how to generate reset password link for only one time use

Hello Shreyas,

You can achieve it in two ways,

1.Create password reset link, send it to user by email and save it in database, after user used that link to reset password mark it as consumed.

in DB table's column like: Password Reset URL, IsConsumed

2.Create URL and append current time stamp(ticks) to it, when user will use this URL, pick the tick, check if link expired(compare it with expiry time)

URL : http://example.com/resetPassword?t=[ticks]

DateTime dt = new DateTime(ticks);

Compare dt with current datetime instance 

Choose whatever you like. :)