datagrid文本框多行传值问题，请指教！来者有分

我的HTML代码如下，如何对文本框不为0的行进行传值并通过DATAGRID帮定到下一个页面？<body bgColor="#ffffff" MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server"><FONT face="宋体">
<TABLE id="Table2" style="Z-INDEX: 101; LEFT: 8px; POSITION: absolute; TOP: 16px" cellSpacing="0"cellPadding="0" width="95%" border="0"><TBODY><TR>
<TD height="10"><STRONG></STRONG></TD></TR>
<TR>
<TD style="HEIGHT: 1px" background="img/bg12.gif"><STRONG></STRONG></TD>
</TR>
<TR>
<TD height="10"><STRONG></STRONG></TD>
</TR>
<TR>
<TD>
<TABLE id="Table3" height="100%" cellSpacing="0" cellPadding="0" width="100%" border="0">
<TR>
<TD><STRONG>加入临时申请列表</STRONG></TD>
<TD align="right"><asp:hyperlink id="hl_Exit" runat="server"><img src="img/logout1.gif" border="0" align="absbottom">Exit</asp:hyperlink></TD>
</TR>
</TABLE>
</TD>
</TR>
<TR>
<TD height="15"><asp:datagrid id="dg_kcbgyp" runat="server" AutoGenerateColumns="False" Width="600px">
<Columns>
<asp:BoundColumn DataField="wpbh" HeaderText="物品编号"></asp:BoundColumn>
<asp:BoundColumn DataField="pm" HeaderText="品名"></asp:BoundColumn>
<asp:BoundColumn DataField="xh" HeaderText="型号"></asp:BoundColumn>
<asp:BoundColumn DataField="gg" HeaderText="规格"></asp:BoundColumn>
<asp:BoundColumn DataField="pp" HeaderText="品牌"></asp:BoundColumn>
<asp:BoundColumn DataField="dw" HeaderText="单位"></asp:BoundColumn>
<asp:BoundColumn DataField="bz" HeaderText="备注"></asp:BoundColumn>
<asp:BoundColumn DataField="zksl" HeaderText="在库数量"></asp:BoundColumn>
<asp:TemplateColumn HeaderText="申请数量">
<ItemTemplate>
<asp:TextBox id="txtSL" runat="server" Width="40px" ToolTip="申请数量不能大于在库数量！">0</asp:TextBox>
</ItemTemplate>
</asp:TemplateColumn>
</Columns>
</asp:datagrid></TD>
</TR>
<TR>
<TD><asp:button id="btnTemp" runat="server" Text="加入临时申请列表"></asp:button<asp:button id="goBack" runat="server" Text="返回"></asp:button></TD>
</TR>
</TBODY>
</TABLE>
<asp:Label id="Label1" style="Z-INDEX: 102; LEFT: 144px; POSITION: absolute; TOP: 352px" runat="server"Width="336px" Height="56px">Label</asp:Label></FONT></form>
</body>