how get integer only and remove all string in C# [duplicate]

Answer 1

input = Regex.Replace(input, "[^0-9]+", string.Empty);

Answer 2

Try this:

string XYZ = string.Join(null, System.Text.RegularExpressions.Regex.Split(“XYZ  77”, “[^\d]”));

Answer 3

string snum = System.Text.RegularExpression.Regex.Match(s, "\d+").Value;
int num;
if (!int.TryParse(snum, out num))
  throw new Exception();

Answer 4

try this:

Convert.ToInt32(string.Join(null, System.Text.RegularExpressions.Regex.Split(s, "[^\\d]")))

it returns integer value 1.