asp.net flash tag cloud实现

asp.net flash tag cloud实现 

1。如何使用？

源码可以在：http://xuqianghit.download.csdn.net/下载得到。前台使用方法很简单，这里直接贴上代码：

<%@ Register assembly="wpCumulus" namespace="wpCumulus" tagprefix="cc1" %> <cc1:WPCumulus ID="WPCumulus1" runat="server" DataCountField="Count" DataTextField="Text" DataUrlField="Link" Width="400" Height="400" BackColor="#CCCCCC" HiColor="#66FF33" TagColor1="Red" TagColor2="Blue" Distr="True" />

protected void Page_Load(object sender, EventArgs e) { WPCumulus1.DataSource = new[] { new {Text = "Silverlight", Count = 10, Link="/Tags/Silverlight" }, new {Text = "IIS 7", Count = 11, Link="http://iis.net" }, new {Text = "IE 8", Count = 12, Link="/Tags/IE8" }, new {Text = "C#", Count = 13, Link="/Tags/C#" }, new {Text = "Azure", Count = 13, Link="?Tag=Azure" }, new {Text = "Google", Count = 10, Link="http://www.google.com"} }; WPCumulus1.DataBind(); }

前台直接引用这个控件，但是注意需要添加：<%@ Register assembly="wpCumulus" namespace="wpCumulus" tagprefix="cc1" %>，后台代码实际上应该是从数据库中读取数据，然后绑定，这里并没有这么做。如果想要使用数据库中的数据可以参考下面的代码：

protected void Page_Load(object sender, EventArgs e) { string connectionString = ConfigurationManager.ConnectionStrings["TagCloudsConnectionString"].ConnectionString; SqlConnection conn = new SqlConnection(); conn.ConnectionString = connectionString; SqlCommand cmd = new SqlCommand(); cmd.Connection = conn; cmd.CommandType = CommandType.Text; string sql = "SELECT * FROM T_TagClouds"; cmd.CommandText = sql; SqlDataReader reader = null; Tag tag = new Tag(); ArrayList dataSource = new ArrayList(); try { conn.Open(); reader = cmd.ExecuteReader(); // Bind the data // Text -- Count -- Link while (reader.Read()) { tag.Text = reader.GetString(0); tag.Count = reader.GetInt32(1); tag.Link = reader.GetString(2); dataSource.Add(new { Text = tag.Text, Count = tag.Count, Link = tag.Link } ); } WPCumulus1.DataSource = dataSource; WPCumulus1.DataBind(); } catch (System.Exception ex) { } finally { conn.Close(); } }

2.下面是源代码的分析

源文件的目录结构如下：

未完，待续。。。