podcast-app | Android podcast app made with Jetpack Compose and ExoPlayer | Android library

Here are a few pointers:

• Make a class where you store the information from RSS for each element (eg. MyPodcastEntry.cs with properties Index (count), Subject, Summary, ...)
• Populate those classes in your rssRead and add them to a List
• Add that list to the listbox instead of using Tuple<>
• Override ToString in that class to adjust how they are displayed in the listbox

This will help you keep and use the information from RSS. There is no need to run rssRead every time you click the listbox. Once you have read the RSS feed and put the data into your class then you can access this information any time.

Now in your MouseClick event handler you can access the SelectedItem of the listbox, cast it to your class, and then access the properties that you previously assigned, to assign to the richtextbox text, no need for either rssRead or the loop.

Optional stuff:

• instead of MouseClick event, use SelectedIndexChanged
• There are a bunch of rss feed reader nugets available, no need to make your own nvm you're using Syndication which is fine :)
• Clean code
  • Unused variables x, y
  • Define variables subject and summary in the foreach instead of at the top
  • Better yet, don't use subject and summary variables at all since their values are already stored in item.Title.Text and item.Summary.Text

Have fun with C#!