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XDocumentType.xml
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XDocumentType.xml
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<Type Name="XDocumentType" FullName="System.Xml.Linq.XDocumentType">
<TypeSignature Language="C#" Value="public class XDocumentType : System.Xml.Linq.XNode" />
<TypeSignature Language="ILAsm" Value=".class public auto ansi beforefieldinit XDocumentType extends System.Xml.Linq.XNode" />
<TypeSignature Language="DocId" Value="T:System.Xml.Linq.XDocumentType" />
<TypeSignature Language="VB.NET" Value="Public Class XDocumentType
Inherits XNode" />
<TypeSignature Language="F#" Value="type XDocumentType = class
 inherit XNode" />
<TypeSignature Language="C++ CLI" Value="public ref class XDocumentType : System::Xml::Linq::XNode" />
<AssemblyInfo>
<AssemblyName>System.Xml.XDocument</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.10.0</AssemblyVersion>
<AssemblyVersion>4.1.0.0</AssemblyVersion>
<AssemblyVersion>4.1.1.0</AssemblyVersion>
<AssemblyVersion>4.1.2.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<AssemblyInfo>
<AssemblyName>System.Xml.Linq</AssemblyName>
<AssemblyVersion>2.0.5.0</AssemblyVersion>
<AssemblyVersion>3.5.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<AssemblyInfo>
<AssemblyName>netstandard</AssemblyName>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
<AssemblyVersion>2.1.0.0</AssemblyVersion>
</AssemblyInfo>
<TypeForwardingChain>
<TypeForwarding From="System.Xml.Linq" FromVersion="4.0.0.0" To="System.Xml.XDocument" ToVersion="0.0.0.0" FrameworkAlternate="dotnet-uwp-10.0" />
<TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Xml.XDocument" ToVersion="5.0.0.0" FrameworkAlternate="net-5.0" />
<TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Xml.XDocument" ToVersion="6.0.0.0" FrameworkAlternate="net-6.0" />
<TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Xml.XDocument" ToVersion="7.0.0.0" FrameworkAlternate="net-7.0" />
<TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Xml.XDocument" ToVersion="8.0.0.0" FrameworkAlternate="net-8.0" />
<TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Xml.XDocument" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
</TypeForwardingChain>
<Base>
<BaseTypeName>System.Xml.Linq.XNode</BaseTypeName>
</Base>
<Interfaces />
<Attributes>
<Attribute FrameworkAlternate="net-8.0;net-9.0">
<AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
<AttributeName Language="F#">[<System.Runtime.CompilerServices.Nullable(0)>]</AttributeName>
</Attribute>
<Attribute FrameworkAlternate="net-8.0;net-9.0">
<AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
<AttributeName Language="F#">[<System.Runtime.CompilerServices.NullableContext(2)>]</AttributeName>
</Attribute>
</Attributes>
<Docs>
<summary>Represents an XML Document Type Definition (DTD).</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
Data Type Definitions (DTD) in XML are a way to do the following:
- Validate XML trees to a limited extent.
- Expand entities, which is a form of text replacement.
- Supply default attributes.
This class represents the XML concept of a DTD.
DTD support in LINQ to XML is limited.
LINQ to XML will expand internal entities by default, but it will not resolve external entity references unless an <xref:System.Xml.XmlReader> with an associated <xref:System.Xml.XmlResolver> is used to load the XML tree.
LINQ to XML will not validate a document against a DTD, but you can use a validating <xref:System.Xml.XmlReader> to perform DTD validation if necessary.
To validate an LINQ to XML tree against an XML schema, use the <xref:System.Xml.Schema.Extensions.Validate%2A> method.
When a document contains entity references that are defined in a DTD, the references are expanded upon creation of the XML tree. However, when you serialize or save the XML tree, the content of the expanded entities is preserved; the entity references are not.
Default attributes from the DTD will be materialized as regular attributes in the XML tree. After a default attribute from the DTD is materialized, there is no way to determine that the attribute was a default attribute from the DTD.
You can populate an XML tree with an XML document that contains an internal DTD. The XML tree will then contain a <xref:System.Xml.Linq.XDocument.DocumentType%2A> node. When you serialize or save the tree, the internal DTD will also be saved as part of the document.
