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XmlWriter.WriteAttributeString Method (String, String, String)

When overridden in a derived class, writes an attribute with the specified local name, namespace URI, and value.

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

public void WriteAttributeString(
	string localName,
	string ns,
	string value
)

Parameters

localName
Type: System.String
The local name of the attribute.
ns
Type: System.String
The namespace URI to associate with the attribute.
value
Type: System.String
The value of the attribute.

ExceptionCondition
InvalidOperationException

The state of writer is not WriteState.Element or writer is closed.

ArgumentException

The xml:space or xml:lang attribute value is invalid.

This method writes out the attribute with a user defined namespace prefix and associates it with the given namespace. If localName is "xmlns" then this method also treats this as a namespace declaration. In this case, the ns argument can be null.

WriteAttributeString does the following:

  • If the attribute value includes double or single quotes, they are replaced with " and ' respectively.

  • If writing an xml:space attribute, the writer verifies the attribute value is valid. (Valid values are preserve or default.)

  • If writing an xml:lang attribute, the writer does not verify that the attribute value is valid according to the W3C XML 1.0 recommendation.

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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