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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
)

Parameters

buffer
Type: System.Char[]

Character array containing the text to write.

index
Type: System.Int32

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

count
Type: System.Int32

The number of characters to write.

ExceptionCondition
ArgumentNullException

buffer is null.

ArgumentOutOfRangeException

index or count is less than zero.

-or-

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.

ArgumentException

The buffer parameter value is not valid.

InvalidOperationException

An XmlWriter method was called before a previous asynchronous operation finished. In this case, InvalidOperationException is thrown with the message “An asynchronous operation is already in progress.”

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.

For the asynchronous version of this method, see WriteCharsAsync.

			using (XmlWriter writer = XmlWriter.Create("WriteChars.xml"))
			{
				writer.WriteStartDocument();

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

				writer.WriteStartElement("WriteCharacters");
				writer.WriteChars(ch, 0, ch.Length);
				writer.WriteEndElement();
				writer.WriteEndDocument();
			}

.NET Framework

Supported in: 4.5.2, 4.5.1, 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

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

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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