Directory.CreateDirectory Method (String)
Creates all directories and subdirectories in the specified path unless they already exist.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- path
-
Type:
System.String
The directory to create.
Return Value
Type: System.IO.DirectoryInfoAn object that represents the directory at the specified path. This object is returned regardless of whether a directory at the specified path already exists.
| Exception | Condition |
|---|---|
| IOException | The directory specified by path is a file. -or- The network name is not known. |
| UnauthorizedAccessException | The caller does not have the required permission. |
| ArgumentException | 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. -or- path is prefixed with, or contains, only a colon character (:). |
| ArgumentNullException | path is null. |
| PathTooLongException | The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters and file names must be less than 260 characters. |
| DirectoryNotFoundException | The specified path is invalid (for example, it is on an unmapped drive). |
| NotSupportedException | path contains a colon character (:) that is not part of a drive label ("C:\"). |
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.
The path parameter specifies a directory path, not a file path.
Trailing spaces are removed from the end of the path parameter before creating the directory.
You can create a directory on a remote computer, on a share that you have write access to. UNC paths are supported; for example, you can specify the following for path: \\2009\Archives\December in Visual Basic, and \\\\2009\\Archives\\December in C#.
Creating a directory with only the colon character (:) is not supported, and will cause a NotSupportedException to be thrown.
The following example creates and deletes the specified directory.
To create the directory C:\Users\User1\Public\Html when the current directory is C:\Users\User1, use any of the following calls to ensure that the backslash is interpreted properly.
In Visual Basic:
Directory.CreateDirectory("Public\Html")
Directory.CreateDirectory("\Users\User1\Public\Html")
Directory.CreateDirectory("c:\Users\User1\Public\Html")
In C#:
Directory.CreateDirectory("Public\\Html");
Directory.CreateDirectory("\\Users\\User1\\Public\\Html");
Directory.CreateDirectory("c:\\Users\\User1\\Public\\Html");
In C++:
Directory::CreateDirectory("Public\\Html");
Directory::CreateDirectory("\\Users\\User1\\Public\\Html");
Directory::CreateDirectory("c:\\Users\\User1\\Public\\Html");
for reading and writing files or directories. Associated enumerations: FileIOPermissionAccess.Read, FileIOPermissionAccess.Write
Available since 10
.NET Framework
Available since 1.1
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0