I am adding data to my list<T>.  Som of my paramteres are "". When I try to
retreive them from the list I get a null exception error.  How can I handle
null?
Thanks

I want to judge an application is runing or not when another application
start .
If the application is running , get focus.
I use the Pinvoke to invoke the FindWindow function ,I declared  FindWindow

I'm rewriting a C++ TAPI app I wrote a while ago in C#. Everything
works fine for the first call.  Unfortunately, all subsequent calls are
completely ignored by TAPI until I restart the app again.
I remember running into this same problem with my original C++ code and

I'm retouching some utility classes used everywhere across our app, and
there are certain methods used everywhere and pretty frequently. I'm
changing them from instance methods to static ones, so to use them you
don't need to create an instance of that utility class.

How do i implement a typed IList class?
Visual Studio automatically generates template code for a IList, but for
example indexer is of type 'object', but i need it of type 'MyType'.
class MyList: IList

If you have a function that basically creates an object/struct that
holds data only in a function and wish to return the object/struct from
the function which is faster a class object or struct?
I would have thought class object since it can be passed back as an

Hi. I wanted to create a non rectangular form (Winamp, BSPlayer), and I
followed the instructions in MSDN on the topic. Created a bitmap, set
the background color of the bitmap to blue 0000ff, set the bitmap as my
form background, set the transarency parameter of the form to 0000ff,

As part of a refactoring iteration, I was looking at consolidating two
properties (Start and EndDate) to a single structure that would allow a
single access point for the "duration" (so to speak).
I considered using the TimeSpan, but that structure doesn't provide the

Happy holidays everyone!
I know this is off topic but this is a pretty sharp group...
Santa will be bringing me a new wide format monitor which
has lots of room to display windows side by side. The

What I'm trying to do is, to match all the countries in a list, except
US and CANADA which is (CA).
I tried a lot, but none of mine worked at all. I'm new to regular
expressins and I looks completely none sense for me. I need this for

I have a project where we have a windows service that creates a
remoting object for an external client application to communicate with
using ipc.  We've discovered the client is making updates to the class
fields by calling the update methods in the remoting object class and

Hello --
I've been struggling with this problem for over a day now.  I'd like to
know (without passing parameters) which class, and preferably, which
method of that class has called my function.

I have two threads and an event.  The first thread registers a callback
with the event.  That callback plays with variables that only the first
thread should touch.  The second thread triggers the event.  Is this
thread-safe?  If not, should I be doing thread synchronization

I want to have www.msdn.microsoft.com 's html code in a string ? What can i
do to have it?
Thanks.
Omer

Assume I have an n by n matrix of identical objects, each of which can both
invoke and consume event A. If, say, obect[1,2] invokes the event, the only
other objects that need to consume it are those in row 1 and those in column
2. Sending the notification to other objects would ...