Please how any I resolve this issue?
 
I am trying to modify my datalist view to have paging , I used the below code which I found on c-sharpconer, but I get error message when I click on the previous buttons, all other buttons work work.
The error message says:
Index -5 is either negative or above rows count. 
 
this is the aspx
  1. <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="PagininDataList.WebForm1" %>   
  2. "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">  
  3.    
  4. "http://www.w3.org/1999/xhtml">  
  5. "server">  
  6.       
  7.     "text/css">  
  8.         .style1  
  9.         {  
  10.             width: 672px;  
  11.         }  
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  15.     "form1" runat="server">  
  16.    
      
  17.     "height: 79px; width: 429px">  
  18.         "DataList1" runat="server">  
  19.           
  20.         

     Details 

      
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  25.         My Custom Datalist Template here  
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    39.   
  39.         "btnfirst" runat="server" Font-Bold="true" Text="<<" Height="31px"  
  40.                     Width="43px" onclick="btnfirst_Click" />
    		41.   
  41.             "btnprevious" runat="server" Font-Bold="true" Text="<" Height="31px"  
  42.                     Width="43px" onclick="btnprevious_Click" />
    		43.   
  43.                 "btnnext" runat="server" Font-Bold="true" Text=">" Height="31px"  
  44.                     Width="43px" onclick="btnnext_Click" />
    		45.   
  45.                     "btnlast" runat="server" Font-Bold="true" Text=">>" Height="31px"  
  46.                     Width="43px" onclick="btnlast_Click" />
    47.   
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    •  This is the C# Code