediatly. If I quit my application, then the
mail gets send. I can see Norton scan my mail ..etc. What do I need to
do so that tye mail gets send right away, before I quit my program ?

I need to configure the provider to use a database in SQL Server
instead of the SQL Express database default, but the admin tool does
not give any options to change the database. Does anyone know how to
change this configuration?

I want to define some metadata using custom attributes to apply to
properties in various classes.
The properties return values that are classes themselves.
I want to retrieve the attribute information in the classes from which the

Would anyone mind telling me the difference between Array.Clone and
Array.CopyTo?  I was asked this during an interview and got partial
credit for saying they were basically the same because they create
shallow copies.  I ran ILDasm on Array and saw that they do the copy

"A "long" in C is an "int" in C#."
Does this mean that whenever passing a parameter to a C function which
expects a long type, the variable on C# side should be declared as int type?
What if in the following case, should the parameter "level" be type of int

Let's say I do this:
MyObject o = new MyObject (this, DoWork);
... where DoThis is a function in the calling class.  How do I pick
this up in the constructor, MyObject?

I've read many articles including the one from Duff's blog but I've many
doubts.
public static myClass Instance
{

Hi, i would like to remove a number of characters from my string (\t
\r \n which are throughout the string), i know regex can do this but i
have no idea how. Any pointers much appreciated.
Chris

A couple of days ago I was debating about whether to use C++/CLI or C#
2005's PInvoke in order to tie in my VS 2005 app with a legacy
csta32.dll file. So far I have tried to call one method out of the
csta32.dll and wind up with the PInvoke stack imbalance error. Here

I feel like an idiot asking this but here goes: I understand the 'concept'
of scope and passing data by value and/or by reference but I am confused on
some specifics.
class example{

The usual trick to get around the "collection was modified" problem by
looping through the collection backwards by index won't work with a
Hashtable because there is no way to access by index, right?  How do I loop
through a Hashtable to selectively remove items?

What's the technical reason for not allowing structs to be
hierarchical? WPF has a nice Point3D struct. I wanted to add some
additional constructors to it for converting from my data types.