]]></format>
</remarks>
<related type="Article" href="/dotnet/standard/linq/linq-xml-overview">LINQ to XML overview</related>
</Docs>
<Members>
<MemberGroup MemberName=".ctor">
<AssemblyInfo>
<AssemblyName>System.Xml.XDocument</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.10.0</AssemblyVersion>
<AssemblyVersion>4.1.0.0</AssemblyVersion>
</AssemblyInfo>
<Docs>
<summary>Initializes a new instance of the <see cref="T:System.Xml.Linq.XDocumentType" /> class.</summary>
<related type="Article" href="/dotnet/standard/linq/linq-xml-overview">LINQ to XML overview</related>
</Docs>
</MemberGroup>
<Member MemberName=".ctor">
<MemberSignature Language="C#" Value="public XDocumentType (System.Xml.Linq.XDocumentType other);" />
<MemberSignature Language="ILAsm" Value=".method public hidebysig specialname rtspecialname instance void .ctor(class System.Xml.Linq.XDocumentType other) cil managed" />
<MemberSignature Language="DocId" Value="M:System.Xml.Linq.XDocumentType.#ctor(System.Xml.Linq.XDocumentType)" />
<MemberSignature Language="VB.NET" Value="Public Sub New (other As XDocumentType)" />
<MemberSignature Language="F#" Value="new System.Xml.Linq.XDocumentType : System.Xml.Linq.XDocumentType -> System.Xml.Linq.XDocumentType" Usage="new System.Xml.Linq.XDocumentType other" />
<MemberSignature Language="C++ CLI" Value="public:
 XDocumentType(System::Xml::Linq::XDocumentType ^ other);" />
<MemberType>Constructor</MemberType>
<AssemblyInfo>
<AssemblyName>System.Xml.XDocument</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.10.0</AssemblyVersion>
<AssemblyVersion>4.1.0.0</AssemblyVersion>
<AssemblyVersion>4.1.1.0</AssemblyVersion>
<AssemblyVersion>4.1.2.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<AssemblyInfo>
<AssemblyName>System.Xml.Linq</AssemblyName>
<AssemblyVersion>2.0.5.0</AssemblyVersion>
<AssemblyVersion>3.5.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<AssemblyInfo>
<AssemblyName>netstandard</AssemblyName>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
<AssemblyVersion>2.1.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="net-8.0;net-9.0">
<AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
<AttributeName Language="F#">[<System.Runtime.CompilerServices.NullableContext(1)>]</AttributeName>
</Attribute>
</Attributes>
<Parameters>
<Parameter Name="other" Type="System.Xml.Linq.XDocumentType" />
</Parameters>
<Docs>
<param name="other">An <see cref="T:System.Xml.Linq.XDocumentType" /> object to copy from.</param>
<summary>Initializes an instance of the <see cref="T:System.Xml.Linq.XDocumentType" /> class from another <see cref="T:System.Xml.Linq.XDocumentType" /> object.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
This constructor is primarily used internally when making a deep copy of an XML tree.
]]></format>
</remarks>
<related type="Article" href="/dotnet/standard/linq/linq-xml-overview">LINQ to XML overview</related>
</Docs>
</Member>
<Member MemberName=".ctor">
<MemberSignature Language="C#" Value="public XDocumentType (string name, string publicId, string systemId, string internalSubset);" FrameworkAlternate="dotnet-uwp-10.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2;netstandard-1.3;netstandard-1.4;netstandard-1.6;netstandard-2.0;netstandard-2.1" />
<MemberSignature Language="ILAsm" Value=".method public hidebysig specialname rtspecialname instance void .ctor(string name, string publicId, string systemId, string internalSubset) cil managed" />
<MemberSignature Language="DocId" Value="M:System.Xml.Linq.XDocumentType.#ctor(System.String,System.String,System.String,System.String)" />
<MemberSignature Language="VB.NET" Value="Public Sub New (name As String, publicId As String, systemId As String, internalSubset As String)" />
<MemberSignature Language="F#" Value="new System.Xml.Linq.XDocumentType : string * string * string * string -> System.Xml.Linq.XDocumentType" Usage="new System.Xml.Linq.XDocumentType (name, publicId, systemId, internalSubset)" />
<MemberSignature Language="C++ CLI" Value="public:
 XDocumentType(System::String ^ name, System::String ^ publicId, System::String ^ systemId, System::String ^ internalSubset);" />
<MemberSignature Language="C#" Value="public XDocumentType (string name, string? publicId, string? systemId, string internalSubset);" FrameworkAlternate="net-5.0" />
<MemberSignature Language="C#" Value="public XDocumentType (string name, string? publicId, string? systemId, string? internalSubset);" FrameworkAlternate="net-6.0;net-7.0;net-8.0;net-9.0" />
<MemberType>Constructor</MemberType>
<AssemblyInfo>
<AssemblyName>System.Xml.XDocument</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.10.0</AssemblyVersion>
<AssemblyVersion>4.1.0.0</AssemblyVersion>
<AssemblyVersion>4.1.1.0</AssemblyVersion>
<AssemblyVersion>4.1.2.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<AssemblyInfo>
<AssemblyName>System.Xml.Linq</AssemblyName>
<AssemblyVersion>2.0.5.0</AssemblyVersion>
<AssemblyVersion>3.5.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<AssemblyInfo>
<AssemblyName>netstandard</AssemblyName>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
<AssemblyVersion>2.1.0.0</AssemblyVersion>
</AssemblyInfo>
<Parameters>
<Parameter Name="name" Type="System.String">
<Attributes>
<Attribute FrameworkAlternate="net-8.0;net-9.0">
<AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
<AttributeName Language="F#">[<System.Runtime.CompilerServices.Nullable(1)>]</AttributeName>
</Attribute>
</Attributes>
</Parameter>
<Parameter Name="publicId" Type="System.String" />
<Parameter Name="systemId" Type="System.String" />
<Parameter Name="internalSubset" Type="System.String" />
</Parameters>
<Docs>
<param name="name">A <see cref="T:System.String" /> that contains the qualified name of the DTD, which is the same as the qualified name of the root element of the XML document.</param>
<param name="publicId">A <see cref="T:System.String" /> that contains the public identifier of an external public DTD.</param>
<param name="systemId">A <see cref="T:System.String" /> that contains the system identifier of an external private DTD.</param>
<param name="internalSubset">A <see cref="T:System.String" /> that contains the internal subset for an internal DTD.</param>
<summary>Initializes an instance of the <see cref="T:System.Xml.Linq.XDocumentType" /> class.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Examples
The following example creates a document with an internal DTD. When it creates the <xref:System.Xml.Linq.XDocumentType> object, it specifies the qualified name of the DTD (Pubs), and a string that contains the internal subset. Because the document does not use a public or private external DTD, the `publicId` and `systemId` are set to `null`.
