Exception before event handler is triggered

[Joachim]

Why do I get the exception
An unhandled exception of type 'System.NullReferenceException' occurred in
system.dll

Additional information: Object reference not set to an instance of an object.
before even getting to the first line of the event handler for my radio
button? I guess that all objects which are used in the call to the event
method is instantiated by VS. What could be wrong?

[Nicholas Paldino [.NET/C# MVP]]

Joachim,

Without seeing the code, it is nearly impossible to tell. However, the
error is well-defined.

When you debug your code, what happens?
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"Joachim" <Jo*****@discussions.microsoft.com> wrote in message
news:B6**********************************@microsof t.com...

Why do I get the exception
An unhandled exception of type 'System.NullReferenceException' occurred in
system.dll

Additional information: Object reference not set to an instance of an
object.
before even getting to the first line of the event handler for my radio
button? I guess that all objects which are used in the call to the event
method is instantiated by VS. What could be wrong?

[Joachim]

Hmm... I had set one of the radio button's Checked property to true, and
when I set it back to false everything worked. But what about if I want one
of the radio buttons to be checked initially then?

"Joachim" wrote:

Why do I get the exception
An unhandled exception of type 'System.NullReferenceException' occurred in
system.dll

Additional information: Object reference not set to an instance of an object.
before even getting to the first line of the event handler for my radio
button? I guess that all objects which are used in the call to the event
method is instantiated by VS. What could be wrong?

[Ignacio Machin \( .NET/ C# MVP \)]

Hi,

why don't you post some code,

also are you compiling in debug mode? that error seems pretty tense to be a
debug time error.

cheers,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation
"Joachim" <Jo*****@discussions.microsoft.com> wrote in message
news:B6**********************************@microsof t.com...

Why do I get the exception
An unhandled exception of type 'System.NullReferenceException' occurred in
system.dll

Additional information: Object reference not set to an instance of an
object.
before even getting to the first line of the event handler for my radio
button? I guess that all objects which are used in the call to the event
method is instantiated by VS. What could be wrong?