i've used a  filedialog ox on my winform...
I want the system to pop up a message when the user doens't selects any
file...
how can i do this validation...any help

Programming with VB Express:
Need help with code to be able to move mouse to a position on a form
ex...341,22 to 553,148. Then when I do a left mouse click, it hides the
current form and goes to a new form.

I selected and changed personal writing to a font called Bookshelf Symbol 7
for privacy reasons. Now when I try to change it back to the original font it
only shows me small squares instead of letters. Can anyone help? It's very
precious infomation to me! I"m using Microsoft ...

Can anyone explain the following (very) simple scenario.
1) I make an exact copy of my "DataSet" and delete one record from a given
table (in the copy)
2) I invoke "DataSet.GetChanges()" on the above copy and pass the results to

If I have a third party precompiled DLL file, how can I know which
version of the .netframe work it will work with. Is there any tools I
can check the DLL file?

I did my initial search on this to get done, and now hoping that
someone will come up and hel me.
Scenario is:
When I execute my application it opens the Shell(Windows Form), which

Is is possible to replace a framework class for my application?
Let's say that I want to add a new property to the System.Data.Dataset
class. I can do that by extending the class. But I also want my new class to
replace the default System.Data.Dataset class in the framework. ...

I need to get the full signature of a delagate in a string.  Is this
possible?
In a control I have:
  public delegate void Button_Click(object sender, EventArgs e);

i want to develop a web-based time sheet application in asp.net. we
haev a licensed windows server 2003 running on our system but can
someone plz tell me if there will be licnesing cost of using asp.net
for development in pakistan

I've noticed that simple .NET code to create directories does not seem to
work on Vista.
Take the following simple example (implemented in a Windows forms
application):

I have a situation where I want to generate code (whether C# or IL I don't
know which is easier or whether C# is slower because needs to be converted to
IL at the end).
I have a dynamic SQL string, say:

I'm being passed a string that has been encrypted using 3DES.  I'm writing a
function to decrypt that string.
All is well except I get garbarage before the decrypted string I'm supposed
to be retrieving.

I'm writing an application which use APM.
For example:
class Program
   {

I have written a DLL to give to a customer that he can use to search a
database and bring back some results.  When he calls my search function,
once the search is performed a windows form is opened up with the results.
This functionality works fine if called from a windows form ...

When I want to update a record folowing exception has been appeared:
Concurrency violation: the UpdateCommand affected 0 of the expected 1 records
Can anyone help me about the cause of the exception?
regards