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LogStore Constructor (String, FileMode, FileAccess)

Initializes a new instance of the LogStore class with the specified path, mode, and access.

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

public LogStore(
	string path,
	FileMode mode,
	FileAccess access


Type: System.String

A relative or absolute path for the base file of the log store to open.

Type: System.IO.FileMode

One of the FileMode values that determines how to open or create the store.

Type: System.IO.FileAccess

One of the FileAccess values that determines how the file can be accessed by the LogStore.


path is null.


path is an empty string ("").


path contains only white space.


path contains one or more invalid characters.


mode contains an invalid value.


access contains an invalid value.


The file cannot be found.


An I/O error occurs when opening the log store.


Access for the specified log store is denied by the operating system.


LogStore cannot be used because the required Common Log File System (CLFS) component is not installed. Install the CLFS component if it is available for your platform or use the FileRecordSequence class instead.


There is not enough memory to continue the execution of a program.

Use this constructor to open a new log store with the specified path, mode, and access. The store is opened sharing read access.

The path parameter should use the following syntax:

log:<physical log name>[::<log client name>]

where <physical log name> is a valid path to a log file, and <log client name> is a unique client identifier. A log store should be either a physical log store or a virtual log store, but not both. Once a log store has been created physically or virtually, it remains so for its lifetime. A physical log store is created by specifying only the physical log name. A virtual log store is created by specifying both the physical log name and the log client name.

Clients that share the same physical log name share the same extents collection and policy.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4

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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