var user = Global.userIpList.FirstOrDefault(u => u.UserId == CookieInfo.UserId.ToInt());
括号里的 u => u.UserId == CookieInfo.UserId.ToInt()
解决方案
5
lambda表达式，匿名方法。
可用下边代码替换
可用下边代码替换
private bool Method(User u)
{
return .UserId == CookieInfo.UserId.ToInt();
}
...
var user = Global.userIpList.FirstOrDefault(Method);
15
var user = Global.userIpList.FirstOrDefault(u => u.UserId == CookieInfo.UserId.ToInt());
等于
select * from userIpList where UserID=CookieInfo.UserId
这是lambda，匿名表达式