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XmlWriter.WriteChars Method

When overridden in a derived class, writes text one buffer at a time.

Namespace:  System.Xml
Assembly:  System.Xml (in System.Xml.dll)

public abstract void WriteChars(
	char[] buffer,
	int index,
	int count


Type: System.Char[]

Character array containing the text to write.

Type: System.Int32

The position in the buffer indicating the start of the text to write.

Type: System.Int32

The number of characters to write.


buffer is null.


index or count is less than zero.


The buffer length minus index is less than count; the call results in surrogate pair characters being split or an invalid surrogate pair being written.


The buffer parameter value is not valid.

This method can be used to write large amounts of text one buffer at a time.

Special handling must be done to ensure the WriteChars method does not split surrogate pair characters across multiple buffer writes. The XML specification defines the valid ranges for surrogate pairs.

An exception is thrown if surrogate pair characters are written that would result in the surrogate pair characters being split in the buffer.

			using (XmlWriter writer = XmlWriter.Create("WriteChars.xml"))

				char[] ch = new char[4];
				ch[0] = 't';
				ch[1] = 'e';
				ch[2] = 'x';
				ch[3] = 't';

				writer.WriteChars(ch, 0, ch.Length);

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0