When I create an empty SharePoint 2010 project with Visual Studio 2010, a lot of controls are disabled (chart, sqlDatasource). I try to reinitialize and other stuff but nothing. The controls are disabled.
How can I develop a webpart without controls?
The issue is that the .NET Framework built-in charting is only available starting with .NET 4 - but SharePoint 2010 solutions are based on .NET Framework 3.5 - therefore the SharePoint VS solution properties target framework is set to 3.5 - therefore you cannot select this library.
Only option you have is to download and utilize MSChart control.
You can also check:
