<div id="region1" style="border:1px solid green;margin-top:10px;height:200px;">
      <br />
        服务器控件:&nbsp;
        <asp:TextBox ID="TextBox2"   runat="server"></asp:TextBox><br />
        <br />
        客户端控件:&nbsp;
        <input id="Text2" type="text" /><br />
        <br />
        服务器按钮<asp:Button ID="Button3" runat="server" Text="Button" /><br />
        <br />
        客户端按钮<input id="Button4" type="button" value="button" />
        <input id="Submit2" type="submit" value="submit" />
</div>