c# - format string error in c#

Question

The following line gives an error:

 Console.WriteLine("Order:{0},\n Placed:{1},\nshipped:{2},\nTo address:{3} ,{4}, {5}\n\n" + orderid, orderdate, shipdate, shipname, shipaddr, shipcity);

It shows an error as:

(Index (zero based) must be greater than or equal to zero an d less than the size of the argument list.)

Help me out to resolve this error. I know this error happened because of the place holder provided are greater than the variables provided.

Answer 1

我猜你想要：

Console.WriteLine("Order:{0},\n Placed:{1},\nshipped:{2},\nTo address:{3} ,{4}, {5}\n\n", orderid, orderdate, shipdate, shipname, shipaddr, shipcity);

请注意 + 不存在。

Answer 2

Console.WriteLine("Order:{0},\n Placed:{1},\nshipped:{2},\nTo address:{3} ,{4}, {5}\n\n",orderid, orderdate, shipdate, shipname, shipaddr, shipcity);

应该解决问题。

Answer 3

在你的第一个论点之前你有 a+而不是 a 。,更正：

Console.WriteLine("Order:{0},\n Placed:{1},\nshipped:{2},\nTo address:{3} ,{4}, {5}\n\n", orderid, orderdate, shipdate, shipname, shipaddr, shipcity);

因此，该方法仅识别 5 个参数，而不是 6 个。

Answer 4

为什么格式字符串的末尾有一个加号？当格式字符串需要 6 时，这会导致参数为 5。

更改如下：

Console.WriteLine("Order:{0},\n Placed:{1},\nshipped:{2},\nTo address:{3} ,{4}, {5}\n\n", orderid, orderdate, shipdate, shipname, shipaddr, shipcity);