你方法失去的括号（）应该像

your missing parentheses () at method it should be like

private System.Boolean CheckvalidationForRadioButton()
{
...
}

你在方法中缺少括号（），所以。 Net编译器尝试编译为需要get和set访问器的属性。

you are missing parentheses() at method,so .Net compiler trying to compile as property which required get and set accessor .