Regularly Delete temporary files generated by the server

Some temporary files are often generated during import and export. We usually create a temporary folder to store these temporary files,

However, these temporary files will increase over time, so it is necessary to clear them regularly.

The idea is relatively simple. First, create a timer, which regularly executes a method to delete temporary files.

Create a timer in global. asax and call the delete temporary file method in the deltempfile custom class.

View code

1 system. Timers. Timer _ deletetempfile;
2
3 void application_start (Object sender, eventargs E)
4 {
5 // code that runs when the application starts
6 _ deletetempfile = new system. Timers. Timer (1000*60*1 );
7 _ deletetempfile. elapsed + = new system. Timers. elapsedeventhandler (ontimeevent_deltempfile );
8 _ deletetempfile. Enabled = true;
9
10}
11
12 Void ontimeevent_deltempfile (Object sender, system. Timers. elapsedeventargs E)
13 {
14 deltempfile. delete_tempfile (appdomain. currentdomain. basedirectory + "temp_down", 0 ,"*");
15 _ deletetempfile. interval = 1000*60*5;
16 _ deletetempfile. Enabled = true;
17}

To delete a temporary file in a custom class, the Code is as follows:

View code

1 /// <summary>
2 // Delete temporary files
3 /// </Summary>
4 /// <Param name = "path"> path of the deleted file </param>
5 // <Param name = "date"> delete a file before a certain time point </param>
6 /// <Param name = "filetype"> file type </param>
7 public static void delete_tempfile (string path, int datepoint, string filetype)
8 {
9 system. Io. directoryinfo dirinfo = new system. Io. directoryinfo (PATH );
10 datetime time = datetime. Now. adddays (-datepoint );
11
12 // delete a temporary file that exists in the directory
13 if (dirinfo. exists & dirinfo. getfiles (). length> 0)
14 {
15 system. Io. fileinfo [] files = dirinfo. getfiles ();
16
17 For (INT I = 0; I <files. length; I ++)
18 {
19 if (files [I]. exists)
20 {
21 try
22 {
23 if (filetype = "*")
24 {
25 // set this file as a temporary file
26 system. Io. file. setattributes (path + "\" + files [I]. Name, system. Io. fileattributes. Temporary );
27 // Delete the specified object
28 system. Io. file. Delete (path + "\" + files [I]. Name );
29}
30 else
31 {
32 If (files [I]. extension. Equals ("." + filetype ))
33 {
34 // set this file as a temporary file
35 system. Io. file. setattributes (path + "\" + files [I]. Name, system. Io. fileattributes. Temporary );
36 // Delete the specified object
37 system. Io. file. Delete (path + "\" + files [I]. Name );
38}
39 else
40 {
41 continue;
42}
43}
44}
45 catch (system. Io. ioexception ex)
46 {
47 throw ex;
48}
49}
50}
51}
52}

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