我先前提过，ASP.NET 1 . x中使用服务器端控件最另人沮丧的一面是关于ViewState的非全有即全无的状态。

I mentioned earlier that one of the most frustrating aspects of working with server-side controls in ASP.NET 1.x is the all-or-nothing mentality with respect to view state.

youdao

这很重要，因为 ASP.NET 中的大部分服务器端控件模型是根据这样一个假设生成的，那就是 — 如果用户回发到相同页面，所有控件保持其状态不变。

This is important because much of the server-side control model in ASP.NET is built around the assumption that all controls retain their state if the user posts back to the same page.

youdao

若要在服务器端使用用户输入的值，则获取并设置绑定到控件的数据元素。

To work with user-entered values on the server side, you get and set the data elements bound to the controls.

youdao