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IsolatedStorageFile.OpenFile Method (String, FileMode)

Opens a file in the specified mode.

Namespace:  System.IO.IsolatedStorage
Assembly:  mscorlib (in mscorlib.dll)
public IsolatedStorageFileStream OpenFile(
	string path,
	FileMode mode


Type: System.String

The relative path of the file within the isolated store.

Type: System.IO.FileMode

One of the enumeration values that specifies how to open the file.

Return Value

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

The isolated store has been removed.


Isolated storage is disabled.


path is malformed.


path is null.


The directory in path does not exist.


No file was found and the mode is set to Open.


The isolated store has been disposed.

.NET Framework

Supported in: 4.5.1, 4.5, 4

.NET Framework Client Profile

Supported in: 4

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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