Posts a link to the week's top post on r/AskReddit. Note that all posts on that sub are self posts.
In the NuGet Package Manager console:
Install-Package Reddit
using Reddit;
...
var reddit = new RedditClient("YourRedditAppID", "YourBotUserRefreshToken");
// Retrieve the SelfPost we want and link to it on r/MySub. The host will automatically be replaced with np.reddit.com and r/AskReddit will be credited in the title. --Kris
var newLinkPost = reddit.Subreddit("AskReddit").Posts.GetTop(t: "week")[0].XPostToAsLink("MySub");