FileInfo.Open Method (FileMode, FileAccess)
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Opens a file in the specified mode with read, write, or read/write access.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- mode
- Type: System.IO.FileMode
A FileMode constant specifying the mode (for example, Open or Append) in which to open the file.
- access
- Type: System.IO.FileAccess
A FileAccess constant specifying whether to open the file with Read, Write, or ReadWrite file access.
Return Value
Type: System.IO.FileStreamA FileStream object opened in the specified mode and access, and unshared.
| Exception | Condition |
|---|---|
| SecurityException | The caller does not have the required permission. |
| ArgumentException | path is empty or contains only white spaces. |
| FileNotFoundException | The file is not found. |
| ArgumentNullException | One or more arguments is null. |
| UnauthorizedAccessException | path is read-only or is a directory. |
| DirectoryNotFoundException | The specified path is invalid, such as being on an unmapped drive. |
| IOException | The file is already open. |
Version Notes
Windows Phone
This member has a SecurityCriticalAttribute attribute. This attribute restricts this member to internal use. Application code that uses this member throws a MethodAccessException.