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DirectoryInfo.Create Method

  • Reference

Definition

Namespace:
System.IO
Assemblies:
mscorlib.dll, System.IO.FileSystem.dll
Assembly:
System.IO.FileSystem.dll
Assembly:
System.Runtime.dll
Assembly:
mscorlib.dll
Assembly:
netstandard.dll

Creates a directory.

Overloads

Create()

Creates a directory.
Create(DirectorySecurity)

Creates a directory using a DirectorySecurity object.

Create()

Source:
DirectoryInfo.cs
Source:
DirectoryInfo.cs
Source:
DirectoryInfo.cs

Creates a directory.

public:
 void Create();
public void Create ();
member this.Create : unit -> unit
Public Sub Create ()

Exceptions

IOException

The directory cannot be created.

Examples

The following example checks whether a specified directory exists, creates the directory if it does not exist, and deletes the directory.

using namespace System;
using namespace System::IO;
int main()
{
   
   // Specify the directories you want to manipulate.
   DirectoryInfo^ di = gcnew DirectoryInfo( "c:\\MyDir" );
   try
   {
      
      // Determine whether the directory exists.
      if ( di->Exists )
      {
         
         // Indicate that it already exists.
         Console::WriteLine( "That path exists already." );
         return 0;
      }
      
      // Try to create the directory.
      di->Create();
      Console::WriteLine( "The directory was created successfully." );
      
      // Delete the directory.
      di->Delete();
      Console::WriteLine( "The directory was deleted successfully." );
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( "The process failed: {0}", e );
   }

}

using System;
using System.IO;

class Test
{
    public static void Main()
    {
        // Specify the directories you want to manipulate.
        DirectoryInfo di = new DirectoryInfo(@"c:\MyDir");

        try
        {
            // Determine whether the directory exists.
            if (di.Exists)
            {
                // Indicate that it already exists.
                Console.WriteLine("That path exists already.");
                return;
            }

            // Try to create the directory.
            di.Create();
            Console.WriteLine("The directory was created successfully.");

            // Delete the directory.
            di.Delete();
            Console.WriteLine("The directory was deleted successfully.");
        }
        catch (Exception e)
        {
            Console.WriteLine("The process failed: {0}", e.ToString());
        }
        finally {}
    }
}

open System.IO

// Specify the directories you want to manipulate.
let di = DirectoryInfo @"c:\MyDir"

try
    // Determine whether the directory exists.
    if di.Exists then
        // Indicate that it already exists.
        printfn "That path exists already."
    else
        // Try to create the directory.
        di.Create()
        printfn "The directory was created successfully."

        // Delete the directory.
        di.Delete()
        printfn "The directory was deleted successfully."
with e ->
    printfn $"The process failed: {e}"

Imports System.IO

Public Class Test

    Public Shared Sub Main()
        ' Specify the directories you want to manipulate.
        Dim di As DirectoryInfo = New DirectoryInfo("c:\MyDir")
        Try
            ' Determine whether the directory exists.
            If di.Exists Then
                ' Indicate that it already exists.
                Console.WriteLine("That path exists already.")
                Return
            End If

            ' Try to create the directory.
            di.Create()
            Console.WriteLine("The directory was created successfully.")

            'Delete the directory.
            di.Delete()
            Console.WriteLine("The directory was deleted successfully.")

        Catch e As Exception
            Console.WriteLine("The process failed: {0}", e.ToString())
        End Try
    End Sub
End Class

Remarks

Any and all directories specified in path are created, unless some part of path is invalid. The path parameter specifies a directory path, not a file path. If the directory already exists, this method does nothing. If the directory did not exist before calling this method, then any cached attribute information about the directory will be flushed if the creation is successful.

For a list of common I/O tasks, see Common I/O Tasks.

See also

Applies to

Create(DirectorySecurity)

Creates a directory using a DirectorySecurity object.

public:
 void Create(System::Security::AccessControl::DirectorySecurity ^ directorySecurity);
public void Create (System.Security.AccessControl.DirectorySecurity directorySecurity);
member this.Create : System.Security.AccessControl.DirectorySecurity -> unit
Public Sub Create (directorySecurity As DirectorySecurity)

Parameters

directorySecurity
DirectorySecurity

The access control to apply to the directory.

Exceptions

UnauthorizedAccessException

The caller does not have the required permission.

ArgumentException

.NET Framework and .NET Core versions older than 2.1: path is a zero-length string, contains only white space, or contains one or more invalid characters. You can query for invalid characters by using the GetInvalidPathChars() method.

ArgumentNullException

path is null.

PathTooLongException

The specified path, file name, or both exceed the system-defined maximum length.

DirectoryNotFoundException

The specified path is invalid, such as being on an unmapped drive.

NotSupportedException

Creating a directory with only the colon (:) character was attempted.

Examples

The following code example creates a new directory inside the user's temporary folder with the specified directory security attributes:

using System.IO;
using System.Security.AccessControl;
using System.Security.Principal;
namespace ConsoleApp
{
    class Program
    {
        static void Main()
        {
            DirectorySecurity security = new DirectorySecurity();
            SecurityIdentifier identity = new SecurityIdentifier(WellKnownSidType.BuiltinUsersSid, null);
            FileSystemAccessRule accessRule = new FileSystemAccessRule(identity, FileSystemRights.FullControl, AccessControlType.Allow);
            security.AddAccessRule(accessRule);
            string path = Path.Combine(Path.GetTempPath(), "directoryToCreate");
            DirectoryInfo dirInfo = new DirectoryInfo(path);
            dirInfo.Create(security);
        }
    }
}

Remarks

Use this method overload to create a directory with access control, so there is no chance the directory can be accessed before security is applied.

If the directory already exists, this method does nothing.

For a list of common I/O tasks, see Common I/O Tasks.

Important

This method was ported to .NET Core 3.1 as an extension method of the FileSystemAclExtensions class as part of the System.Security.AccessControl assembly: Create(DirectoryInfo, DirectorySecurity).

Applies to