```csharp
string internalSubset = @"<!ELEMENT Pubs (Book+)>
<!ELEMENT Book (Title, Author)>
<!ELEMENT Title (#PCDATA)>
<!ELEMENT Author (#PCDATA)>";
string target = "xml-stylesheet";
string data = "href=\"mystyle.css\" title=\"Compact\" type=\"text/css\"";
XDocument doc = new XDocument(
new XComment("This is a comment."),
new XProcessingInstruction(target, data),
new XDocumentType("Pubs", null, null, internalSubset),
new XElement("Pubs",
new XElement("Book",
new XElement("Title", "Artifacts of Roman Civilization"),
new XElement("Author", "Moreno, Jordao")
),
new XElement("Book",
new XElement("Title", "Midieval Tools and Implements"),
new XElement("Author", "Gazit, Inbar")
)
),
new XComment("This is another comment.")
);
doc.Declaration = new XDeclaration("1.0", "utf-8", "true");
Console.WriteLine(doc);
```
```vb
Dim internalSubset = _
"<!ELEMENT Pubs (Book+)>" & Environment.NewLine & _
"<!ELEMENT Book (Title, Author)>" & Environment.NewLine & _
"<!ELEMENT Title (#PCDATA)>" & Environment.NewLine & _
"<!ELEMENT Author (#PCDATA)>"
Dim doc As XDocument = _
<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<!--This is a comment.-->
<?xml-stylesheet href="mystyle.css" title="Compact" type="text/css"?>
<Pubs>
<Book>
<Title>Artifacts of Roman Civilization</Title>
<Author>Moreno, Jordao</Author>
</Book>
<Book>
<Title>Midieval Tools and Implements</Title>
<Author>Gazit, Inbar</Author>
</Book>
</Pubs>
<!--This is another comment.-->
doc.FirstNode.NextNode.AddAfterSelf(new XDocumentType("Pubs", Nothing, Nothing, internalSubset))
Console.WriteLine(doc)
```
This example produces the following output:
```xml
<!--This is a comment.-->
<?xml-stylesheet href="mystyle.css" title="Compact" type="text/css"?>
<!DOCTYPE Pubs [<!ELEMENT Pubs (Book+)>
<!ELEMENT Book (Title, Author)>
<!ELEMENT Title (#PCDATA)>
<!ELEMENT Author (#PCDATA)>]>
<Pubs>
<Book>
<Title>Artifacts of Roman Civilization</Title>
<Author>Moreno, Jordao</Author>
</Book>
<Book>
<Title>Midieval Tools and Implements</Title>
<Author>Gazit, Inbar</Author>
</Book>
</Pubs>
<!--This is another comment.-->
```
]]></format>
</remarks>
<related type="Article" href="/dotnet/standard/linq/linq-xml-overview">LINQ to XML overview</related>
</Docs>
</Member>
<Member MemberName="InternalSubset">
<MemberSignature Language="C#" Value="public string InternalSubset { get; set; }" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2;netstandard-1.3;netstandard-1.4;netstandard-1.6;netstandard-2.0;netstandard-2.1" />
<MemberSignature Language="ILAsm" Value=".property instance string InternalSubset" />
<MemberSignature Language="DocId" Value="P:System.Xml.Linq.XDocumentType.InternalSubset" />
<MemberSignature Language="VB.NET" Value="Public Property InternalSubset As String" />
<MemberSignature Language="F#" Value="member this.InternalSubset : string with get, set" Usage="System.Xml.Linq.XDocumentType.InternalSubset" />
<MemberSignature Language="C++ CLI" Value="public:
 property System::String ^ InternalSubset { System::String ^ get(); void set(System::String ^ value); };" />
<MemberSignature Language="C#" Value="public string? InternalSubset { get; set; }" FrameworkAlternate="net-6.0;net-7.0;net-8.0;net-9.0" />
<MemberType>Property</MemberType>
<AssemblyInfo>
<AssemblyName>System.Xml.XDocument</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.10.0</AssemblyVersion>
<AssemblyVersion>4.1.0.0</AssemblyVersion>
<AssemblyVersion>4.1.1.0</AssemblyVersion>
<AssemblyVersion>4.1.2.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<AssemblyInfo>
<AssemblyName>System.Xml.Linq</AssemblyName>
<AssemblyVersion>2.0.5.0</AssemblyVersion>
<AssemblyVersion>3.5.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<AssemblyInfo>
<AssemblyName>netstandard</AssemblyName>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
<AssemblyVersion>2.1.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="netframework-4.0">
<AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
<AttributeName Language="F#">[<get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")>]</AttributeName>
</Attribute>
</Attributes>
<ReturnValue>
<ReturnType>System.String</ReturnType>
</ReturnValue>
<Docs>
<summary>Gets or sets the internal subset for this Document Type Definition (DTD).</summary>
<value>A <see cref="T:System.String" /> that contains the internal subset for this Document Type Definition (DTD).</value>
<remarks>
<format type="text/markdown"><![CDATA[
## Examples
The following example creates a document with a DTD that contains an internal subset.
