I have a Report.
I need to create another one, similar to the one I have. So I created a second report by copying the first one.
Then I created a new DataSet for the new report. I created it also by copying the original dataset (from the first report), and changing the name.
Now, when I want to add the new DataSet in the new Report, it doesn’t appear in DataSet option in “new Dataset..”

What am I missing? Why can’t I see the DataSet that I’ve created?
Finally I solve this. The problem was that when I copied the DataSet, I changed the name of the new one, but in the code behind, the name didn’t change. So, I open the DataSet with XML Editor, edit Name, save, re-compile, and it appeared!