纯脚本搞掂DataGrid表表头不动，表身滚动。(使用Style-Expression)

<style>
TD.lockedhead { POSITION: relative; ; TOP: expression(lockhead(this)) }
</style>
<script language="javascript">
function lockhead(cell)
{
var table=cell.parentElement.parentElement;
while(table&&table.tagName.toLowerCase()!="table")
table=table.parentElement;
var _div=table.parentElement;
return _div.scrollTop+(cell.parentElement.rowIndex)*(parseInt(table.border)+parseInt(table.cellSpacing)-1);
}
</script>
<script language="javascript">
function LockHead(table,cnt)
{

if(table&&table.rows.length>=cnt)
{
for(k=0;k<cnt;k++)
{
for(i=0;i<table.rows[k].cells.length;i++)
{
table.rows[k].cells[i].className="lockedhead";
}
}
}
}
LockHead(Form1.all.DataGrid1,1);


</script>