```csharp
string internalSubset = @"<!ELEMENT Pubs (Book+)>
<!ELEMENT Book (Title, Author)>
<!ELEMENT Title (#PCDATA)>
<!ELEMENT Author (#PCDATA)>";
string target = "xml-stylesheet";
string data = "href=\"mystyle.css\" title=\"Compact\" type=\"text/css\"";
XDocument doc = new XDocument(
new XComment("This is a comment."),
new XProcessingInstruction(target, data),
new XDocumentType("Pubs", null, null, internalSubset),
new XElement("Pubs",
new XElement("Book",
new XElement("Title", "Artifacts of Roman Civilization"),
new XElement("Author", "Moreno, Jordao")
),
new XElement("Book",
new XElement("Title", "Midieval Tools and Implements"),
new XElement("Author", "Gazit, Inbar")
)
),
new XComment("This is another comment.")
);
doc.Declaration = new XDeclaration("1.0", "utf-8", "true");
Console.WriteLine(doc.DocumentType.InternalSubset);
```
```vb
Dim internalSubset = _
"<!ELEMENT Pubs (Book+)>" & Environment.NewLine & _
"<!ELEMENT Book (Title, Author)>" & Environment.NewLine & _
"<!ELEMENT Title (#PCDATA)>" & Environment.NewLine & _
"<!ELEMENT Author (#PCDATA)>"
Dim doc As XDocument = _
<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<!--This is a comment.-->
<?xml-stylesheet href='mystyle.css' title='Compact' type='text/css'?>
<Pubs>
<Book>
<Title>Artifacts of Roman Civilization</Title>
<Author>Moreno, Jordao</Author>
</Book>
<Book>
<Title>Midieval Tools and Implements</Title>
<Author>Gazit, Inbar</Author>
</Book>
</Pubs>
<!--This is another comment.-->
doc.FirstNode.AddAfterSelf(new XDocumentType("Pubs", Nothing, Nothing, internalSubset))
Console.WriteLine(doc.DocumentType.InternalSubset)
```
This example produces the following output:
```
<!ELEMENT Pubs (Book+)>
<!ELEMENT Book (Title, Author)>
<!ELEMENT Title (#PCDATA)>
<!ELEMENT Author (#PCDATA)>
```
]]></format>
</remarks>
<related type="Article" href="/dotnet/standard/linq/linq-xml-overview">LINQ to XML overview</related>
</Docs>
</Member>
<Member MemberName="Name">
<MemberSignature Language="C#" Value="public string Name { get; set; }" />
<MemberSignature Language="ILAsm" Value=".property instance string Name" />
<MemberSignature Language="DocId" Value="P:System.Xml.Linq.XDocumentType.Name" />
<MemberSignature Language="VB.NET" Value="Public Property Name As String" />
<MemberSignature Language="F#" Value="member this.Name : string with get, set" Usage="System.Xml.Linq.XDocumentType.Name" />
<MemberSignature Language="C++ CLI" Value="public:
 property System::String ^ Name { System::String ^ get(); void set(System::String ^ value); };" />
<MemberType>Property</MemberType>
<AssemblyInfo>
<AssemblyName>System.Xml.XDocument</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.10.0</AssemblyVersion>
<AssemblyVersion>4.1.0.0</AssemblyVersion>
<AssemblyVersion>4.1.1.0</AssemblyVersion>
<AssemblyVersion>4.1.2.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<AssemblyInfo>
<AssemblyName>System.Xml.Linq</AssemblyName>
<AssemblyVersion>2.0.5.0</AssemblyVersion>
<AssemblyVersion>3.5.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<AssemblyInfo>
<AssemblyName>netstandard</AssemblyName>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
<AssemblyVersion>2.1.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="net-8.0;net-9.0">
<AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
<AttributeName Language="F#">[<System.Runtime.CompilerServices.Nullable(1)>]</AttributeName>
</Attribute>
<Attribute FrameworkAlternate="net-8.0;net-9.0">
<AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
<AttributeName Language="F#">[<get: System.Runtime.CompilerServices.NullableContext(1)>]</AttributeName>
</Attribute>
<Attribute FrameworkAlternate="net-8.0;net-9.0">
<AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
<AttributeName Language="F#">[<set: System.Runtime.CompilerServices.NullableContext(1)>]</AttributeName>
</Attribute>
<Attribute FrameworkAlternate="netframework-4.0">
<AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
<AttributeName Language="F#">[<get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")>]</AttributeName>
</Attribute>
</Attributes>
<ReturnValue>
<ReturnType>System.String</ReturnType>
</ReturnValue>
<Docs>
<summary>Gets or sets the name for this Document Type Definition (DTD).</summary>
<value>A <see cref="T:System.String" /> that contains the name for this Document Type Definition (DTD).</value>
<remarks>
<format type="text/markdown"><![CDATA[
## Examples
The following example creates an XML document that contains a DTD. After creating the document, it retrieves the qualified name of the DTD using this property.
