I have an interface which has a bunch of methods defined that all the
inheriting classes will have to implement.
How can I force the inheriting classes to have a class attribute?
Something like this (except it does not compile)

Asynchronous method model generally has a callback delegate as
argument. The delegate will be called when some WaitHandle is set or
time out. And, one more argument is used as state object to transfer
any customized data into callback delegate. I believe that is un-

We're trying to diplay a message on the screen, and we want it to be always
there, regardless of whether a new application is run, which may occupy that
portion of the screen.
Put another way, I want a text (or other types of graphics) to be always

I have written a windows service to watch a folder for newly created
documents.  Works fine when watching directories on my local machine, but
always get a "directory invalid" error when I either try to watch a UNC path
or mapped drive.  

after setting another image to the picture box it is not possible to
delete the last shown file via File.Delete ( sFilename). Path of image
file is correct. Error message box says: file is being used by other
process.

I hvae three thread and a thread that is used to show a winform.
   The code:
     Thread ThreadDialog= new Thread (new ThreadStart (ShowDialog));
//Show a winform Dialog

i am looking for an easy way to do a "RemoveAll(Predicate<T> match)" for
a SortedList like it is possible for a List.
My first question is:
Why is the  Method not available for the SortedList.

I've read a few posts on the stored procedure vs dynamic sql debate.  I ran
a few performance test for myself and it appears to be a wash.
Given that, I'm leaning toward dynamic sql mostly because it would mean one
fewer place to have things.

 I have arrays below:
arr1 = { a, b, c}
arr2 = {1, 2, 3}
arr3 = {x, y, z}

I'm trying to call a generic method by providing the T parameter at runtime,
as opposed to compile time (i.e. by specifying the T parameter in the method
call). I was under the impression that the CLR was able to infer the T type
dynamically - perhaps I was wrong or simply ...

I want to know if the Framework 3.0 has support for Tibco or can I just
reference the Tibco library and use it as if I was writing the code in C#.
Also I have a FIX object, can I use this within Framework 3.0 as well.
Finally how does Framework 3.0 run the workflow task. For ...

In C# 2003, is there a way to phrase a property block so that the getter is
public and the setter is internal?
How about in 2005?

I want to place a button on a form so the user can reverse data entry
changes to an existing record.  Does anyone have any ideas on how to
code this.  The form has 2 datagridviews on it as well.
Thanks in advance,

 I have to find an object of Employee (Say 'Empl') in a list of
objects of Employees (EmployeeList). The object Empl inturn has a list
of objects  (say List of Children objects ) in it.
 I have used Find method with predicate as follows,

I've got the following umanaged code that I need to handle in C# code.  The
data I read comes from an external device, by Read(ID, &data, REGLEN);
How should the code look for the structs in  C# to handle "PULONG Value" in
the function call and the "PktArray[0].pbyBuf = ...