C# error "specified cast is not valid"

Hello Expert, I am getting an error when i try to do this
aDataSet = (DataSet) dataGrid1.DataSource;
Do you know why i would get specified cast is not valid i got it from
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemwindowsformsdatagridclassdatasourcetopic.asp so i am not sure why it would not work. Can you help me?
Thanks
jvoros1Asked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

dfiala13Commented:
Make sure the DataSource on the grid is not null.  If you are trying to make this call after a postback, the DataSource property will be null and you will not be able to cast.

0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
CallandorCommented:
The example shows
DataSet* myDataSet;
myDataSet = dynamic_cast<DataSet*> (dataGrid1->DataSource);

You want to cast a pointer to an object, not cast the actual object.
0
jvoros1Author Commented:
Thanks for you help I see my problem now my dataGrid.DataSource = aDataTable not a aDataSet
so i changed it to aDataTable = (DataTable) dataGrid1.DataSource;
And it works great :)
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
C#

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.