asp.net 用 WebBrowser 控件如何控制只打印（预览）选定部分
如题，
<html xmlns="http://www.w3.org/1999/xhtml"><head id="Head1" runat="server"> <title>打印监管记录表</title> <OBJECT id=WebBrowser classid=CLSID:8856F961-340A-11D0-A96B-00C04FD705A2 height=0 width=0></OBJECT> <input type=button value=打印 onclick=document.all.WebBrowser.ExecWB(6,1)> <input type=button value=直接打印 onclick=document.all.WebBrowser.ExecWB(6,6)> <input type=button value=页面设置 onclick=document.all.WebBrowser.ExecWB(8,1)> <input type=button value="打印OK" onclick=" return myprint(this);"> <input type=button value=打印预览 onclick=document.all.WebBrowser.ExecWB(7,1)> </head><body><OBJECT classid="CLSID:8856F961-340A-11D0-A96B-00C04FD705A2" id="wb" width="0" height="0"></OBJECT> <form id="form1" runat="server"> <table width="100%" border="0" class="Noprint" cellpadding="0" cellspacing="2" align="center"> <tr> <td height="21" align="center"><img src="images/print.jpg" align="absmiddle" style="cursor:hand;" onClick="printpreview();">打印</td> </tr></table><!--startprint--><div id="myDiv">打印内容 </div><!--endprint--> </form></body></html>
