I've got a usercontrol derived from a normal ComboBox that contains some
special formatting code. On my main form I've got a lot of my custom
comboboxes.
I discovered a bug in the derived control and fixed it. But it still doesn't

hey all,
           if (DataReader["ParentId"].ToString() != String.Empty)
           {
               oCategory.ParentId = Convert.ToInt32(DataReader["ParentId"]);

I have an image which I'm trying to save using
my_image.Save(some_path, System.Drawing.Imaging.ImageFormat.Path);
and then I get the error "Parameter is not valid".
What could be the reason for this error? I know I can store it as a Png file.

Is there a way for particular (not the authorized person who is
running the network) to get access to
of all the IP address, hostname,MAC IDS and other user information of
all the clients on a particular by making a c# application.

Visual Studio 2003
I have a thread running a small timeout. Rather than defining my own
delegate I decided to be lazy and use a standard EventHandler delegate
When OnReadMessageTimeout is called, "sender" appears to points to the form

does anybody could tell me how can i do a 'simple c++ dll I compiled'
- calling
from my c# code (when I try adding this dll to references' it ays that
it should be com) ?

So I have a web form that accepts temperature readings...and sometimes
the reading is a round number (ex. 74), and other times its not (ex.
58.3).  I have the database setup to accept numeric(4,1), which shows
74.0 and 58.3 great, but I'd really like to only show the decimal

need to make application to view simultaneously, 4 mpg files, how can
i do that, if i want to view frame by frame this mpgs synchronous.

Is it possible to group by multiple Fields in LINQ? I want to do
something similiar to SQL command:
SELECT Count(*) FROM MyTable
GROUP BY Field1, Field2

I understand there is no "right" or "wrong" answer to the question posited
below. But I'd appreciate some feedback on the "best practice"
considerations - if there are any.
So here goes:

Hi - should the following compile? I ask because a Guid is a struct and can
never be null... The worst the compiler throws at me is an "unreachable
code" warning.
public string GetData(Guid id)

How to read  a Unicode data saved as ASCII in notepad file as txt ?
I tried using streamReader but it is not showing Unicode data.
eg.
using (StreamReader sr = new StreamReader(test.txt)

I'm trying to load a word document from my dataBase, and then open it for
modifying.
I succeeded to get the file from the dataBase, and open it by
double-clicking on it.

I am working with ASP .Net, C# and I am making an application where a user
can register his sport activities.
I need to let him choose one day and one activity from dropdown list that I
am already done with. I just need to know how I can do repeat a row in a

Hi Friends...
I have a simple query on building the Web Setup project.
When i build my setup, i see that the code behind the .aspx pages (.cs
code pages) are also included. And when i deploy the project i can see