分頁顯示DataGrid

這是我在工作中遇到過的。可能大家覺得很簡單，但我還是發表出來。大家如果有什麼更好的方法，請給我留言。

private void BindGrid()
  {
   string str = "select * from toplist where [type] = 5";
   DataTable dt=Kubao.CommonPrj.DBA.SQL.LoadDataTable(Kubao.cls_ClassLib.Conn_Mov,str);
   DataView dataview = new DataView();
   dataview=dt.DefaultView;
   DataGrid1.DataSource = dt.DefaultView;
   DataGrid1.DataBind();
  
   string cPage;
   int pageSize = 2;
   int currentPage;
   int pageCount;
   int numResults = 0;

   if (Request.QueryString["page"]==null)
   {
    cPage="1";
   }
   else
   {
    cPage=Request.QueryString["page"].ToString();
   }
   try
   {
    currentPage = Int32.Parse(cPage);
   }
   catch
   {
    currentPage = 1;
   }

   numResults = 0;
   int start = (int)((currentPage - 1) * pageSize);
   int to = (int)(currentPage * pageSize);
   if (start <= 0) start = 0;

   numResults = dataview.Count;
   int a1=0;
   pageCount = Math.DivRem(numResults,pageSize,out a1);
   if (a1>0)
   {
    pageCount++;
   }
   if(currentPage>pageCount || currentPage<=0)
   {
    currentPage = 1;
   }
   if(currentPage==pageCount)
   {
    to = dataview.Count;
   }
  
   // Create one DataTable with one column.
   DataTable myTable = new DataTable("myTable");
   myTable = dataview.Table.Clone();
   //add row
   DataRow NewRow;
   for(int i=start;i<numResults;i++)
   {
    if(i<to)
    {
     NewRow = myTable.NewRow();
     for(int k=0;k<dataview.Table.Columns.Count;k++)
     {
      NewRow[k] = dataview.Table.Rows[i][k];
     }
     myTable.Rows.Add(NewRow);
    }
   }
   myTable.AcceptChanges();

   DataView resultDataview = new DataView(myTable);
   DataGrid1.DataSource = resultDataview;
   DataGrid1.DataBind();

   //生成頁導航條
   string strNav = "";
   int endpage;
   if (currentPage>1)
   {
    strNav += "<a href='?page="+ (currentPage-1).ToString() +"'>上一頁</a>  ";
   }
   if (currentPage>11)
   {
    strNav += "<a href='?page=1'>1</a> ...";
   }
   if(pageCount>currentPage+10)
   {
    endpage = currentPage+10;
   }
   else
   {
    endpage = pageCount;
   }
   for (int i=currentPage-10;i<endpage+1;i++)
   {
    if(i>=1)
    {
     if (i==currentPage)
     {
      strNav +="<font color=#990000><strong>"+ i.ToString() +"</strong></font> ";
     }
     else
     {
      strNav += "<a href='?page="+ i.ToString() +"'>"+ i.ToString() +"</a> ";
     }
    }
   }
   if((currentPage+10)<pageCount)
   {
    strNav += "... <a href='?page="+ pageCount.ToString() +"'>"+ pageCount.ToString() +"</a>";
   }
   if(currentPage<pageCount)
   {
    strNav += " <a href='?page="+ (currentPage+1).ToString() +"'>下一頁</a>  ";
   }

   Literal1.Text = strNav;  
   Literal2.Text = "共 "+ numResults.ToString() +" 條供應信息，當前顯示第 "+
    (start+1).ToString() +" - "+ to.ToString()  +" 條，共 "+ pageCount.ToString() +" 頁";
  }