make 2 characters from textbox are readonly...

Question

hi friends i m working on finance software and i want to do the decimal point as read only how to do it ????
i want it in ASP using c#.

textbox text is like this 999.15

all the characters are editable except decimal point.

plz reply me... thank you....
OMKAR

Kirtan Patel · Answer

Use masked Textbox Extender from ajax control Tool Kit that will fix your format if you want to use fix number in textbox with float

Lalit M · Answer

try this link http://bytes.com/topic/javascript/answers/90703-user-input-box-first-2-characters-read-only-value