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WriteChars Method

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.

IndexOutOfRangeException

index is outside the bounds of the buffer.

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.


				StringBuilder output = new StringBuilder();

				// Output to StringBuilder
				using (XmlWriter writer = XmlWriter.Create(output))
				{
					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();
				}
                OutputTextBlock.Text = output.ToString();


Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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