C# what is the regex expression for Special characters

Question

What is the regex expression for the special characters that is greater than 128 in the ASCII extended table?

I have a line with special characters like below, and every special char should be replaced with a space.

input --->  "H€ELLOŠŠŠŠWorld$"
output -->  "H ELLO    World$"

NB: $ is special character that has ASCII<128

To know ASCII<128 characters http://www.ascii-code.com/

Answer 1

Please try the following:

var re = new Regex(@"[\u0080-\uFFFF]");

var s = re.Replace("H€ELLOŠŠŠŠWorld. This is a sample 1234 $.", " ");

Console.WriteLine(s);

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OUTPUT

H ELLO    World. This is a sample 1234 $.

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IDEONE DEMO

Answer 2

Why bother with regexes for this task?

var str = "H€ELLOŠŠŠŠWorld$";

var sb = new StringBuilder(str.Length);
foreach(var c in str)
    sb.Append(c <= 128 ? c : ' ');

var result = sb.ToString();