{"id":474,"date":"2006-08-14T20:51:00","date_gmt":"2006-08-14T20:51:00","guid":{"rendered":"http:\/\/www.sincebirth.cn\/?p=474"},"modified":"2006-08-14T20:51:00","modified_gmt":"2006-08-14T20:51:00","slug":"net%e6%96%87%e4%bb%b6%e4%b8%8a%e4%bc%a0%e4%bb%a3%e7%a0%81%e5%ae%9e%e4%be%8b","status":"publish","type":"post","link":"https:\/\/sincebirth.space\/?p=474","title":{"rendered":".net\u6587\u4ef6\u4e0a\u4f20\u4ee3\u7801\u5b9e\u4f8b"},"content":{"rendered":"<div id=\"blog_text\" class=\"cnt\">\n<p >&lt;%@&nbsp;Import&nbsp;Namespace=&#8221;System.IO&#8221;&nbsp;%&gt;<br \/>&lt;%@&nbsp;page&nbsp;Language=&#8221;C#&#8221;&nbsp;debug=&#8221;true&#8221;&nbsp;%&gt;<br \/>&lt;html&gt;<br \/>&lt;head&gt;<br \/>&lt;title&gt;\u4e0a\u4f20\u6587\u4ef6&nbsp;,&nbsp;http:\/\/www.chinabs.net&nbsp;&lt;\/title&gt;<br \/>&lt;script&nbsp;language=&#8221;C#&#8221;&nbsp;runat=&#8221;server&#8221;&gt;<br \/>&nbsp;\/\/This&nbsp;method&nbsp;is&nbsp;called&nbsp;when&nbsp;the&nbsp;&#8220;upload&#8221;&nbsp;button&nbsp;id&nbsp;pressed<br \/>&nbsp;public&nbsp;void&nbsp;UploadFile(object&nbsp;sender&nbsp;,&nbsp;EventArgs&nbsp;E)<br \/>&nbsp;{<br \/>&nbsp;&nbsp;&nbsp;\/\/\u68c0\u67e5\u4e0a\u4f20\u6587\u4ef6\u4e0d\u4e3a\u7a7a<br \/>&nbsp;&nbsp;&nbsp;if(myFile.PostedFile!=null)<br \/>&nbsp;&nbsp;&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br \/>&nbsp;&nbsp;string&nbsp;nam&nbsp;=&nbsp;myFile.PostedFile.FileName&nbsp;;<br \/>&nbsp;&nbsp;\/\/\u53d6\u5f97\u6587\u4ef6\u540d(\u62b1\u62ec\u8def\u5f84)\u91cc\u6700\u540e\u4e00\u4e2a&#8221;.&#8221;\u7684\u7d22\u5f15<br \/>&nbsp;&nbsp;int&nbsp;i=&nbsp;nam.LastIndexOf(&#8220;.&#8221;);<br \/>&nbsp;&nbsp;\/\/\u53d6\u5f97\u6587\u4ef6\u6269\u5c55\u540d<br \/>&nbsp;&nbsp;string&nbsp;newext&nbsp;=nam.Substring(i);<br 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