function AddNewRecord()
        {
            var grd = document.getElementById('GridView1');
            var tbod=grd.rows[0].parentNode;
            var newRow=grd.rows[grd.rows.length - 1].cloneNode(true);
            tbod.appendChild(newRow);
            return false;

        }

你也可以删除javascript中的行：

you can also delete the row in javascript:

function delrow(rowindex)

{

var gridID=document.getElementById("<%=InjGrid.ClientID %>");

gridID.deleteRow(rowindex+1);

document.getElementById ("<%=txthidnoofrows.ClientID %>").value=gridID.rows.length-1;

return false;

}