string not contains in c# code example

Example 1: if string contains number c#

"abc3def".Any(c => char.IsDigit(c));

// Or to make it shorter:
"abc3def".Any(char.IsDigit);

Example 2: c# string contains

bool b = s1.Contains("myString");

Example 3: c# string contains

var str = "a string to search in";
bool isIn = str.Contains("a string");