How to delete a file after checking whether it exists

Question

How can I delete a file in C  e g  C  test txt  although apply the same kind of method like in batch files e g   if exist  C  test txt   delete  C  test txt   else   return nothing  ignore

User · Answer

You could import the System IO namespace using   using System IO    If the filepath represents the full path to the file  you can check its existence and delete it as follows   if File Exists filepath          try                File Delete filepath              catch Exception ex                Do something

User · Answer

This is pretty straightforward using the File class   if File Exists   C  test txt          File Delete   C  test txt         As Chris pointed out in the comments  you don t actually need to do the File Exists check since File Delete doesn t throw an exception if the file doesn t exist  although if you re using absolute paths you will need the check to make sure the entire file path is valid

User · Answer

Sometimes you want to delete a file whatever the case whatever the exception occurs  please do delete the file   For such situations   public static void DeleteFile string path                        if   File Exists path                                 return                             bool isDeleted   false              while   isDeleted                                try                                       File Delete path                       isDeleted   true                                    catch  Exception e                                                      Thread Sleep 50                             Note An exception is not thrown if the specified file does not exist

User · Answer

If you want to avoid a DirectoryNotFoundException you will need to ensure that the directory of the file does indeed exist  File Exists accomplishes this  Another way would be to utilize the Path and Directory utility classes like so   string file     C  subfolder test txt   if  Directory Exists Path GetDirectoryName file          File Delete file

User · Answer

if  System IO File Exists   C  test txt        System IO File Delete   C  test txt       but  System IO File Delete   C  test txt      will do the same as long as the folder exists

User · Answer

if  System IO File Exists   C  Users Public DeleteTest test txt                     Use a try block to catch IOExceptions  to             handle the case of the file already being             opened by another process           try                       System IO File Delete   C  Users Public DeleteTest test txt                      catch  System IO IOException e                        Console WriteLine e Message               return

User · Answer

This will be the simplest way   if  System IO File Exists filePath        System IO File Delete filePath     System Threading Thread Sleep 20       Thread sleep will help to work perfectly  otherwise  it will affect the next step if we doing copy or write the file   Another way I did is   if  System IO File Exists filePath     System GC Collect    System GC WaitForPendingFinalizers    System IO File Delete filePath

User · Answer

if  File Exists path         File Delete path

User · Answer

Use System IO File Delete like so   System IO File Delete   C  test txt    From the documentation      If the file to be deleted does not exist  no exception is thrown

User · Answer

If you are reading from that file using FileStream and then wanting to delete it  make sure you close the FileStream before you call the File Delete path   I had this issue   var filestream   new System IO FileStream   C  Test PutInv txt   System IO FileMode Open  System IO FileAccess Read  System IO FileShare ReadWrite   filestream Close    File Delete   C  Test PutInv txt

[c#] How to delete a file after checking whether it exists

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