how can we authenticate user via user name and password

how can we authenticate user via user name and password in my local application in asp.net by which directly we authenticate to d开发者_StackOverflow中文版o the tweets in local application which shows on twitter website also... Please do the needful..

It's not possible to validate a Twitter user via a third-party app using username and password. Twitter shut down Basic Authentication. The only avenue available for thir party apps is OAuth.