StreamReader Constructor (String, Encoding)

StreamReader Constructor (String, Encoding)

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Initializes a new instance of the StreamReader class for the specified file name, using the specified character encoding.

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

public StreamReader(
	string path,
	Encoding encoding
)

Parameters

path
Type: System.String
The complete file path to be read.
encoding
Type: System.Text.Encoding
The character encoding to use.

ExceptionCondition
ArgumentException

path is an empty string ("").

ArgumentNullException

path or encoding is null.

FileNotFoundException

The file cannot be found.

DirectoryNotFoundException

The specified path is invalid; for example, it might refer to an unmapped drive.

NotSupportedException

path includes an incorrect or invalid syntax for file name, directory name, or volume label.

This constructor initializes the encoding as specified by the encoding parameter, and the internal buffer to the default size. The StreamReader object attempts to detect the encoding by looking at the first three bytes of the 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 user-provided encoding is used. See the Encoding.GetPreamble method for more information.

The path parameter can be a file name, including a file on a Universal Naming Convention (UNC) share.

The path parameter is not required to be a file stored on disk; it can be any part of a system that supports access using streams.

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.

Version Notes

Windows Phone

 This member has a SecurityCriticalAttribute attribute. This attribute restricts this member to internal use. Application code that uses this member throws a MethodAccessException.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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