I have in a small application a usercontrol with 4 buttons. Btn1, Btn2, Btn3
and Btn4 these button is placed at the buttom of the usercontrol. On top of
the usercontrol i place an anothe usercontrol depends on the buttons i click
on. A little bit like the Outlook Side navigator.

I've tried hunting for this in the C# specs but can't find the relevant
info. Does anyone know what the official rule says (or doesn't say) about
removing an event more than once. If you apply "+=" to assign an event for
instance, can you safely apply "-=" more than once or is ...

I am working on a trading application server, normally 25-30 clients
connect to server in a time. And server continuously sending trading
data to clients.
I want to restrict server that, it should not send over 4KB/sec data

I have a couple of classes I use. They both work. The problem is if there is
a bunch of messages, while they are being downloaded nothing else works
(other threads or GUI controls).
I've put the pop3 reader in a background thread. I've made it lowest

I know there are a bunch of existing posts on the topic of book
reccomendations, but I wondered, those of you currently taking a
college C# course, what book is the textbook you were required to get?
Tony!

Greetings group,
I have a situation where I'd like to visibly see disabled dates on a
DateTimePicker. Frequently the Min and Max dates in the picker will be
set only to days apart, and so I would like this to be reflected in a

My  understanding is that char stores a fixed number of characters even if
the string stored in the char has fewer characters, whereas varchar stores
the string with the number of characters that the string contains.
So, varchar sounds more efficient, but are there any ...

Please anybody explain me (C#):
1. Why default constructors of structure types cannot be defined?
2. Why finalize method cannot be overrided in structure types?
3. Why structure type cannot be used as a base type?

I have an enum based on a lookup table in my database.  However, when a new
item is added to the lookup table or one is removed, I have to modify the
enum to match.  Is there a way to dynamically load the enum when the class
is instantiated? I was thinking a stored procedure to ...

Hi, im writing a program that uses the multicast address to send data to
multiple clients at the same time. I would like to be able to get the
multicast address of the current network programmatically...is this possible,
and if yes, how? ive done google searches, yet i havent ...

I've implemented the ICloneable interface on a class of mine. I've
implemented it in two different ways both of which I feel should work
correctly, but only one does and I'd be curious to know why.
Working:

I have a to create a com object from a dotnet class. Now I have the
following questions :
- with Queryinterface you can get all the interfaces from a com app. How can
I expose my dotnet classes with Queryinterface.

I am trying to instantiate a new class using
Activator.CreateInstance(). The class is actually a window's form.
When the process executes the CreateInstance() method it generates an
exception. The exception states that it could not find an assembly.

I'm looking at practical string lengths and the capacity of a text
box.  I'm using a string to progressively add the status of a process
periodically and dumping that text into a text box.  I don't mind
trimming the first x number of lines from the string when it reaches

How can I add a handler to the closing of a windows form if the user
selects the 'X' in the upper right hand corner of a form? Basically
I'd like to make sure that certain text boxes are filled in before the
form can be closed. I haven't had the need for handlers untill now so