custom paging in repeater control with out using pagedatasource in c#.net?

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C#

ASP.NET

i want to implement custom paging(first,next,previous,last)with out link buttons and without using pagedatasource in repeater control in c#.net?

pls see the below link....

http://www.aspsnippets.com/Articles/Custom-Paging-in-ASP.Net-GridView-using-SQL-Server-Stored-Procedure.aspx

from the above link they are using populatepager function pls modify that function by adding next and previous logic ...pls help me out...

private void PopulatePager(int recordCount, int currentPage)
{
    double dblPageCount = (double)((decimal)recordCount / decimal.Parse(ddlPageSize.SelectedValue));
    int pageCount = (int)Math.Ceiling(dblPageCount);
    List<ListItem> pages = new List<ListItem>();
    if (pageCount > 0)
    {
        pages.Add(new ListItem("First", "1", currentPage > 1));
        for (int i = 1; i <= pageCount; i++)
        {
            pages.Add(new ListItem(i.ToString(), i.ToString(), i != currentPage));
        }
        pages.Add(new ListItem("Last", pageCount.ToString(), currentPage < pageCount));
    }
    rptPager.DataSource = pages;
    rptPager.DataBind();
}

i modified my code in below format with page size "5"...my next and previous logic is not working

private void PopulatePager(int recordCount, int currentPage)
      {

          double dblPageCount = (double)((decimal)recordCount / PageSize);
          int pageCount = (int)Math.Ceiling(dblPageCount);
          if (pageCount > 1)
          {


              findex = currentPage - 5;


              //Set Last index value if current page less than 5 then last index added "5" values to the Current page else it set "10" for last page number
              if (currentPage > 5)
              {
                  //lindex = currentPage + 4;
                  //findex = lindex - 5;
                  lindex = currentPage + 4;
                  findex = currentPage;
              }
              else
              {
                  lindex = 5;
              }

              //Check last page is greater than total page then reduced it to total no. of page is last index
              if (lindex > pageCount)
              {
                  lindex = pageCount;
                  //findex = currentPageIndex;
                  findex = lindex - 1;
              }

              if (findex <= 0)
              {
                  findex = 1;
              }

              List<ListItem> pages = new List<ListItem>();
              if (pageCount > 1)
              {
                  pages.Add(new ListItem("First", "1", currentPage > 1));
                  if (findex > 1)
                  {
                      int index = findex - 1;
                      pages.Add(new ListItem("..", index.ToString(), true));
                  }
                  else
                  {
                      pages.Add(new ListItem("..", findex.ToString(), false));
                  }
                  for (int i = findex; i <= lindex; i++)
                  {

                    pages.Add(new ListItem(i.ToString(), i.ToString(), i != currentPage));


                  }

                  if (lindex >= 5 & lindex < pageCount)
                  {
                      lindex = lindex + 1;
                      pages.Add(new ListItem("..", lindex.ToString(), true));
                  }
                  else
                  {
                      pages.Add(new ListItem("..", lindex.ToString(), false));
                  }
                  pages.Add(new ListItem("Last", pageCount.ToString(), currentPage < pageCount));
              }
              rptPager.DataSource = pages;
              rptPager.DataBind();
          }



      }

pls change accordingly in above code with previous and next logic..