This comprehensive guide explores the integration of proxies with HttpClient in C#, explaining the importance of using proxies for tasks like web scraping and data gathering to enhance online privacy and overcome restrictions such as IP bans and geo-blocking. It provides step-by-step instructions on setting up a proxy with HttpClient, including handling proxy authentication, managing SSL certificate issues, and implementing proxy rotation to avoid detection and blocking. The guide also highlights the risks associated with free proxy services and recommends using reputable providers like Bright Data for more reliable, rotating proxy solutions. Through practical code examples, it demonstrates how to configure HttpClient to use proxies effectively, enhancing both security and task reliability.