XmlWriter.WriteDocType Method

When overridden in a derived class, writes the DOCTYPE declaration with the specified name and optional attributes.

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

public abstract void WriteDocType(
	string name,
	string pubid,
	string sysid,
	string subset


Type: System.String
The name of the DOCTYPE. This must be non-empty.
Type: System.String
If non-null it also writes PUBLIC "pubid" "sysid" where pubid and sysid are replaced with the value of the given arguments.
Type: System.String
If pubid is null and sysid is non-null it writes SYSTEM "sysid" where sysid is replaced with the value of this argument.
Type: System.String
If non-null it writes [subset] where subset is replaced with the value of this argument.


This method was called outside the prolog (after the root element).


The value for name would result in invalid XML.


name is not valid.


The name, pubid, sysid, or subset parameter is null.

This method does not check for invalid characters in pubid, sysid or subset. It also does not check that the internal subset is well-formed.

Security noteSecurity Note:

The XmlWriter does not validate the data that is passed to the WriteDocType method. You should not pass arbitrary data to this method.


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.