Applying Design-Time Attributes to a Control : WebControl « Custom Controls « ASP.NET Tutorial






  1. ASP.NET Tutorial
  2. Custom Controls
  3. WebControl
File: ProductView.cs

using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;

namespace myControls
{
    [DefaultProperty("Title")]
    public class ProductView : WebControl
    {

        private string _title = "Product Title";
        private string _description = "Product Description";
        [Category("Product")]
        [Description("Product Title")]
        public string Title
        {
            get { return _title; }
            set { _title = value; }
        }

        [Category("Product")]
        [Description("Product Description")]
        public string Description
        {
            get { return _description; }
            set { _description = value; }
        }


        protected override void RenderContents(HtmlTextWriter writer)
        {
            writer.RenderBeginTag(HtmlTextWriterTag.H1);
            writer.Write(_title);
            writer.RenderEndTag();

            writer.Write(_description);
        }

        protected override HtmlTextWriterTag TagKey
        {
            get
            {
                return HtmlTextWriterTag.Div;
            }
        }
    }
}

File: ShowProductView.aspx

<%@ Page Language="C#" %>
<%@ Register TagPrefix="custom" Namespace="myControls" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>Show ProductView</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>

    <custom:ProductView
        id="ProductView1"
        Runat="server" />

    </div>
    </form>
</body>
</html>








14.19.WebControl
14.19.1.A control that inherits from the WebControl class.
14.19.2.Displaying a table of HTML colors.
14.19.3.File: DropShadow.cs
14.19.4.Specifying the Containing WebControl Tag
14.19.5.View State and Control State
14.19.6.Supporting Control State
14.19.7.Processing Postback Data and Events
14.19.8.Handling Postback Events
14.19.9.contains the custom pager control.
14.19.10.Using Postback Options
14.19.11.Working with Control Property Collections
14.19.12.Using a ControlBuilder
14.19.13.Applying Design-Time Attributes to a Control
14.19.14.Creating a Container ControlDesigner
14.19.15.You can add your own Smart Tasks to a custom control by inheriting a new class from the base DesignerActionList class.
14.19.16.Your own data binding control