日期计算
day =DateTime.Today;
取出今天日期,,,怎么算昨天的啊
谢谢

[解决办法]
DateTime dt = DateTime.Today;
dt = dt.AddDays(-1);
dt.Date
[解决办法]
DateTime dt = DateTime.Today;
Console.WriteLine(dt.AddDays(-1));

[解决办法]
day = DateTime.Today.AddDays(-1);