ASP.NET播放Flash(.SWF)视频

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mb5fdb13b347132 2012-10-23 17:07:00

文章标签 Flash UserControl Swf HtmlTextWriter StringBuilder 文章分类 JavaScript 前端开发

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:

ASP.NET播放Flash(.SWF)视频_HtmlTextWriter_02

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：