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TextReader.Read Method (Char[], Int32, Int32)

May 02, 2013

Reads a maximum of count characters from the current stream and writes the data to buffer, beginning at index.

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

public virtual int Read(
	char[] buffer,
	int index,
	int count
)

Parameters

buffer: Type: System.Char []
When this method returns, contains the specified character array with the values between index and (index + count - 1) replaced by the characters read from the current source.

index: Type: System.Int32
The place in buffer at which to begin writing.

count: Type: System.Int32
The maximum number of characters to read. If the end of the stream is reached before count of characters is read into buffer, the current method returns.

Return Value

Type: System.Int32
The number of characters that have been read. The number will be less than or equal to count, depending on whether the data is available within the stream. This method returns zero if called when no more characters are left to read.

Exceptions

Exception	Condition
ArgumentNullException	buffer is null.
ArgumentException	The buffer length minus index is less than count.
ArgumentOutOfRangeException	index or count is negative.
ObjectDisposedException	The TextReader is closed.
IOException	An I/O error occurs.

Remarks

This method returns after either count characters are read or the end of the file is reached. ReadBlock is a blocking version of this method.

Version Information

Windows Phone OS

Supported in: 8.0, 7.1, 7.0

Platforms

Windows Phone

Reference

TextReader Class

Read Overload

System.IO Namespace

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