Checking if an object is a number in C#

Question

I\'d like to check if an object is a number so that .ToString() would result in a string containing digits and +,-,.

Answer 1

Assuming your input is a string...

There are 2 ways:

use Double.TryParse()

double temp;
bool isNumber = Double.TryParse(input, out temp);

use Regex

 bool isNumber = Regex.IsMatch(input,@"-?\d+(\.\d+)?");