Transform the ASP.NET user control to custom control
Author: Kevin Cheng (Cheng and construction) Last Modified: 2006-03-14 Overview: How to ASP.NET user controls for ASP.NET custom control transplantation Keywords: Asp.net, user controls, custom controls applicable to this article Reader: - Familiar with the ASPNET, you can create ASCX User Controls - Want to create a custom control, while the readers who are afraid of their prayer implementations: - ASCX control routines used herein: WebFTP060308 (PM06) .rar - this article Custom control routines: WebftpControl 1.0.2259_source.rar term declaration: Field class member variable Property class Properties Attribute class feature Namespace Namespace Assembly assembly query: ASP.NET Custom Control is quite convenient, but relative ASCX users Controls, due to its no visual programming support, it is quite difficult to prepare. Is there a simple way? You can use the advantages of ASCX visualization programming, but also use the convenient features of custom controls. This article describes a solution: first design ASCX control, and then transform into user controls. The following is a specific step. First, create an ASCX control, and debugging how to create an ASCX user control is not the focus of this article, skip ~ The ASCX routine used in this article can click here to download. This routine creates a web file management ASCX control. Effects such as: 2 Initialization control. It can be extended to three small functions, such as:
Private
Void
InitializationComponent () {createcomponent (); setcomponentproperty (); setcomponentevent ();
1
CreateComponent () function is used to create all the controls used, and organize their hierarchy relationships.
Private
Void
CreateComponent () {
//
Create
LBLCurrPath
=
New
Label (); lblupload
=
New
Label (); lblnewfolder
=
New
Label ();
//
Nest
Controls.add
THIS
.lblcurrpath; controls.add (
New
HtmlGenericControl
"
Br
"
));
THIS
.panadmin.controls.add (
THIS
.file);
2
The setComponentProperty () function is used to set the properties of these controls, such as
Private
Void
Setcomponentproperty () {lblcurrpath.font.size
=
FontUnit.xlarge; lblcurrpath.cssclass =
"
Webftp_title
"
Paninfo.backcolor
=
Color.Yellow; Paninfo.visible
=
False
It is worth noting that the combined binding control provided by the ASPNET is more complicated, see Appendix 2 (
3
) SetComponEntevent () Settings the event handle of the control, this is copied from the original InitializationComponent function, such as
Private
Void
Setcomponentevent () {
THIS
.btnupload.click
=
New
System.eventhandler
THIS
.btnupload_click;
THIS
.btnnewfolder.click
=
New
System.eventhandler
THIS
.btnnewfolder_click;
THIS
.dg.ItemCommand
=
New
System.Web.ui.WebControls.DataGridCommandeventHandler
THIS
.dg_itemcommand;
THIS
.Load
=
New
System.eventhandler
THIS
.Page_load);
(3) Fill the render () function to render the output effect. It can be extended to two small functions, such as
protected
Override
Void
Render (HTMLTextWriter Output) {renderclientScript (OUTPUT); renderServerComponent (OUTPUT);
1
RenderClientScript function can be used to output client scripts, as well as style style code, such as:
Private
Void
RenderClientScript (HTMLTextWriter output) {Output.write
"
