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

Reads a block of characters from the input string and advances the character position by count.

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

public override int Read (
	[InAttribute] [OutAttribute] char[] buffer,
	int index,
	int count
)
public int Read (
	/** @attribute InAttribute() */ /** @attribute OutAttribute() */ char[] buffer, 
	int index, 
	int count
)
public override function Read (
	buffer : char[], 
	index : int, 
	count : int
) : int

Parameters

buffer

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

The starting index in the buffer.

count

The number of characters to read.

Return Value

The total number of characters read into the buffer. This can be less than the number of characters requested if that many characters are not currently available, or zero if the end of the underlying string has been reached.

Exception typeCondition

ArgumentNullException

buffer is a null reference (Nothing in Visual Basic).

ArgumentException

The buffer length minus index is less than count.

ArgumentOutOfRangeException

index or count is negative.

ObjectDisposedException

The current reader is closed.

This method overrides TextReader.Read.

The method will read up to count characters from the StringReader into the buffer character array starting at position index. Returns the actual number of characters read, or zero if the end of the string has been reached and no characters are read.

The following table lists examples of other typical or related I/O tasks.

To do this...

See the example in this topic...

Create a text file.

How to: Write Text to a File

Write to a text file.

How to: Write Text to a File

Read from a text file.

How to: Read Text from a File

Append text to a file.

How to: Open and Append to a Log File

File.AppendText

FileInfo.AppendText

Get the size of a file.

FileInfo.Length

Get the attributes of a file.

File.GetAttributes

Set the attributes of a file.

File.SetAttributes

Determine if a file exists.

File.Exists

Read from a binary file.

How to: Read and Write to a Newly Created Data File

Write to a binary file.

How to: Read and Write to a Newly Created Data File

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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