This one-click deployment method is still very useful. If you have 100 clients, when a new version needs to be upgraded, then you will definitely not consider upgrading one for your customers. How can it be done automatically? There are two methods, ClickOnce is one, and writing your own automatic update program is another.

I don't talk much about writing automatic update programs myself;

Advantages of using ClickOnce: one-click deployment and one-click upgrade are simple; List signature technology ensures security and so on.