Parameters

path

A string that specifies the complete file path to write to. [Edit]

append

A bool value that determines whether data is to be appended to the file. If the file exists and append is false, the file is overwritten. If the file exists and append is true, the data is appended to the file. Otherwise, a new file is created. [Edit]

Permissions

Type	Reason
System.Security.Permissions.FileIOPermission [Edit]	Requires permission for reading and writing files. See System.Security.Permissions.FileIOPermissionAccess.Read, System.Security.Permissions.FileIOPermissionAccess.Write

Exceptions

Type	Reason
System.IO.IOException	A general I/O exception occurs, such as trying to access a CD-ROM drive whose tray is open [Edit]
System.IO.DirectoryNotFoundException	The directory information specified in path was not found. [Edit]
UnauthorizedAccessException	Access to path is denied. The caller does not have the required permission. [Edit]
ArgumentException	path is a zero-length string, contains only white space, or contains one or more implementation-specific invalid characters. [Edit]
ArgumentNullException	path is null. [Edit]
System.Security.SecurityException	The caller does not have the required permission. [Edit]
System.IO.NotSupportedException	path is in an implementation-specific invalid format. [Edit]
System.IO.PathTooLongException	The length of path or the absolute path information for path exceeds the implementation-specific maximum length. [Edit]

Remarks

This constructor initializes the StreamWriter.Encoding property to System.Text.UTF8Encoding whose System.Text.Encoding.GetPreamble method returns an empty byte array. For additional information, see TextWriter.Encoding .

If the specified file exists, it can be either overwritten or appended to. If the file does not exist, this constructor creates a new file.

Note:

path is not required to be a file stored on disk; it can be any part of a system that supports access via streams. For example, depending on the system, this class might be able to access a physical device.

For information on the valid format and characters for path strings, see System.IO.Path .

The default buffer size can typically be around 4 KB.

[Edit]

Requirements

Namespace: System.IO
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0