```csharp
string internalSubset = @"<!ELEMENT Pubs (Book+)>
<!ELEMENT Book (Title, Author)>
<!ELEMENT Title (#PCDATA)>
<!ELEMENT Author (#PCDATA)>";
string target = "xml-stylesheet";
string data = "href=\"mystyle.css\" title=\"Compact\" type=\"text/css\"";
XDocument doc = new XDocument(
new XComment("This is a comment."),
new XProcessingInstruction(target, data),
new XDocumentType("Pubs", null, null, internalSubset),
new XElement("Pubs",
new XElement("Book",
new XElement("Title", "Artifacts of Roman Civilization"),
new XElement("Author", "Moreno, Jordao")
),
new XElement("Book",
new XElement("Title", "Midieval Tools and Implements"),
new XElement("Author", "Gazit, Inbar")
)
),
new XComment("This is another comment.")
);
doc.Declaration = new XDeclaration("1.0", "utf-8", "true");
Console.WriteLine(doc.DocumentType.Name);
```
```vb
Dim internalSubset = _
"<!ELEMENT Pubs (Book+)>" & Environment.NewLine & _
"<!ELEMENT Book (Title, Author)>" & Environment.NewLine & _
"<!ELEMENT Title (#PCDATA)>" & Environment.NewLine & _
"<!ELEMENT Author (#PCDATA)>"
Dim doc As XDocument = _
<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<!--This is a comment.-->
<?xml-stylesheet href='mystyle.css' title='Compact' type='text/css'?>
<Pubs>
<Book>
<Title>Artifacts of Roman Civilization</Title>
<Author>Moreno, Jordao</Author>
</Book>
<Book>
<Title>Midieval Tools and Implements</Title>
<Author>Gazit, Inbar</Author>
</Book>
</Pubs>
<!--This is another comment.-->
doc.FirstNode.AddAfterSelf(new XDocumentType("Pubs", Nothing, Nothing, internalSubset))
Console.WriteLine(doc.DocumentType.Name)
```
This example produces the following output:
```
Pubs
```
]]></format>
</remarks>
<related type="Article" href="/dotnet/standard/linq/linq-xml-overview">LINQ to XML overview</related>
</Docs>
</Member>
<Member MemberName="NodeType">
<MemberSignature Language="C#" Value="public override System.Xml.XmlNodeType NodeType { get; }" />
<MemberSignature Language="ILAsm" Value=".property instance valuetype System.Xml.XmlNodeType NodeType" />
<MemberSignature Language="DocId" Value="P:System.Xml.Linq.XDocumentType.NodeType" />
<MemberSignature Language="VB.NET" Value="Public Overrides ReadOnly Property NodeType As XmlNodeType" />
<MemberSignature Language="F#" Value="member this.NodeType : System.Xml.XmlNodeType" Usage="System.Xml.Linq.XDocumentType.NodeType" />
<MemberSignature Language="C++ CLI" Value="public:
 virtual property System::Xml::XmlNodeType NodeType { System::Xml::XmlNodeType get(); };" />
<MemberType>Property</MemberType>
<AssemblyInfo>
<AssemblyName>System.Xml.XDocument</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.10.0</AssemblyVersion>
<AssemblyVersion>4.1.0.0</AssemblyVersion>
<AssemblyVersion>4.1.1.0</AssemblyVersion>
<AssemblyVersion>4.1.2.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<AssemblyInfo>
<AssemblyName>System.Xml.Linq</AssemblyName>
<AssemblyVersion>2.0.5.0</AssemblyVersion>
<AssemblyVersion>3.5.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<AssemblyInfo>
<AssemblyName>netstandard</AssemblyName>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
<AssemblyVersion>2.1.0.0</AssemblyVersion>
</AssemblyInfo>
<ReturnValue>
<ReturnType>System.Xml.XmlNodeType</ReturnType>
</ReturnValue>
<Docs>
<summary>Gets the node type for this node.</summary>
<value>The node type. For <see cref="T:System.Xml.Linq.XDocumentType" /> objects, this value is <see cref="F:System.Xml.XmlNodeType.DocumentType" />.</value>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
Because all classes that derive from <xref:System.Xml.Linq.XObject> contain a <xref:System.Xml.Linq.XObject.NodeType%2A> property, you can write code that operates on collections of concrete subclass of <xref:System.Xml.Linq.XObject>. Your code can then test for the node type of each node in the collection.
## Examples
The following example shows the use of this property to retrieve the node type for an <xref:System.Xml.Linq.XDocumentType> object.
