如何检测字符串中的特殊字符和数字？

Question

Does anyone have an idea on how to detect special characters in a string via an if statement?

I need the output to look something like this:

Enter Name: Johnson!
INVALID INPUT TRY AGAIN.
Enter Name: Johnson
ACCEPTED INPUT.

Is there any way to do that with only using.System ?

Answer 1

As your question is not very clear, try this, if you want to check one of some specified characters are exist in your string input

var specialChars = new[] {"!", ":", ",", "/", "1"}; //add some or more characters or numbers as into this string array
var result = specialChars.Any(input.Contains)