How to replace string.empty to “0”

Question

Just like the title says.

I\'ve tried doing str.Replace(\"\",\"0\"); but it gave me error because oldValue has zero length.

Is it possi

Answer 1

You can't replace empty string within the string, but you can replace, say, spaces, e.g.

  str = str.Replace(" ", "0"); // providing str is not null

Or you can substitute empty string with "0":

  if (String.IsNullOrEmpty(str))
    str = "0";

When parsing string into int you can do something like that:

  int x = String.IsNullOrEmpty(str) ? 0 : Convert.ToInt32(str);