There was am error loading types from assembly 'D:\sample\Bin\Telerik.Web.UI.dll' 'could not load
file or assembly 'Telerik,charting,Version=1.6.0.0, Culture=neutral,PublickeyToken=d14f3dcc8e3e8763'
or one of its dependencies.The system cannot find the file specified.'
Sounds to me like either there is an issue with the controls not being in the Bin or References (depending on what kind of application this is) folders of your project, or there is an issue with the GAC of your machine. The first case is pretty easy to check for - make sure that Telerik.Web.UI is in the Bin or References folder. As for the second possibility you can simply follow the guidelines offered in this documentation article to make sure that all of the assemblies are properly referenced in the GAC.