Auto Publish on facebook, linkedin, twitter from asp.net page while publishing

We are looking for auto publishing on social media like, Facebook pages, twitter, LinkedIn, Google Plus, Pintrest, Instagram. When any content posted from admin area it will auto publish the contents to above social media by using the setting provided in admin. the tool required to be work with asp.net projects and it is having all the setting page for activation and deactivation of services by customer. more Important it will provide the configuration like format of the posting. The task will be like a sample task with all the stuff. candidate with already implemented these only apply for the works, at the time of communication you need to show your work before work can be awarded so please do not apply if not having any experience in such task.