C # Create a connection through HttpWebRequest to get the file size determine whether a file of the HTTP type exists

1  Public voidDisposereportdata (synfileinfo Item)2         {3Mreport report =Newmreport ();4Report. File name =item. DocName;5Report. URL =item. Downpath;6HttpWebRequest request =NULL;7HttpWebResponse response =NULL;8             Try9             {TenRequest = WebRequest.Create (item. Downpath) asHttpWebRequest; OneRequest. Proxy =NULL;//do not use proxies. The default proxy in NET4.0 is turned on ARequest. KeepAlive =false;//do not establish a persistent connection -Request. Timeout = the;//time-out for connection URLs -Request. Readwritetimeout = the;//time-out for reading URL content theResponse = Request. GetResponse () asHttpWebResponse; -                 LongLength =Response. ContentLength; -                 stringSize = fileoperate.getautosizestring (length,2); -report. Size =size; +Report. Connection Status ="effective"; -             } +             Catch(WebException webEx) A             { atreport. Size ="0 MB"; -Report. Connection Status ="Invalid"; -Console.WriteLine ("The requested file does not exist!"+webex.message); -             } -             finally -             { in                 Lock(Configreader.reportdata) -                 { to CONFIGREADER.REPORTDATA.ADD (report); +                 } -                 if(Response! =NULL) the                 { *Response. Close ();//Close Connection $                 }Panax Notoginseng                 if(Request! =NULL) -                 { theRequest. Abort ();//Abort Request +                 } ARequest =NULL; theResponse =NULL; +System.GC.Collect ();//force garbage Collection, and release resources -  $             } $}

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WebRequest Multithreading Timeout problem

System.Net.ServicePointManager.DefaultConnectionLimit = ; the maximum number of concurrent,. NET default concurrency is only 2

C # Create a connection through HttpWebRequest to get the file size determine whether a file of the HTTP type exists