Enter new textvalue in dropdownlist

Then u have these controls :-
1) one radio button
2) one dropdownlist
3) one textbox
4) one button
 
logic should be:-
 
(i) for selecting radio button, give required field validator or put some validation logic so that user has to select radio button before submiting.
 
(ii) dropdownlist updation, when user inputs some text in textbox compare textbox value to dropdownlist value. If that value is present in dropdownlist then avoid to update in database and give a message to user. If that is new value then 1st insert that value to database and then fetch data from database againg and bind to the dropdownlist.
 
Fun coding dear....

hi,
 
check the below link.
 
http://www.telerik.com/community/forums/aspnet-ajax/combobox/add-new-records-within-radcombobox.aspx[^]
 
hope it helps.

Hi, try it below:
 
http://www.codeproject.com/aspnet/combobox.asp[^]
 

 
__________________________________
Projects I'm working on:
 
Live Chat
Email Marketing