曾经在点击行打开一个页面   在RowDataBound 事件中对每行加js  比如：onclick=open(id) 什么的。

用gridview属性Rows.Count取值   比如

for (int i = 0; i < gvdata.Rows.Count; i++)  
            {               
                addxipurchbilling.Goods_id = Convert.ToInt32(gvdata.Rows[i].Cells[0].Text.ToString());
                addxipurchbilling.Goods_name = gvdata.Rows[i].Cells[1].Text.ToString();
                addxipurchbilling.Specifications = gvdata.Rows[i].Cells[2].Text.ToString();
                addxipurchbilling.Units_of_measurement = gvdata.Rows[i].Cells[3].Text.ToString();
                addxipurchbilling.PurchBilling_number = Convert.ToInt32(gvdata.Rows[i].Cells[4].Text.ToString());
                addxipurchbilling.PurchBilling_unitprice = Convert.ToDecimal(gvdata.Rows[i].Cells[5].Text.ToString());
                addxipurchbilling.PurchBilling_price = Convert.ToDecimal(gvdata.Rows[i].Cells[6].Text.ToString());
                addxipurchbilling.Goods_barcode = gvdata.Rows[i].Cells[7].Text.ToString();
            }