What is the difference between attribute and preprocessor directives

(IT is saying the Operator '=' is not defined for types
'System.Drawing.Color' and 'System.Drawing.Color'.
(btnface is a color)
If btnFace = Color.White OrElse btnFace = Color.Black Then

Directory.Delete() works fine untill there is some read only file. Should I
write a functions that changes all file attributes to FileAttributes.Normal
or is there a better way of doing it?
I just want to be able to delete all files regardless their attribute.

I want to ask about the png compression for Bitmap.Save
Here are the case :
Jpg (768 x 576 , 301KB) => Jpg (384 x 288, 22KB)
Jpg (768 x 576 , 301KB) => Png (384 x 288, 311KB)

I have problems with executing my application in Win98. I get an error
StackOverflowException in many unexpected moments. In Win2000 and WinXP it
works well. What to do?
Regards

I am using the System.Web.Mail.MailMessage class to generate and send email
messages from my asp.net web app. I assumed that this was some simple
interface to send mail using SMTP, but in the documentation for the "To"
property it says:

I've got a very weird problem, when I run the following code the
ComboBox (Me.cmbInputDevice) is always empty. The ComboBox is on a
UserControl in a Class Library. I'm using VS.NET 2003 with SourceSafe
6.0d (the problem occurs whether the code is checked in or out)

I cannot reverse-engineer a simple C# program to UML (or any other program
for that matter). It seems to go through the motions of processing the code
but then the following message appears in VS .Net Academic 2003:
"Reverse engineering failed.

We have a component in .net which contains encryption and decryption
algorithms. (We cannot use standard ones because these are going to be the
same as already existing algorithms in another application.) Of course,
these algorithms are pretty worthless if it is possible to simply ...

I have .dll with Form and ImageList component,
when I'm making instance, I got execption:
An unhandled exception of type 'System.Reflection.TargetInvocationException'
occurred in mscorlib.dll

I have some problem, and have no clue how to resolve it.
I wrote some C# application which shows nice GUI and then creates
long-running worker thread. I want now to recaive some kind of notify, when
the worker thread is terminated (or aborted). I've been trying delegates and

Does anyone know how to modify the default Stored Procedure template the
exists in a VS.NET database project?  I know how to with Enterprise Manager,
but need the same functionality in VS.NET.
Thanks,

I have a class that streams an image from a DB.  If there is no image
(record then I want the class to stream a default image.
Why is this not working?  It is breaking on the line of code within
the for..loop.  Any help would be greatly appreciated.

i'm looking for a method to list all asp.net sites that are hosted by a IIS
server using C# language.
Any idea ?
Thx,

The following code
Type t = Type.GetType("System.Drawing.RotateFlipType", True);
always throws an exception:
An unhandled exception of type 'System.TypeLoadException' occurred in