Decimal format in Regular Expression

Question

In winforms, I use Regular expression to check decimal format. Please check whether my format is correct or not.

For example

123456.1234 

"^{0,1}[0-9]{0,1}[0-9]{0,1}[0-9]{0,1}[0-9]{0,1}[0-9]{0,1}[.]{0,1}[0-9]{0,1}[0-9]{0,1}[0-9]{0,1}$"

Is there any better format?

Actually I just wanna get 6 numeric and 4 decimal points only. How to format it?

Answer 1

Wouldn't ^\\d+(\\.\\d)?$ be better?

This check for a number at the start of the string, then maybe a . followed by another number.