ValidationExpression

[edones]

I need to Validate two Controls one to only allow null or 10 numbers and another control to only allow null or (one alfa and 5 digits) ex G12345 or leave blank.


ValidationExpression="^{5,10}"
ErrorMessage="* Most have 10 digits or no value"


and second


ValidationExpression="^{d,5}"
ErrorMessage="* Most have one Alfa and 5 digits number or no value"

I will aprecciate any help. Thanks,

[edones]

I think I have the right combination now.

ValidationExpression="^.{1,}\d{5}$"
ErrorMessage="* Most have one alfa and 5 digits number"



ValidationExpression="^\d{10,}"
ErrorMessage="* Most have 10 digits number"