What's a C# regular expression that'll validate currency, float or integer?

Question

What is a regular expression suitable for C# that\'ll validate a number if it matches the following?

 $1,000,000.150
 $10000000.199
 $10000 
 1,         


        

Answer 1

Be careful with floats. Eventually you will hit a case such as 0.01 represented as 0.00999999. Strings or integers are better to use.