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StreamWriter.Write Method (Char[], Int32, Int32)

Writes a subarray of characters to the stream.

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

public override void Write(
	char[] buffer,
	int index,
	int count
)

Parameters

buffer
Type: System.Char[]

A character array that contains the data to write.

index
Type: System.Int32

The character position in the buffer at which to start reading data.

count
Type: System.Int32

The maximum number of characters to write.

ExceptionCondition
ArgumentNullException

buffer is null.

ArgumentException

The buffer length minus index is less than count.

ArgumentOutOfRangeException

index or count is negative.

IOException

An I/O error occurs.

ObjectDisposedException

AutoFlush is true or the StreamWriter buffer is full, and current writer is closed.

NotSupportedException

AutoFlush is true or the StreamWriter buffer is full, and the contents of the buffer cannot be written to the underlying fixed size stream because the StreamWriter is at the end the stream.

This method overrides TextWriter.Write.

The characters are read from buffer beginning at index and continuing through index + (count - 1). All characters are written to the underlying stream unless the end of the underlying stream is reached prematurely. Flush is invoked automatically if AutoFlush is true.

For a list of common I/O tasks, see Common I/O Tasks.

This example writes eight characters from a 13-element array to a file, beginning at the third element of the array.

using System;
using System.IO;

public class SWBuff 
{
    public static void Main(String[] args)
    {
        FileStream sb = new FileStream("MyFile.txt", FileMode.OpenOrCreate);
        char[] b = {'a','b','c','d','e','f','g','h','i','j','k','l','m'};
        StreamWriter sw = new StreamWriter(sb);
        sw.Write(b, 3, 8);
        sw.Close();
    }
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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