c#中Console.Writeline()两种使用方式的不同?
char[] trimChars = { ' ', 'e', 's' };
string userResponse = Console.ReadLine();
userResponse = userResponse.ToLower();
userResponse = userResponse.Trim(trimChars);
Console.WriteLine("The string is "+ userResponse);
if (userResponse == "y")
{
Console.WriteLine("It inlude the special char");
}
其中Console.WriteLine("The string is "+ userResponse);这句如果采用Console.WriteLine("The string is {0}", userResponse);就会出现异常这是什么原因?