```csharp
string internalSubset = @"<!ELEMENT Pubs (Book+)>
<!ELEMENT Book (Title, Author)>
<!ELEMENT Title (#PCDATA)>
<!ELEMENT Author (#PCDATA)>";
string target = "xml-stylesheet";
string data = "href=\"mystyle.css\" title=\"Compact\" type=\"text/css\"";
XDocument doc = new XDocument(
new XComment("This is a comment."),
new XProcessingInstruction(target, data),
new XDocumentType("Pubs", null, null, internalSubset),
new XElement("Pubs",
new XElement("Book",
new XElement("Title", "Artifacts of Roman Civilization"),
new XElement("Author", "Moreno, Jordao")
),
new XElement("Book",
new XElement("Title", "Midieval Tools and Implements"),
new XElement("Author", "Gazit, Inbar")
)
),
new XComment("This is another comment.")
);
doc.Declaration = new XDeclaration("1.0", "utf-8", "true");
Console.WriteLine(doc.DocumentType.NodeType);
```
```vb
Dim internalSubset = _
"<!ELEMENT Pubs (Book+)>" & Environment.NewLine & _
"<!ELEMENT Book (Title, Author)>" & Environment.NewLine & _
"<!ELEMENT Title (#PCDATA)>" & Environment.NewLine & _
"<!ELEMENT Author (#PCDATA)>"
Dim doc As XDocument = _
<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<!--This is a comment.-->
<?xml-stylesheet href='mystyle.css' title='Compact' type='text/css'?>
<Pubs>
<Book>
<Title>Artifacts of Roman Civilization</Title>
<Author>Moreno, Jordao</Author>
</Book>
<Book>
<Title>Midieval Tools and Implements</Title>
<Author>Gazit, Inbar</Author>
</Book>
</Pubs>
<!--This is another comment.-->
doc.FirstNode.AddAfterSelf(new XDocumentType("Pubs", Nothing, Nothing, internalSubset))
Console.WriteLine(doc.DocumentType.NodeType.ToString())
```
This example produces the following output:
```
DocumentType
```
]]></format>
</remarks>
<related type="Article" href="/dotnet/standard/linq/linq-xml-overview">LINQ to XML overview</related>
</Docs>
</Member>
<Member MemberName="PublicId">
<MemberSignature Language="C#" Value="public string PublicId { get; set; }" FrameworkAlternate="dotnet-uwp-10.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2;netstandard-1.3;netstandard-1.4;netstandard-1.6;netstandard-2.0;netstandard-2.1" />
<MemberSignature Language="ILAsm" Value=".property instance string PublicId" />
<MemberSignature Language="DocId" Value="P:System.Xml.Linq.XDocumentType.PublicId" />
<MemberSignature Language="VB.NET" Value="Public Property PublicId As String" />
<MemberSignature Language="F#" Value="member this.PublicId : string with get, set" Usage="System.Xml.Linq.XDocumentType.PublicId" />
<MemberSignature Language="C++ CLI" Value="public:
 property System::String ^ PublicId { System::String ^ get(); void set(System::String ^ value); };" />
<MemberSignature Language="C#" Value="public string? PublicId { get; set; }" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0" />
<MemberType>Property</MemberType>
<AssemblyInfo>
<AssemblyName>System.Xml.XDocument</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.10.0</AssemblyVersion>
<AssemblyVersion>4.1.0.0</AssemblyVersion>
<AssemblyVersion>4.1.1.0</AssemblyVersion>
<AssemblyVersion>4.1.2.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<AssemblyInfo>
<AssemblyName>System.Xml.Linq</AssemblyName>
<AssemblyVersion>2.0.5.0</AssemblyVersion>
<AssemblyVersion>3.5.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<AssemblyInfo>
<AssemblyName>netstandard</AssemblyName>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
<AssemblyVersion>2.1.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="netframework-4.0">
<AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
<AttributeName Language="F#">[<get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")>]</AttributeName>
</Attribute>
</Attributes>
<ReturnValue>
<ReturnType>System.String</ReturnType>
</ReturnValue>
<Docs>
<summary>Gets or sets the public identifier for this Document Type Definition (DTD).</summary>
<value>A <see cref="T:System.String" /> that contains the public identifier for this Document Type Definition (DTD).</value>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
If an XML document uses an external public DTD, this property will contain the public identifier of the external DTD.
]]></format>
</remarks>
<related type="Article" href="/dotnet/standard/linq/linq-xml-overview">LINQ to XML overview</related>
</Docs>
</Member>
<Member MemberName="SystemId">
<MemberSignature Language="C#" Value="public string SystemId { get; set; }" FrameworkAlternate="dotnet-uwp-10.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2;netstandard-1.3;netstandard-1.4;netstandard-1.6;netstandard-2.0;netstandard-2.1" />
<MemberSignature Language="ILAsm" Value=".property instance string SystemId" />
<MemberSignature Language="DocId" Value="P:System.Xml.Linq.XDocumentType.SystemId" />
<MemberSignature Language="VB.NET" Value="Public Property SystemId As String" />
<MemberSignature Language="F#" Value="member this.SystemId : string with get, set" Usage="System.Xml.Linq.XDocumentType.SystemId" />
<MemberSignature Language="C++ CLI" Value="public:
 property System::String ^ SystemId { System::String ^ get(); void set(System::String ^ value); };" />
<MemberSignature Language="C#" Value="public string? SystemId { get; set; }" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0" />
<MemberType>Property</MemberType>
<AssemblyInfo>
<AssemblyName>System.Xml.XDocument</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.10.0</AssemblyVersion>
<AssemblyVersion>4.1.0.0</AssemblyVersion>
<AssemblyVersion>4.1.1.0</AssemblyVersion>
<AssemblyVersion>4.1.2.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<AssemblyInfo>
<AssemblyName>System.Xml.Linq</AssemblyName>
<AssemblyVersion>2.0.5.0</AssemblyVersion>
<AssemblyVersion>3.5.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<AssemblyInfo>
<AssemblyName>netstandard</AssemblyName>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
<AssemblyVersion>2.1.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="netframework-4.0">
<AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
<AttributeName Language="F#">[<get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")>]</AttributeName>
</Attribute>
</Attributes>
<ReturnValue>
<ReturnType>System.String</ReturnType>
</ReturnValue>
<Docs>
<summary>Gets or sets the system identifier for this Document Type Definition (DTD).</summary>
<value>A <see cref="T:System.String" /> that contains the system identifier for this Document Type Definition (DTD).</value>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
If an XML document uses an external private DTD, this property will contain the private identifier of the external DTD.
