I have a piece of code that looks like this:
           XPathNavigator l_nav =
xml_document.DocumentElement.CreateNavigator();
           XslCompiledTransform l_xslt = new XslCompiledTransform();

I have an ObjectDataSource that returns instances of an interface. The
Select works as expected, but after editing the UI (web) and trying to
save the object I get the following error:
[MissingMethodException: Cannot create an instance of an interface.]

is there anything in VC can do the job like Reflection in .NET?
i mean by setting some attribute and get runtime information?

I have to generate a fixed length text file.I have a file formats like
fields details as well as its length and  position.what actually i have to do
that i will get the data from the databas and then i need to create a fixed
length flat file as per format.so please give me a ...

Object garbage collection of events
I can not help wondering how the garbage collection system handles
events.
If I release all references to an object that has a void that an event

Im wondering if there are any cryptoalgorithms (like Rijndael, AES,
TripleDES) which support CipherMode.CTS... All the ones ive tried it
on (Rijndael, AES, TripleDES, DES) just give me an error saying its
not supported for this algorithm...

i am devloping a  application
which is linked through WAN
what are  pr-requisites ?
how should i connect to sql server

When a class (type) is derived from another class(type) such that it inherits all the members of the base type it is Implementation Inheritance.
When a type (class or a struct) inherits only the signatures of the functions from another type it is Interface Inheritance.
In general ...

I have a form that has 2 sets of radiobuttons.  As it happens I created 1
radiobutton and then copied it a pasted it 4 times.
I have 4 radiobuttons split up into 2 groupboxes (2 radiobuttons each).
When I first start the program none of the radiobuttons are checked.

Given this:
           SqlDataAdapter sqlAd = new SqlDataAdapter(sql, sqlCon);
           sqlAd.Fill(ds);
I find that the data types that are created are not what I want...

Suppose there is the following class structure.
class S {...}
class A : S {...}
class B : S {...}

I asked this before in a different discussion group without luck. Perhaps
someone here can help me. What I need to do is change the Z order of all
adorners in a Canvas. What I have is many UserControls in a Canvas. Each has
an adorner. When I change the Z-order of the user ...

I m trying to serialize the object of the serializable class DsExportDatabase.
But  
 XmlSerializer serializer = new XmlSerializer(typeof(DsExportDatabase));
This line throws me exception that "There was an error reflecting type "

I have implemented a printing scenario where an html file is
printed using the the following code:
public void PrintHtmlFile(string url)
       {

Is there a better way (faster, cleaner) of checking for a null than
the below?  I tried various other ways (commented out) and they give
run-time errors.
treeView1.Node[999] does not exist, it's a null.