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TextFieldParser Constructor (Stream, Encoding, Boolean, Boolean)

Initializes a new instance of the TextFieldParser class.

Namespace:  Microsoft.VisualBasic.FileIO
Assembly:  Microsoft.VisualBasic (in Microsoft.VisualBasic.dll)

public TextFieldParser(
	Stream stream,
	Encoding defaultEncoding,
	bool detectEncoding,
	bool leaveOpen


Type: System.IO.Stream
Stream. The stream to be parsed.
Type: System.Text.Encoding
Encoding. The character encoding to use if encoding is not determined from file. Default is UTF8.
Type: System.Boolean
Boolean. Indicates whether to look for byte order marks at the beginning of the file. Default is True.
Type: System.Boolean
Boolean. Indicates whether to leave stream open when the TextFieldParser object is closed. Default is False.


stream or defaultEncoding is Nothing.


stream cannot be read from.

Creates a new TextFieldParser object to parse the file or stream that is represented by the stream parameter.

If the detectEncoding parameter is True, this constructor attempts to detect the encoding by looking at the first three bytes of the file or stream. It automatically recognizes UTF-8, little-endian Unicode, and big-endian Unicode text if the file starts with the appropriate byte-order marks. Otherwise, the encoding specified by defaultEncoding is used.

Caution noteCaution

When you compile a set of characters with a particular cultural setting and retrieve those same characters with a different cultural setting, the characters might not be interpretable and could cause an exception to be thrown.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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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