## Examples
The following example creates an XML document that refers to an external private DTD. The DTD does not have an internal subset. The call to the <xref:System.Xml.Linq.XDocumentType> constructor reflects the use of the external private DTD. It passes `null` for the internal subset.
```csharp
string pubsDtd =
@"<!ELEMENT Pubs (Book+)>
<!ELEMENT Book (Title, Author)>
<!ELEMENT Title (#PCDATA)>
<!ELEMENT Author (#PCDATA)>";
File.WriteAllText("Pubs.dtd", pubsDtd);
string target = "xml-stylesheet";
string data = "href=\"mystyle.css\" title=\"Compact\" type=\"text/css\"";
XDocument doc = new XDocument(
new XDocumentType("Pubs", null, "Pubs.dtd", null),
new XElement("Pubs",
new XElement("Book",
new XElement("Title", "Artifacts of Roman Civilization"),
new XElement("Author", "Moreno, Jordao")
),
new XElement("Book",
new XElement("Title", "Midieval Tools and Implements"),
new XElement("Author", "Gazit, Inbar")
)
),
new XComment("This is another comment.")
);
doc.Declaration = new XDeclaration("1.0", "utf-8", "true");
doc.Save("Pubs.xml");
// Validate Pubs.xml against Pubs.dtd.
XmlReaderSettings xrs = new XmlReaderSettings();
xrs.ProhibitDtd = false;
xrs.ValidationType = ValidationType.DTD;
xrs.ConformanceLevel = ConformanceLevel.Auto;
XmlReader xr = XmlReader.Create("Pubs.xml", xrs);
XDocument doc2 = XDocument.Load(xr);
XDocumentType dt = doc2.Document.DocumentType;
Console.WriteLine("SystemId:{0}", dt.SystemId);
```
```vb
Dim pubsDtd As String = _
"<!ELEMENT Pubs (Book+)>" & Environment.NewLine & _
"<!ELEMENT Book (Title, Author)>" & Environment.NewLine & _
"<!ELEMENT Title (#PCDATA)>" & Environment.NewLine & _
"<!ELEMENT Author (#PCDATA)>"
File.WriteAllText("Pubs.dtd", pubsDtd)
Dim target As String = "xml-stylesheet"
Dim data As String = "href='mystyle.css' title='Compact' type='text/css'"
Dim doc As XDocument = _
<?xml version='1.0'?>
<Pubs>
<Book>
<Title>Artifacts of Roman Civilization</Title>
<Author>Moreno, Jordao</Author>
</Book>
<Book>
<Title>Midieval Tools and Implements</Title>
<Author>Gazit, Inbar</Author>
</Book>
</Pubs>
<!--This is another comment.-->
doc _
.FirstNode _
.AddBeforeSelf(New XDocumentType("Pubs", Nothing, "Pubs.dtd", Nothing))
doc.Declaration = New XDeclaration("1.0", "utf-8", "true")
doc.Save("Pubs.xml")
' Validate Pubs.xml against Pubs.dtd.
