In a page there is dropdown list with the name of the
cities like Bangalore,Pune,Chennai,Other and a text box
that would enable the user to enter the name of the city if
other is selected. How to enable validation on the text box
if other is selected
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Answer Posted / swethasri
Client Side validation:
A Javascript function can be written to disable/enable the
text box and it can be called under
DrowpDownList_SelectIndexChanged event. We can provide an
if condition and get the required change in javascript
function.
or else
Server side validation:
we can make the dropdownlist 'AutoPostBack' property true.
and under the DrowpDownList_SelectIndexChanged event, we
can disable/enable the textbox.
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