?????? ?????????window.print??????????????????????????????????

<script language="Javascript">
function preview()
{
    bdhtml=window.document.body.innerHTML;
    sprnstr="<!--startprint-->";
    eprnstr="<!--endprint-->";
    prnhtml=bdhtml.substr(bdhtml.indexOf(sprnstr)+17);
    prnhtml=prnhtml.substring(0??prnhtml.indexOf(eprnstr));
    window.document.body.innerHTML=prnhtml;
    window.print();
}
</script>
<!--?????????-->
<form id="WebForm1" method="post" runat="server">
     <center>????????????????</center>
     <!--startprint-->
     <div align="center">
         <asp:DataGrid id="dgShow" runat="server">
              <!--?????????-->
         </asp:DataGrid>
     </div>
     <!--endprint-->
     <center>?????????2??????</center>
     <div align="center">
         <input type="button" name="print" value="????????" onclick="preview()">
     </div>
     <style> @media Print { .Noprn { DISPLAY: none }}
     </style>
     <p class="Noprn">?????</p>
     <table id="datagrid">
         <tr>
              <td>???</td>
         </tr>
     </table>
     <input class="Noprn" type="button" onclick="window.print()" value="print">
</form>


????WebBrowser ???????

?????? ????????????

??????????????????????WebBrowser??????????????????????????????????????????????????

<object ID=‘WebBrowser1’ WIDTH=0 HEIGHT=0
CLASSID=‘CLSID:8856F961-340A-11D0-A96B-00C04FD705A2’>
//???
WebBrowser1.ExecWB(6??1);
//???????
WebBrowser1.ExecWB(8??1);
//??????
WebBrowser1.ExecWB(7??1);
//?????
WebBrowser1.ExecWB(6??6);

//???????PrintClass
public string DGPrint(DataSet ds)
{
    //DGPrint??е?????????DataTable?????????HTML??????????
     DataTable myDataTable=new DataTable();
     myDataTable=ds.Tables[0];
 
     int myRow=myDataTable.Rows.Count;
     int myCol=myDataTable.Columns.Count;
 
     StringBuilder sb=new StringBuilder();
 
     string colHeaders="<html><body>"+"<object ID='WebBrowser' WIDTH=0 HEIGHT=0 CLASSID='CLSID:8856F961-340A-11D0-A96B-00C04FD705A2'VIEWASTEXT></object>" +"<table><tr>";
 
     for(int i=0;i<myCol;i++)
     {    
         colHeaders +="<td>"+ myDataTable.Columns[i].ColumnName.ToString()+"</td>";
     }
     colHeaders += "</tr>";
     sb.Append(colHeaders);
 
     for(int i=0;i<myRow;i++)
     {      
         sb.Append("<tr>");
         for(int j=0;j<myCol;j++)
         {
              sb.Append("<td>");
              sb.Append(myDataTable.Rows[i][j].ToString().Trim());
              sb.Append("</td>");
         }
         sb.Append("</tr>");  
     }
 
     sb.Append("</table></body></html>");
     colHeaders=sb.ToString();              
     colHeaders+="<script languge='Javascript'>WebBrowser.ExecWB(6??1); window.opener=null;window.close();</script>";
     return(colHeaders);
}