[Devexpress] Make Head button for Expend/Collapse for Navbar Control with ITemplate

@ASPX Page​ @ASPX Cs Page Load : ASPxNavBar1.GroupHeaderTemplate = new MyGroupHeaderTemplate("my button"); ASPxNavBar1.ClientSideEvents.HeaderClick = "function(s,e){e.cancel=true;}"; @Class public class MyGroupHeaderTemplate : ITemplate { string caption; public MyGroupHeaderTemplate(string caption) { this.caption = caption; } #region ITemplate Members public void InstantiateIn(Control container)..

2020.01.29