在C＃中检查命令行参数的长度

Question

What I am trying to do is ensure a Argument being passed from the command line is between a specific set of characters, however the code doesn't seem to be highlighting any issues when a value outside the acceptable range is used.

if (args[1].Length < 10 && args[1].Length > 40) // Test to see if the password is between 10 and 40 characters
{
Console.WriteLine("Please use a password between 10 and 40 characters");
Environment.Exit(0);
}

I was wondering if anyone might have any suggestions for why this is not working. The arguments being passed are -e password file1.txt file2.txt

Thanks in Advance!

Alistair

Answer 1

您的逻辑有误，应||

    if (args[1].Length < 10 || args[1].Length > 40) // Test to se

Answer 2

该参数不能在长度上比10 更小 并且比40.你应该选择能满足这些条件（使用较长的 有条件或操作员 ），但没有严格的两项：

if (args[1].Length < 10 || args[1].Length > 40)

Answer 3

It should be:

if (args[1].Length < 10 || args[1].Length > 40) // Test to see if the password is  between 10 and 40 characters
{
   Console.WriteLine("Please use a password between 10 and 40 characters");
   Environment.Exit(0);
}

Answer 4

You gave wrong conditions:

It should be:

if (args[1].Length < 10 || args[1].Length > 40)