Question

每当我尝试下载excel文件时，都会将其保存为Excel版本的1997-2003，并且我使用了所有内容类型，但找不到解决方案，因为它仍将其保存为“ xls”而不是“ xlsx”。

我有一个Export方法，其中包含以下代码。

instance Monad' (State s) where
   -- return' :: a -> m a (where m = State s)
   -- return' :: a -> State s a
   return' x = State { runState = \s -> (x,s) }

   -- bind' :: m a -> (a -> m b) -> m b (where m = State s)
   -- bind' :: State s a -> (a -> State s b) -> State s b
   bind' st f =
   -- Good so far: we have two arguments
   --   st :: State s a
   --   f :: a -> State s b
   -- We also need a result
   --   ... :: State s b
   -- It must be a State, so we can start with:
       State { runState = \s ->
   -- Now we also have
   --   s :: s
   -- That means we can run st:
           let (x, s') = runState st s in
   --   runState :: State s a -> s -> (a, s)
   --   st :: State s a
   --   s :: s
   --   x :: a
   --   s' :: s
   -- Now we have a value of type 'a' that we can pass to f:
   --   f x :: State s b
   -- We are already in a State { ... } context, so we need
   -- to return a (value, state) tuple. We can get that from
   -- 'State s b' by using runState again:
           runState (f x) s'
       }

在Asp .Net Webform中使用Excel 2016扩展名xlsx导出到

0 个答案: