This content has 2 years. Some of the information in this post may be out of date or no longer work. Please, read this page keeping its age in your mind..NET MAUI currently have limitations of the supported types in preferences. They can only store simple data types such as strings, integers, and booleans, and do not support more complex data types such as lists or objects. This can make it difficult to store and retrieve more complex data structures. How to store arrays and lists, or complex classes in Preferences? The answer is currently to serialize it. Since Preferences is supporting string saving option, you can serialize your arrays and custom classes, and store the string value. But be aware to store large amounts of data in Preferences as a string. Consider choosing SQLite to store data when there are more than 50-100 items in an array, or your class is more complex than having 25 properties. As Microsoft marks this as a limitation: Performance may be impacted if you store large amounts of text, as the API was designed to store small amounts of text. But there are cases when it makes sense to store other types There are cases when it is easier to store a whole complex object on disk than to store all its properties one by one by calling preferences Set. In this case you may find useful the banditoth.MAUI.PreferencesExtension. Usage This package is extending the basic functions of the built in MAUI Essentials IPreferences by…