Check to see if the string is a valid number.

[hh2424]

Is there a way to check to see if a string a a valid number with out using the Char.IsNumber() method?

thanks,

 

[BoulderBum]

Try regular expressions.

System.Text.RegularExpressions

 

[hh2424]

Thanks for responding.

Yes, I have tried regular expressions to try and do that but that will not handle the commas in the string. I could try and remove all commas from the string but I will not know if the comma is put in the correct place of the string.
I've been using the "try-catch" method of checking for number validation but it slowed down the execution time. I was looking of an alternative method to do it.

thanks,

 

[obislavu]

Hi,
Take a look here:
string s1="123.45";
double d=Convert.ToDouble(s1); // d=123.45
s1="-123,456.45";
d=Convert.ToDouble(s1); d=-123456.45
So, use Convert.ToDouble(string) in a try-catch bloc and there will be no slow down execution.

-obislavu-

 

[BoulderBum]

"I have tried regular expressions to try and do that but that will not handle the commas in the string."

Sure it will. You just have to use the proper expression.