Which controls have ViewState maintained?

Question

I am trying to wrap my head around the control infrastructure to understand which ones ASP.NET maintains view state for.

There are these regular HTML controls ex: <input type="radio" checked="checked"/> -> I understand these do not have viewstate

Then there are HTML controls with runat="server" <input type="radio" checked="checked" runat="server"/> -> Does the viewstate get maintained between postbacks?

Then there are ASP.NET controls <asp:TextBox id="txtMyText" runat="server"/> -> I understand these do have viewstate

We have a few custom controls that inherit HtmlTextBox <myPrefix:myTextBox id="txtMyText" runat="server"/> -> Is this the same as type 2 above?

Is it safe to assume that any control with runat="server" tag will have viewstate maintained?

Answer 1

There are 3 types of controls, the standard HTML elements like , HTML server controls which have the runat=server tag added, and full web controls. Only the web controls have viewstate maintained.