Replace first comma in C #

Question

I am trying to find a way in C # to replace the first occurrence of a regular expression in a string.

So if string = ",1,2,3,4,5", I want to do something like

string = replacefirst(",","")

to always give the result:

string = "1,2,3,4,5"

Answer 1

You can use Trim for this:

var myTrimmedString = myString.TrimStart(',');

Answer 2

string s = "a;b;c;";
Regex rx = new Regex(";");
string s2 = rx.Replace(s, "", 1);  //"ab;c;"

Answer 3

In the regular expression, “^” means “beginning”

Regex.Replace(",1,2,3,4,5", "^,", "")

gives 1,2,3,4,5

Answer 4

What about:

if(yourString.Startswith(','))
      yourString = yourString.Substring(1);

Answer 5

Change the regular expression so that it matches only the semicolon.

Answer 6

string MyString = ",1,2,3,4,6";
MessageBox.Show(MyString.Substring(1, MyString.Length-1));