//引入命名空间
using System;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;

[assembly: WebResource("image1.jpg", "image/jpeg")]
[assembly: WebResource("help.htm", "text/html", PerformSubstitution=true)]
namespace Samples.AspNet.CS.Controls
{

    public class MyCustomControl : Control
    {

        [System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name="FullTrust")]
        protected override void CreateChildControls()
        {
            
            // Create a new Image control.
            Image _img = new Image();
            _img.ImageUrl = this.Page.ClientScript.GetWebResourceUrl(typeof(MyCustomControl), "image1.jpg");
            this.Controls.Add(_img);

            // Create a new Label control.
            Label _lab = new Label();
            _lab.Text = "A composite control using the WebResourceAttribute class.";
            this.Controls.Add(_lab);

            // Create a new HtmlAnchor control linking to help.htm.
            HtmlAnchor a = new HtmlAnchor();
            a.HRef = this.Page.ClientScript.GetWebResourceUrl(typeof(MyCustomControl), "help.htm");
            a.InnerText = "help link";
            this.Controls.Add(new LiteralControl("<br />"));
            this.Controls.Add(a);
        }
    }
}