Gridview and datalist related query

Any effort? Did you look at the documentation? It's quite apparent.

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.datalist.repeatcolumns(v=vs.110).aspx[^]

http://msdn.microsoft.com/en-us/library/ms972960.aspx[^]

Look further at these articles for understanding:

http://www.aspsnippets.com/Articles/Implement-Paging-in-DataList-control-in-ASPNet.aspx[^]

Implementing Efficient Data Paging with the Datalist Control in ASP.NET 2.0[^]