c# isNumeric function

Script version:1.0
Language:ASP.net
Rating:
5 (1 votes cast)
Category:Form Validation
Description:There is no built in function for isNumeric, however there is a tryParse function that returns true if a string can be converted to a number. A quick and simple method for isNumeric is below.
Instructions:the function will return true is a string can be converted to an double. You can change the function to check for int by substituting return Double.TryParse to Int.tryparse like this:

public static bool IsNumeric(string input) {
if (input != null) {
int output;
return int.TryParse(Convert.ToString(input), out output);
} else {
return false;
}
}

(remember to also change 'output's type from double to int also.
Code:




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