If a folder does not exist, create it

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?

using System.IO

if (!Directory.Exists(yourDirectory))
Directory.CreateDirectory(yourDirectory);

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));
}

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);

}

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);
}

if (!Directory.Exists(Path.GetDirectoryName(fileName)))
{
Directory.CreateDirectory(Path.GetDirectoryName(fileName));
}

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);
}

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);

Use the below code as per *[How can I create a folder dynamically using the File upload server control?][1]*:

string subPath ="ImagesPath"; // Your code goes here

bool exists = System.IO.Directory.Exists(Server.MapPath(subPath));

if(!exists)
System.IO.Directory.CreateDirectory(Server.MapPath(subPath));

[1]:

[To see links please register here]

[`Directory.CreateDirectory`][2] explains how to try and to create the FilePath if it does not exist.

[`Directory.Exists`][1] explains how to check if a FilePath exists. However, you don't need this as CreateDirectory will check it for you.

[1]:

[To see links please register here]

[2]:

[To see links please register here]