Asp.Net WebControl开发

    这两天有时间研究了下Web自定义控件的开发，觉得还是满有意思的，跟大家分享一下我的成果！

    1.ImageLinkButtom

源代码展示：

1using System;
2using System.Collections.Generic;
3using System.ComponentModel;
4using System.Linq;
5using System.Text;
6using System.Web;
7using System.Web.UI;
8using System.Web.UI.WebControls;
9
10namespace JackSoftControls.UI.Buttons
11{
12    [DefaultProperty("ControlWidth")]
13    [DefaultEvent("OnClick")]
14    [ToolboxData("<{0}:ImageLinkButton runat=server></{0}:ImageLinkButton>")]
15    [System.Drawing.ToolboxBitmap(typeof(ImageLinkButton), "UI.Buttons.ImageLinkButton.bmp")]
16    public class ImageLinkButton : WebControl, INamingContainer, IPostBackEventHandler
17    {
18        private static readonly object _Click;
19        private string PoseBackString = string.Empty;
20        [Description("当图片连接按钮按下时，您希望程序做的事情，请提供功能的详细代码实现")]
21        public event EventHandler OnClick
22        {
23            add
24            {
25                Events.AddHandler(this, value);
26            }
27            remove
28            {
29                Events.RemoveHandler(this, value);
30            }
31        }
32        [Description("指定空间的宽度，一般为图片宽度")]
33        public int ControlWidth
34        {
35            get;
36            set;
37        }
38        [Description("指定空间的高度，一般为图片高度")]
39        public int ControlHeight
40        {
41            get;
42            set;
43        }
44        [Description("指定图片的地址")]
45        [UrlProperty]
46        public string ImageUrl
47        {
48            get;
49            set;
50        }
51        protected override void Render(HtmlTextWriter output)
52        {
53            if ((base.Site != null) && base.Site.DesignMode)
54            {
55                PoseBackString = "JavaScript:__doPostBack('" + this.ClientID.ToString().Trim() + "','1')";
56                output.Write(string.Format("<a href=\"{0}\"><img src=\"{1}\" style=\"width:{2};height:{3};border:0\" /></a>", PoseBackString, this.ImageUrl, this.ControlWidth, this.ControlHeight));
57            }
58            else
59            {
60                base.Render(output);
61            }
62        }
63        protected override void CreateChildControls()
64        {
65            PoseBackString = "JavaScript:__doPostBack('" + this.ClientID.ToString().Trim() + "','1')";
66            string ImageButtonContext = string.Format("<a href=\"{0}\"><img src=\"{1}\" style=\"width:{2};height:{3};border:0\" /></a>", PoseBackString, this.ImageUrl, this.ControlWidth, this.ControlHeight);
67            LiteralControl Lin1 = new LiteralControl(ImageButtonContext);
68            Controls.Add(Lin1);
69        }
70
71        IPostBackEventHandler 成员#region IPostBackEventHandler 成员
72        public void RaisePostBackEvent(string eventArgument)
73        {
74            TextOnClick(this, EventArgs.Empty);
75        }
76        #endregion
77
78        protected void TextOnClick(object sender, EventArgs e)
79        {
80            EventHandler hd = (EventHandler)base.Events[this];
81            if (hd != null)
82            {
83                hd(sender, e);
84            }
85        }
86    }
87}
88

 

附Demo以供测试！

谢谢大家这么长时间的支持！

下载该Demo 版本号：1.0.9719.2 证书密码：840525