If a folder does not exist create it

Question

I use a FileUploader control in my application  I want to save a file to a specified folder  If this folder does not exist  I want to first create it  and then save my file to this folder   If the folder already exists  then just save the file in it  How can I do this

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Create a new folder  given a parent folder s path          string pathToNewFolder   System IO Path Combine parentFolderPath   quot NewSubFolder quot            DirectoryInfo directory   Directory CreateDirectory pathToNewFolder              Will create if does not already exist  otherwise will ignore    path to new folder given directory information variable so you can continue to manipulate it as you please

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if   Directory Exists Path GetDirectoryName fileName          Directory CreateDirectory Path GetDirectoryName fileName

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Use the below code as per How can I create a folder dynamically using the File upload server control   string subPath   quot ImagesPath quot      Your code goes here  bool exists   System IO Directory Exists Server MapPath subPath     if  exists      System IO Directory CreateDirectory Server MapPath subPath

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Derived combined from multiple answers  implementing it for me was as easy as this   public void Init         String platypusDir     C  platypus       CreateDirectoryIfDoesNotExist platypusDir      private void CreateDirectoryIfDoesNotExist string dirName        System IO Directory CreateDirectory dirName

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Use the below code  I use this code for file copy and creating a new folder  string fileToCopy    quot filelocation  file name txt quot   String server   Environment UserName  string newLocation    quot C   Users   quot    server    quot   Pictures  Tenders  file name txt quot   string folderLocation    quot C   Users   quot    server    quot   Pictures  Tenders   quot   bool exists   System IO Directory Exists folderLocation    if   exists       System IO Directory CreateDirectory folderLocation      if  System IO File Exists fileToCopy             MessageBox Show  quot file copied quot         System IO File Copy fileToCopy  newLocation  true           else            MessageBox Show  quot no such files quot

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A fancy way is to extend the FileUpload with the method you want    Add this   public static class FileUploadExtension       public static void SaveAs this FileUpload  string destination  bool autoCreateDirectory              if  autoCreateDirectory                        var destinationDirectory   new DirectoryInfo Path GetDirectoryName destination                 if   destinationDirectory Exists                  destinationDirectory Create                       file SaveAs destination             Then use it   FileUpload file      file SaveAs path true

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using System IO  if   Directory Exists yourDirectory       Directory CreateDirectory yourDirectory

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Just write this line  System IO Directory CreateDirectory  quot my folder quot      If the folder does not exist yet  it will be created  If the folder exists already  the line will be ignored   Reference  Article about Directory CreateDirectory at MSDN Of course  you can also write using System IO  at the top of the source file and then just write Directory CreateDirectory  quot my folder quot    every time you want to create a folder

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Use this code if the folder is not presented under the image folder or other folders string subPath   HttpContext Current Server MapPath   quot   Images RequisitionBarCode  quot     bool exists   System IO Directory Exists subPath   if  exists      System IO Directory CreateDirectory subPath    string path   HttpContext Current Server MapPath   quot   Images RequisitionBarCode  quot    OrderId    quot  png quot

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string root     C  Temp    string subdir     C  Temp Mahesh       If directory does not exist  create it   if   Directory Exists root      Directory CreateDirectory root        The CreateDirectory is also used to create a sub directory  All you have to do is to specify the path of the directory in which this subdirectory will be created in  The following code snippet creates a Mahesh subdirectory in C  Temp directory      Create sub directory  if   Directory Exists subdir      Directory CreateDirectory subdir

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This method will create the folder if it does not exist and do nothing if it exists  Directory CreateDirectory path

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Directory CreateDirectory explains how to try and to create the FilePath if it does not exist  Directory Exists explains how to check if a FilePath exists  However  you don t need this as CreateDirectory will check it for you

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The following code is the best line s  of code I use that will create the directory if not present  System IO Directory CreateDirectory HttpContext Current Server MapPath  quot   temp  quot      If the directory already exists  this method does not create a new directory  but it returns a DirectoryInfo object for the existing directory   gt

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You can use a try catch clause and check to see if it exist     try         if   Directory Exists path                   Try to create the directory         DirectoryInfo di   Directory CreateDirectory path               catch  IOException ioex           Console WriteLine ioex Message

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As others have said  use System IO Directory CreateDirectory  But  you don t need to check if it exists first  From the documentation   Any and all directories specified in path are created  unless they already exist or unless some part of path is invalid  If the directory already exists  this method does not create a new directory  but it returns a DirectoryInfo object for the existing directory

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You can create the path if it doesn t exist yet with a method like the following   using System IO   private void CreateIfMissing string path      bool folderExists   Directory Exists Server MapPath path      if   folderExists      Directory CreateDirectory Server MapPath path

[c#] If a folder does not exist, create it

Create a new folder, given a parent folder's path:

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