How to 'Trim' a multi line string?

Question

I am trying to use Trim() on a multi line string, however only the first line will Trim(). I can't seem to figure out how to remove all white space from the beginning of each line.

string temp1 = "   test   ";
string temp2 = @"   test
                    line 2 ";

MessageBox.Show(temp1.Trim());
//shows "test".

MessageBox.Show(temp2.Trim());
//shows "test"
        "       line2 ".

Can I use Trim/TrimStart/TrimEnd on a multi line string?

Answer 1

Can I use Trim/TrimStart/TrimEnd on a multi line string?

Yes, but it only Trims the string as a whole, and does not pay attention to each line within the string's content.

If you need to Trim each line, you could do something like:

string trimmedByLine = string.Join(
                             "\n", 
                             temp2.Split('\n').Select(s => s.Trim()));

Answer 2

This trims each line

temp2 = string.Join(Environment.NewLine, 
    temp2.Split(new []{Environment.NewLine},StringSplitOptions.None)
         .Select(l => l.Trim()));