一个媒体站点少不了播放Flash视频，此博文Insus.NET教你实现。
由于一个站点也许不止一个地方需要播放flash视频，为了简化代码，因此Insus.NET想把这个播放控件，写入用户控件内，在网页需要时，拉进去并给用户控件赋值即可。
建立一个用户控件SwfPlayer.ascx：
<% @ Control Language = " C# " AutoEventWireup = " true " CodeFile = " SwfPlayer.ascx.cs " Inherits = " SwfPlayer " %>
SwfPlayer.ascx.cs using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class SwfPlayer : System.Web.UI.UserControl { private string _File; private int _Width; private int _Height; // 设置Flash宽度属性 public int Width { set { _Width = value; } } // 设置Flash高度属性 public int Height { set { _Height = value; } } // Flash文件 public string File { set { _File = value; } } protected void Page_Load( object sender, EventArgs e) { } // 重新Render方法 protected override void Render(HtmlTextWriter writer) { // Flash对象 StringBuilder sb = new StringBuilder(); sb.AppendFormat( " <object classid='clsid:D27CDB6E-AE6D-11cf-96B8-444553540000' codebase='http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0'width='{0}' height='{1}'> ", _Width, _Height); sb.AppendFormat( " <param name='movie' value='{0}'> ", _File); sb.AppendFormat( " <param name='quality' value='high'> "); sb.AppendFormat( " <embed src='{0}' quality='high' pluginspage='http://www.macromedia.com/go/getflashplayer' type='application/x-shockwave-flash' width='{1}' height='{2}'></embed> ",_File,_Width,_Height); sb.Append( " </object> "); writer.Write(sb.ToString()); } }
应用这个用户控件，把它拉进网页需要的地方即可。下列html代码的第3行与第13行。
View Code 1 <% @ Page Language = " C# " AutoEventWireup = " true " CodeFile = " Default.aspx.cs " Inherits = " _Default " %> 2 3 <% @ Register Src = " SwfPlayer.ascx " TagName = " SwfPlayer " TagPrefix = " uc1 " %> 4 5 <! DOCTYPE html > 6 7 < html xmlns ="http://www.w3.org/1999/xhtml" > 8 < head runat ="server" > 9 < title ></ title > 10 </ head > 11 < body > 12 < form id ="form1" runat ="server" > 13 < uc1:SwfPlayer ID ="SwfPlayer1" runat ="server" /> 14 </ form > 15 </ body > 16 </ html >
在.cs的Page_load事件内给用户控件属性赋值：
View Code using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using Insus.NET; public partial class _Default : System.Web.UI.Page { protected void Page_Load( object sender, EventArgs e) { string file = ResolveUrl( " ~/FlashFiles/Wildlife.swf "); SwfPlayer1.Width = 400; SwfPlayer1.Height = 300; SwfPlayer1.File = file; } }
网页浏览效果：