Split excel sheet in to 2 sheets

Question

Hi,


   I was tring to split the excel sheet in to 3. 1st one is original sheet. second one is sheet which is vertical split with first 15 columns of original sheet and
   last is the sheet from 16th column.

   For this I was using Aspose.net, .net 4.0, C#.

   I was unable to achieve it. Please help me in finding a solution.