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![State Management - Sample[ Bindable(true), Category("Appearance"),DefaultValue(""), Description(“...") ]public string Text { get { object o = ViewState[“Text"]; if (o == null) return String.Empty; else return (string)o; } set {ViewState[“Text"] = value; }}](https://image.slidesharecdn.com/session3asp-netcontrolarchitecture-110829121004-phpapp01/85/Asp-Net-Control-Architecture-11-320.jpg)
![State Management - Sample[ Bindable(true), Category("Appearance"),DefaultValue(""), Description(“...") ]public string Text { get { object o = ViewState[“Text"]; if (o == null) return String.Empty; else return (string)o; } set {ViewState[“Text"] = value; }}](https://image.slidesharecdn.com/session3asp-netcontrolarchitecture-110829121004-phpapp01/75/Asp-Net-Control-Architecture-11-2048.jpg)
Uploaded bySundararajan Subramanian
Asp.Net Control Architecture
This document discusses ASP.Net control architecture and custom control development. It covers the different types of controls like user and server controls. It demonstrates how to create custom controls, manage their properties and state, and handle control events. The control lifecycle and best practices for performance are also discussed. Creating composite controls using existing controls is presented as a way to build more complex controls through composition.
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Asp.Net Control Architecture
- 1. Asp.Net Control ArchitectureSundararajanSubramanianSoftware Development Engineer | MicrosoftSundararajan.Subramanian@microsoft.com
- 2. AgendaIntroductionWhat is aCustom Control?Custom Controls User ControlsServer ControlsUser Controls – DemoServer Controls – Rendering – DemoProperties & State ManagementControl Life Cycle.Server Controls – Composite ControlsEvent HandlingSummary
- 3. What is aServer Control?.Net component that is used to generate the user interface of an ASP.NET Web application.Eg: Label, GridView, etc.,
- 4. Types of ControlsDeclarativeMarkup in .Aspx Page Common functionalities Refactored into a User Control - .ascx Reusable behavior built /compiled and packaged as Server Control
- 5. Ways to AuthorCustom controlsUser ControlsSimple, declarative authoring model (.ascx file)Scoped to a single applicationWell suited to static content and layout“Custom” or Compiled ControlsCode-based authoring model (.cs or .vb class file)Easily shared across applicationsWell suited to dynamic or programmatic generation of content and layoutMore complex, but also more capabilities
- 6.
- 7. Custom Server control– Rendering SampleDEMO
- 8. Which Base ClassTo Choose?System.Web.UI.controlSystem.Web.UI.WebControls.WebControlDerive from Existing Controls
- 9. Properties Getters And SettersAllowsthe Client to set the properties at design time or runtime.String _Text;Public String Text{get { return _Text;}Set { _Text=Value;}}
- 10. State ManagementView StateSession StateApplication StateControl state Override Savecontrolstate and LoadcontrolstateCustom State managementOverride LoadViewstate and SaveviewState
- 11. State Management -Sample[ Bindable(true), Category("Appearance"),DefaultValue(""), Description(“...") ]public string Text { get { object o = ViewState[“Text"]; if (o == null) return String.Empty; else return (string)o; } set {ViewState[“Text"] = value; }}
- 12. Control Life CyclePostBack Only
- 13. Control Life Cycle….Post Back Only
- 14. Raising an EventDefinethe EventArgsDefine the Event DelegateDefine a method that invokes the event Delegatepublic class LogOutEventArgs : EventArgs {...}public delegate void LogOutEventHandler(object sender,LogOutEventArgs e);protected virtual void OnLogOut(LogOutEventArgs e) { if (LogOut != null) {LogOut(this, e); } }
- 15.
- 16. Composite controlsBased onobject compositionCombining the existing controls and delegating the responsibility to the existing controls.Reuses the feature of existing controls
- 17. Composite Control EventHandlingDEMO
- 18. Performance Considerations Use EventProperties for handling EventsStore only necessary information in StateStore very minimal information in Control state
- 19. Summary Controls provide waysto reuse functionality in web appsUse User controls for within application usageCreate Specialized derived controls to make Incremental changes to existing controlsUse Composition to leverage existing controls to build more complex controls
- 20. ContactContact me @http://blogs.msdn.com/sundararajanSundararajan.subramanian@microsoft.com