用VS编辑html不显示设计拆分源视图的解决方法

<!DOCTYPE html><html><head>    <meta charset="utf-8" />    <title></title></head><body>    <form action="http://www.baidu.com" method="get">        <table border="1" cellspacing="0px" cellpadding="5px" >            <tr>                <td>用户名</td>                <td><input type="text" name="txtName"></td>            </tr>            <tr>                <td>密码</td>                <td><input type="password" name="txtPwd"></td>            </tr>            <tr>                <td>验证码</td>                <td><input type="text" name="txtJudge"><img src="图片/RBL9}0S~$A0H4Q~[N8GK@TV.png" style="height: 28px; width: 104px" /></td>            </tr>            <tr>                <td></td>                <td><input type="checkbox" name="txtRem" />记住密码</td>            </tr>            <tr>                <td></td>                <td><input type="submit" name="reset" /></td>            </tr>         </table>    </form></body></html>