c# string Trim doesn't work, a weird problem

Question

Hi, I have string like that:

string val = 555*324-000

now, I need to remove * and - chars, so I use that code (based on MSDN)

char[] CharsToDelete = {'*', '(', ')', '-', '[', ']', '{', '}' };
string result = val.Trim(CharsToDelete);

but the string remains the same. What's the reason ?

Answer 1

Trim ...Removes all leading and trailing occurrences of a set of characters specified in an array from the current String object. You should use Replace method instead.

Answer 2

Because Trim() will remove any character in CharsToDelete at the beginning and at the end of the string.

You should use val.Replace() function.

Answer 3

The correct way to do this would be

string val = 555*324-000
char[] CharsToDelete = {'*', '(', ')', '-', '[', ']', '{', '}' };

foreach (char c in CharsToDelete)
{
  val = val.Replace(c, '');
}