Answer Posted / arunajyothi.m

<asp:RegularExpressionValidator ID="revEndDate"
ControlToValidate="txtEndDate" ValidationExpression="((^
(10|12|0?[13578])([/])(3[01]|[12][0-9]|0?[1-9])([/])((1[8-9]
\d{2})|([2-9]\d{3}))$)|(^(11|0?[469])([/])(30|[12][0-9]|0?
[1-9])([/])((1[8-9]\d{2})|([2-9]\d{3}))$)|(^(0?2)([/])(2[0-
8]|1[0-9]|0?[1-9])([/])((1[8-9]\d{2})|([2-9]\d{3}))$)|(^(0?
2)([/])(29)([/])([2468][048]00)$)|(^(0?2)([/])(29)([/])
([3579][26]00)$)|(^(0?2)([/])(29)([/])([1][89][0][48])$)|(^
(0?2)([/])(29)([/])([2-9][0-9][0][48])$)|(^(0?2)([/])(29)
([/])([1][89][2468][048])$)|(^(0?2)([/])(29)([/])([2-9][0-9]
[2468][048])$)|(^(0?2)([/])(29)([/])([1][89][13579][26])$)|
(^(0?2)([/])(29)([/])([2-9][0-9][13579][26])$))"
SetFocusOnError="True" Display="Dynamic"
runat="server">*</asp:RegularExpressionValidator>

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