adding a host meaning in English

一台主机

If you add a host control to a document at design time , you should not remove it programmatically at run time because the next time you try to use the control in code , an exception is thrown
如果在设计时向文档添加宿主控件，则不应在运行时以编程方式移除该控件，因为下次尝试在代码中使用此控件时会引发异常。宿主控件的
After adding the compiled assembly . dll file to your web site s bin folder , adding the xml files , adding a host page with the custom controls referenced on it , and creating the entry in the web . config file , you can work with the controls in the designer
将编译的程序集. dll文件添加到网站的bin文件夹、添加xml文件以及添加引用了自定义控件的主页面并在web . config文件中创建项之后，可以在设计器中使用这些控件。