https://stackoverflow.com/questions/8095256/asp-net-radio-button-change
You'll need to specify the attribute and value AutoPostBack="true"
in order to tell ASP.NET that changing of that element should trigger a postback.
It should be applied to each individual RadioButton which you wish to cause a postback.
https://stackoverflow.com/questions/5079237/problem-checking-a-radio-button-in-code-behind
在代码中设置radiobutton的checked的属性的时候,必须分别设置。否则会导致设置无效的问题
比如radiobutton1和radiobutton2,radiobutton1的checked属性为false,radiobutton2的checked属性为true。
假如在页面设置radiobutton1的checked为true,那么radiobutton2的checked会自动变成false。
但是如果在代码层直接设置的话,radiobutton1.checked=true;radiobutton2的checked属性还是保持true,不会自己变化的。需要另外用代理单独设置。因为radiobutton2的checked还是true,所以对radiobutton1的checked的设置无效