Enum AccessModes

Namespace

Microsoft.WindowsAPICodePack.Shell

Assembly

Microsoft.WindowsAPICodePack.Shell.dll

The STGM constants are flags that indicate conditions for creating and deleting the object and access modes for the object.

You can combine these flags, but you can only choose one flag from each group of related flags. Typically one flag from each of the access and sharing groups must be specified for all functions and methods which use these constants.

[Flags]
public enum AccessModes

Fields

Convert = 131072

Creates the new object while preserving existing data in a stream named "Contents".

Create = 4096

Indicates that an existing storage object or stream should be removed before the new object replaces it.

DeleteOnRelease = 67108864

Indicates that the underlying file is to be automatically destroyed when the root storage object is released. This feature is most useful for creating temporary files.

Direct = 0

Indicates that, in direct mode, each change to a storage or stream element is written as it occurs.

DirectSingleWriterMultipleReader = 4194304

Supports direct mode for single-writer, multireader file operations.

FailIfThere = 0

Causes the create operation to fail if an existing object with the specified name exists.

NoScratch = 1048576

Indicates that, in transacted mode, a temporary scratch file is usually used to save modifications until the Commit method is called. Specifying NoScratch permits the unused portion of the original file to be used as work space instead of creating a new file for that purpose.

NoSnapshot = 2097152

This flag is used when opening a storage object with Transacted and without ShareExclusive or ShareDenyWrite. In this case, specifying NoSnapshot prevents the system-provided implementation from creating a snapshot copy of the file. Instead, changes to the file are written to the end of the file.

Priority = 262144

Opens the storage object with exclusive access to the most recently committed version.

Read = 0

Indicates that the object is read-only, meaning that modifications cannot be made.

ReadWrite = 2

Enables access and modification of object data.

ShareDenyNone = 64

Specifies that subsequent openings of the object are not denied read or write access.

ShareDenyRead = ShareExclusive | ShareDenyWrite

Prevents others from subsequently opening the object in Read mode.

ShareDenyWrite = 32

Prevents others from subsequently opening the object for Write or ReadWrite access.

ShareExclusive = 16

Prevents others from subsequently opening the object in any mode.

Simple = 134217728

Provides a faster implementation of a compound file in a limited, but frequently used, case.

Transacted = 65536

Indicates that, in transacted mode, changes are buffered and written only if an explicit commit operation is called.

Write = 1

Enables you to save changes to the object, but does not permit access to its data.