代码实现：

前台（webform1.aspx）：

<%#getcount()%>

后台（webform1.aspx.cs）：

int count;

private void page_load(object sender, system.eventargs e)

{

     if(!ispostback)

     {

sqlconnection cnn = new sqlconnection();

cnn.connectionstring = "data source=localhost;initial catalog=northwind;password=;"

         +"persist security info=true;user id=sa;workstation id=apj062;packet size=4096";

          string sqlstr = "select top 10 customerid, companyname, city, address from customers";

         cnn.open();

         sqldataadapter ad = new sqldataadapter(sqlstr,cnn);

         datatable dt = new datatable();

         ad.fill(dt);

grdcustomer.datasource = dt;

         grdcustomer.databind();

     }

//自动记数函数，在前台调用

public int getcount()

{

     return ++count ;

}