在web.config 文件中全局注册自定义控件
<system.web>
<pages>
<controls>
<add tagPrefix="rx" assembly="HYLQ.Component" namespace="HYLQ.Component"/>
</controls>
</pages>
<pages>
<controls>
<add tagPrefix="rx" assembly="HYLQ.Component" namespace="HYLQ.Component"/>
</controls>
</pages>