remove all after space in string c# code example

Example 1: how to remove space between string in c#

string str = "C Sharp";
str = Regex.Replace(str, @"\s", "");

Example 2: how to remove all whitespace from a string in c#

using System.Linq;

  ... 

  string source = "abc    \t def\r\n789";
  string result = string.Concat(source.Where(c => !char.IsWhiteSpace(c)));

  Console.WriteLine(result);