What type of pattern do the Web User Controls in ASP.NET fall into?

I'm just 开发者_运维问答curious to know what type of pattern do the Web User Controls in ASP.NET fall into?

I don't think we can talk about a design pattern, I would say that its related to
DRY and KISS principles

You create a user control when you're trying to group some functionality. Reasons for doing this are:

• To split a page in smaller pieces for simplicity (KISS)
• To avoid repeated logic (DRY)