OpenFileDialog.OpenFile Method

Opens a read-only stream for the file that is selected by the user using OpenFileDialog.

Namespace:  Microsoft.Win32
Assembly:  PresentationFramework (in PresentationFramework.dll)

public Stream OpenFile()

Return Value

Type: System.IO.Stream
A new Stream that contains the selected file.

ExceptionCondition
InvalidOperationException

No files were selected in the dialog.

The file is opened with read-only permission (Open, Read, and Read), whether or not the Read Only checkbox is checked in the dialog. Because the file is opened without the ability to overwrite or write to the file, an application can safely load a file while executing within partial trust restrictions.

If more than one file is selected, the first selected file is opened.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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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