required field validator not working

I am trying to validate to inittial value in dropdwinlist using required filed validator but it is not working. please help any one

* Select Course :

(????? ????? ?????? ??????)

--- Pick One ---

ErrorMessage="Please select" ControlToValidate="drpdwn_SelectCourse"

InitialValue="--- Pick One ---">

* Select Group :

(????? ?? ??? ???)

* Select Subject1 : (????)	--- Pick One --- ErrorMessage="Please select" ControlToValidate="drpdwn_SelectSubject1" InitialValue="--- Pick One ---">	* Select Subject2 : (????)	--- Pick One --- ErrorMessage="Please select" ControlToValidate="drpdwn_SelectSubject2" InitialValue="--- Pick One ---">
* Select Subject3 : (????)	--- Pick One --- ErrorMessage="Please select" ControlToValidate="drpdwn_SelectSubject3" InitialValue="--- Pick One ---">	* Select Subject4 : (????)	--- Pick One --- ErrorMessage="Please select" ControlToValidate="drpdwn_SelectSubject4" InitialValue="--- Pick One ---">
* Select Subject5 : (????)	--- Pick One --- ErrorMessage="Please select" ControlToValidate="drpdwn_SelectSubject5" InitialValue="--- Pick One ---">	* Select Subject6 : (????)	--- Pick One --- ErrorMessage="Please select" ControlToValidate="drpdwn_SelectSubject6" InitialValue="--- Pick One ---">
* Select Subject7 : (????)	--- Pick One --- ErrorMessage="Please select" ControlToValidate="drpdwn_SelectSubject7" InitialValue="--- Pick One ---">	* Select Subject8 : (????)	--- Pick One ---

<%--

Enter Subject for M.Sc.(Ag) :

1.)

2.)

3.)

--%>

3 Replies

Know the answer? Post it — somebody with the same question will find it here.

Rajkiran Swain9y ago
Accepted answer
https://stackoverflow.com/questions/16207040/asp-net-required-field-validator-not-working
Manikandan Murugesan9y ago
Refer the following Link : https://forums.asp.net/t/1545904.aspx?Required+Field+Validator+Not+Working

You have to define the Validation Group Of your Textbox too....to make it work
"txtTimeSlotGroupName" runat="server"
AutoPostBack="false" ValidationGroup="TimeSlot" ClientIDMode="Static">
Abhilash J A9y ago
See: http://aspnettutorials.com/tutorials/validation/validate-form-controls/