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FileInfo.Open Method (FileMode)

When it is called by trusted applications, opens a file in the specified mode.

Namespace:  System.IO
Assembly:  mscorlib (in mscorlib.dll)

public FileStream Open(
	FileMode mode
)

Parameters

mode
Type: System.IO.FileMode
A FileMode constant specifying the mode (for example, Open or Append) in which to open the file.

Return Value

Type: System.IO.FileStream
A file opened in the specified mode, with read/write access and unshared.

ExceptionCondition
FileNotFoundException

The file is not found.

UnauthorizedAccessException

The file 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.

Platform Notes

Silverlight for Windows Phone Silverlight for Windows Phone

 This member has a SecurityCriticalAttribute attribute on Silverlight for Windows Phone, because the attribute was present in Silverlight 3. This attribute restricts this member to internal use. Application code that uses this member throws a MethodAccessException.

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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