c# how to check string is number
string s1 = "123";
string s2 = "abc";
bool isNumber = int.TryParse(s1, out int n); // returns true
isNumber = int.TryParse(s2, out int n); // returns falsec# how to check string is number
string s1 = "123";
string s2 = "abc";
bool isNumber = int.TryParse(s1, out int n); // returns true
isNumber = int.TryParse(s2, out int n); // returns falsec# regex number only
Regex
string input = "1-205-330-2342";
string result = Regex.Replace(input, @"[^d]", ""); //number onlyCopyright © 2021 Codeinu
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