Hi Bhumi,
Check out the following topic in the online docs:
http://helpdotnetvision.nevron.com/ThinWeb_Chart_ServerSettings.html
You can set the ShowLoaderImagesForAxisTiles and ShowLoaderImagesForPlotTiles properties if you want the control to show loaders for the respective tiles.
NThinChartControl1.ServerSettings.ShowLoaderImagesForAxisTiles = true;
NThinChartControl1.ServerSettings.ShowLoaderImagesForPlotTiles = true;
Best Regards,
Nevron Support Team