Identify if a string is a number

Question

If I have these strings:

1. \"abc\" = false

2. \"123\" = true

3. \"ab2\"

Answer 1

Hope this helps

string myString = "abc";
double num;
bool isNumber = double.TryParse(myString , out num);

if isNumber 
{
//string is number
}
else
{
//string is not a number
}