{"id":528,"date":"2008-01-14T13:01:04","date_gmt":"2008-01-14T05:01:04","guid":{"rendered":"http:\/\/fdream.net\/blog\/article\/528.aspx"},"modified":"2008-01-14T13:01:19","modified_gmt":"2008-01-14T05:01:19","slug":"Silverlight%e4%b8%adDownloader%e7%9a%84%e7%bc%ba%e9%99%b7%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fdream.net\/blog\/article\/528","title":{"rendered":"Silverlight\u4e2dDownloader\u7684\u7f3a\u9677\uff1f"},"content":{"rendered":"<p>\u5728\u5f02\u6b65\u52a0\u8f7d\u56fe\u7247\u7684\u65f6\u5019\u53d1\u73b0\u7684\u95ee\u9898\uff0c\u56e0\u4e3a\u8981\u52a0\u8f7d\u5f88\u591a\u4e0d\u540c\u7684\u56fe\u7247\uff0c\u6bcf\u6b21\u52a0\u8f7d\u4e00\u4e2a\u90fd\u8981new\u4e00\u4e2aDownloader\uff0c\u7ed3\u679c\u53d1\u73b0\u53e5\u67c4\u6570\u4e00\u76f4\u4e0d\u505c\u5730\u5f80\u4e0a\u5192\u3002\u540e\u6765\u5199\u4e86\u4e2a\u7b80\u5355\u7684\u6d4b\u8bd5\u7a0b\u5e8f\uff0c\u53d1\u73b0\u6bcf\u6b21new\u4e00\u4e2aDownloader\uff0c\u5c31\u4f1a\u589e\u52a0\u4e09\u4e2a\u53e5\u67c4\u5de6\u53f3\uff0c\u4f46\u5e76\u4e0d\u56de\u6536\u3002\u540e\u6765\u6539\u53d8\u4e2a\u65b9\u5f0f\uff0c\u91cd\u590d\u4f7f\u7528\u540c\u4e00\u4e2aDownloader\uff0c\u53d1\u73b0\u53e5\u67c4\u6570\u5728\u589e\u52a0\u4e00\u6b21\u540e\u5c31\u4e00\u76f4\u4e0d\u53d8\u4e86\u3002\u770b\u6765\u548c\u4ee5\u524d\u8bf4\u7684Silverlight\u5185\u5b58\u56de\u6536\u5c5e\u4e8e\u4e00\u6837\u7684\u95ee\u9898\uff0c\u73b0\u5728\u5c31\u53ea\u80fd\u4f7f\u7528\u65b9\u6cd5\u7ed5\u8fc7\u53bb\u4e86\uff0c\u5c3d\u91cf\u91cd\u590d\u4f7f\u7528Downloader\uff0c\u4e0d\u8981new\u65b0\u7684Downloader\u3002<\/p>\n<p>\u6bd4\u5982\u4f7f\u7528\u4e00\u4e2aDownloader\u6c60\uff0c\u4e00\u4e2a\u7b80\u5355\u7684Downloader 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List<Downloader> BusyDownloader = new List<Downloader>();<br \/>    \u2026\u2026<br \/>    \u2026\u2026<br \/>    private DownloaderPool()<br \/>    {<br \/>    }<\/p>\n<p>    public Downloader GetDownloader()<br \/>    {<br \/>        Downloader dler;<br \/>        if (IdleDownloader.Count > 0)<br \/>        {<br \/>            dler = IdleDownloader[0];<br \/>            IdleDownloader.Remove(dler);<br \/>            BusyDownloader.Add(dler);<br \/>        }<br \/>        else<br \/>        {<br \/>            dler = new Downloader();<br \/>            BusyDownloader.Add(dler);<br \/>        }<\/p>\n<p>        return dler;<br \/>    }<\/p>\n<p>    public void RestoreDownloader(Downloader dler)<br \/>    {<br \/>        BusyDownloader.Remove(dler);<br \/>        if (IdleDownloader.Count < 100)<br \/>        {<br \/>            IdleDownloader.Add(dler);<br \/>        }<br \/>    }<br \/>}<\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u5f02\u6b65\u52a0\u8f7d\u56fe\u7247\u7684\u65f6\u5019\u53d1\u73b0\u7684\u95ee\u9898\uff0c\u56e0\u4e3a\u8981\u52a0\u8f7d\u5f88\u591a\u4e0d\u540c\u7684\u56fe\u7247\uff0c\u6bcf\u6b21\u52a0\u8f7d\u4e00\u4e2a\u90fd\u8981new\u4e00\u4e2aDownloader\uff0c\u7ed3\u679c\u53d1\u73b0\u53e5\u67c4\u6570\u4e00\u76f4\u4e0d\u505c\u5730\u5f80\u4e0a\u5192\u3002\u540e\u6765\u5199\u4e86\u4e2a\u7b80\u5355\u7684\u6d4b\u8bd5\u7a0b\u5e8f\uff0c\u53d1\u73b0\u6bcf\u6b21new\u4e00\u4e2aDownloader\uff0c\u5c31\u4f1a\u589e\u52a0\u4e09\u4e2a\u53e5\u67c4\u5de6\u53f3\uff0c\u4f46\u5e76\u4e0d\u56de\u6536\u3002\u540e\u6765\u6539\u53d8\u4e2a\u65b9\u5f0f\uff0c\u91cd\u590d\u4f7f\u7528\u540c\u4e00\u4e2aDownloader\uff0c\u53d1\u73b0\u53e5\u67c4\u6570\u5728\u589e\u52a0\u4e00\u6b21\u540e\u5c31\u4e00\u76f4\u4e0d\u53d8\u4e86\u3002\u770b\u6765\u548c\u4ee5\u524d\u8bf4\u7684Silverlight\u5185\u5b58\u56de\u6536\u5c5e\u4e8e\u4e00\u6837\u7684\u95ee\u9898\uff0c\u73b0\u5728\u5c31\u53ea\u80fd\u4f7f\u7528\u65b9\u6cd5\u7ed5\u8fc7\u53bb\u4e86\uff0c\u5c3d\u91cf\u91cd\u590d\u4f7f\u7528Downloader\uff0c\u4e0d\u8981new\u65b0\u7684Downloader\u3002 \u6bd4\u5982\u4f7f\u7528\u4e00\u4e2aDownloader\u6c60\uff0c\u4e00\u4e2a\u7b80\u5355\u7684Downloader Pool\u5e94\u8be5\u6709\u4e24\u4e2aList\u548c\u4e24\u4e2a\u65b9\u6cd5\uff0c\u4e24\u4e2aList\u5206\u522b\u7528\u6765\u7ba1\u7406\u5de5\u4f5c\u4e2d\u7684Downloader\u548c\u7a7a\u95f2\u7684Downloader\uff0c\u4e00\u4e2a\u65b9\u6cd5\u7528\u6765\u63d0\u4f9b\u7a7a\u95f2\u7684Downloader\uff0c\u53e6\u5916\u4e00\u4e2a\u65b9\u6cd5\u7528\u6765\u56de\u6536\u5df2\u7ecf\u7528\u5b8c\u7684Downloader\u3002\u6ce8\u610f\uff0c\u82e5\u4f7f\u7528\u4e0b\u9762\u7684\u8fd9\u79cd\u4ee3\u7801\uff0c\u9700\u8981\u5728\u56de\u6536Downloader\u65f6\u540c\u65f6\u53bb\u6389Downloader\u4e0a\u6240\u9644\u52a0\u7684\u6258\u7ba1\u4e8b\u4ef6\uff08\u4f7f\u7528\u201c-=\u201d\u64cd\u4f5c\u7b26\uff09\uff0c\u4f60\u4e5f\u53ef\u4ee5\u628aDownloader\u7684\u4e8b\u4ef6\u5c01\u88c5\u5728\u8fd9\u4e2aDownloader Pool\u7c7b\u91cc\u9762~ public class DownloaderPool{ \u2026\u2026 \u2026\u2026 private List IdleDownloader = new List(); private List BusyDownloader = new List(); \u2026\u2026 \u2026\u2026 private DownloaderPool() { } public Downloader GetDownloader() { Downloader dler; if (IdleDownloader.Count > 0) { dler = IdleDownloader[0]; IdleDownloader.Remove(dler); BusyDownloader.Add(dler); } else { dler = new Downloader(); BusyDownloader.Add(dler); } return dler; } &hellip; 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