Dim xrs As XmlReaderSettings = New XmlReaderSettings()
xrs.ProhibitDtd = False
xrs.ValidationType = ValidationType.DTD
xrs.ConformanceLevel = ConformanceLevel.Auto
Dim xr As XmlReader = XmlReader.Create("Pubs.xml", xrs)
Dim doc2 As XDocument = XDocument.Load(xr)
Dim dt As XDocumentType = doc2.Document.DocumentType
Console.WriteLine("SystemId:{0}", dt.SystemId)
```
This example produces the following output:
```
SystemId:Pubs.dtd
```
]]></format>
</remarks>
<related type="Article" href="/dotnet/standard/linq/linq-xml-overview">LINQ to XML overview</related>
</Docs>
</Member>
<Member MemberName="WriteTo">
<MemberSignature Language="C#" Value="public override void WriteTo (System.Xml.XmlWriter writer);" />
<MemberSignature Language="ILAsm" Value=".method public hidebysig virtual instance void WriteTo(class System.Xml.XmlWriter writer) cil managed" />
<MemberSignature Language="DocId" Value="M:System.Xml.Linq.XDocumentType.WriteTo(System.Xml.XmlWriter)" />
<MemberSignature Language="VB.NET" Value="Public Overrides Sub WriteTo (writer As XmlWriter)" />
<MemberSignature Language="F#" Value="override this.WriteTo : System.Xml.XmlWriter -> unit" Usage="xDocumentType.WriteTo writer" />
<MemberSignature Language="C++ CLI" Value="public:
 override void WriteTo(System::Xml::XmlWriter ^ writer);" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>System.Xml.XDocument</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.10.0</AssemblyVersion>
<AssemblyVersion>4.1.0.0</AssemblyVersion>
<AssemblyVersion>4.1.1.0</AssemblyVersion>
<AssemblyVersion>4.1.2.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<AssemblyInfo>
<AssemblyName>System.Xml.Linq</AssemblyName>
<AssemblyVersion>2.0.5.0</AssemblyVersion>
<AssemblyVersion>3.5.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<AssemblyInfo>
<AssemblyName>netstandard</AssemblyName>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
<AssemblyVersion>2.1.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="net-8.0;net-9.0">
<AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
<AttributeName Language="F#">[<System.Runtime.CompilerServices.NullableContext(1)>]</AttributeName>
</Attribute>
</Attributes>
<ReturnValue>
<ReturnType>System.Void</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="writer" Type="System.Xml.XmlWriter" />
</Parameters>
<Docs>
<param name="writer">An <see cref="T:System.Xml.XmlWriter" /> into which this method will write.</param>
<summary>Write this <see cref="T:System.Xml.Linq.XDocumentType" /> to an <see cref="T:System.Xml.XmlWriter" />.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
This method is primarily used internally by the methods that write an XML tree to an <xref:System.Xml.XmlWriter>.
]]></format>
</remarks>
<related type="Article" href="/dotnet/standard/linq/linq-xml-overview">LINQ to XML overview</related>
</Docs>
</Member>
<Member MemberName="WriteToAsync">
<MemberSignature Language="C#" Value="public override System.Threading.Tasks.Task WriteToAsync (System.Xml.XmlWriter writer, System.Threading.CancellationToken cancellationToken);" />
<MemberSignature Language="ILAsm" Value=".method public hidebysig virtual instance class System.Threading.Tasks.Task WriteToAsync(class System.Xml.XmlWriter writer, valuetype System.Threading.CancellationToken cancellationToken) cil managed" />
<MemberSignature Language="DocId" Value="M:System.Xml.Linq.XDocumentType.WriteToAsync(System.Xml.XmlWriter,System.Threading.CancellationToken)" />
<MemberSignature Language="VB.NET" Value="Public Overrides Function WriteToAsync (writer As XmlWriter, cancellationToken As CancellationToken) As Task" />
<MemberSignature Language="F#" Value="override this.WriteToAsync : System.Xml.XmlWriter * System.Threading.CancellationToken -> System.Threading.Tasks.Task" Usage="xDocumentType.WriteToAsync (writer, cancellationToken)" />
<MemberSignature Language="C++ CLI" Value="public:
 override System::Threading::Tasks::Task ^ WriteToAsync(System::Xml::XmlWriter ^ writer, System::Threading::CancellationToken cancellationToken);" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>System.Xml.XDocument</AssemblyName>
<AssemblyVersion>4.1.0.0</AssemblyVersion>
<AssemblyVersion>4.1.1.0</AssemblyVersion>
<AssemblyVersion>4.1.2.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<AssemblyInfo>
<AssemblyName>netstandard</AssemblyName>
<AssemblyVersion>2.1.0.0</AssemblyVersion>
</AssemblyInfo>
<AssemblyInfo>
<AssemblyName>System.Xml.Linq</AssemblyName>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="net-8.0;net-9.0">
<AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
<AttributeName Language="F#">[<System.Runtime.CompilerServices.NullableContext(1)>]</AttributeName>
</Attribute>
</Attributes>
<ReturnValue>
<ReturnType>System.Threading.Tasks.Task</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="writer" Type="System.Xml.XmlWriter" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0" />
<Parameter Name="cancellationToken" Type="System.Threading.CancellationToken" Index="1" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0" />
</Parameters>
<Docs>
<param name="writer">The writer to write this <see cref="T:System.Xml.Linq.XDocumentType" /> to.</param>
<param name="cancellationToken">A token that can be used to request cancellation of the asynchronous operation.</param>
<summary>Writes this <see cref="T:System.Xml.Linq.XDocumentType" /> to the specified <see cref="T:System.Xml.XmlWriter" />.</summary>
<returns>A task representing the asynchronous write operation.</returns>
<remarks>This method stores in the task it returns all non-usage exceptions that the method's synchronous counterpart can throw. If an exception is stored into the returned task, that exception will be thrown when the task is awaited. Usage exceptions, such as <see cref="T:System.ArgumentException" />, are still thrown synchronously. For the stored exceptions, see the exceptions thrown by <see cref="M:System.Xml.Linq.XDocumentType.WriteTo(System.Xml.XmlWriter)" />.</remarks>
<exception cref="T:System.OperationCanceledException">The cancellation token was canceled. This exception is stored into the returned task.</exception>
</Docs>
</Member>
</Members>
</Type>