XObject.Annotations Metode

Definisi

Ruang nama:

System.Xml.Linq

Rakitan:

netstandard.dll, System.Xml.XDocument.dll

Overload

Nama	Deskripsi
Annotations(Type)	Mendapatkan kumpulan anotasi dari jenis yang ditentukan untuk ini XObject.
Annotations<T>()	Mendapatkan kumpulan anotasi dari jenis yang ditentukan untuk ini XObject.

Annotations(Type)

Sumber:

XObject.cs

Mendapatkan kumpulan anotasi dari jenis yang ditentukan untuk ini XObject.

public:
 System::Collections::Generic::IEnumerable<System::Object ^> ^ Annotations(Type ^ type);

public System.Collections.Generic.IEnumerable<object> Annotations(Type type);

member this.Annotations : Type -> seq<obj>

Public Function Annotations (type As Type) As IEnumerable(Of Object)

Parameter

type

Type

Jenis anotasi yang akan diambil.

Mengembalikan

IEnumerable<Object>

Salah satu IEnumerable<T> dari Object yang berisi anotasi yang cocok dengan jenis yang ditentukan untuk ini XObject.

Contoh

Contoh berikut menambahkan beberapa anotasi ke XElement, lalu mengambil kumpulan anotasi dengan menggunakan metode ini.

public class MyAnnotation
{
    private string tag;
    public string Tag { get { return tag; } set { tag = value; } }
    public MyAnnotation(string tag)
    {
        this.tag = tag;
    }
}

class Program
{
    static void Main(string[] args)
    {
        XElement root = new XElement("Root", "content");
        root.AddAnnotation(new MyAnnotation("T1"));
        root.AddAnnotation(new MyAnnotation("T2"));
        root.AddAnnotation("abc");
        root.AddAnnotation("def");

        IEnumerable<object> annotationList;
        annotationList = root.Annotations(typeof(MyAnnotation));
        foreach (object ma in annotationList)
            Console.WriteLine(((MyAnnotation)ma).Tag);
        Console.WriteLine("----");

        IEnumerable<object> stringAnnotationList;
        stringAnnotationList = root.Annotations(typeof(string));
        foreach (object str in stringAnnotationList)
            Console.WriteLine((string)str);
    }
}

Public Class MyAnnotation
    Private _tag As String

    Property Tag() As String
        Get
            Return Me._tag
        End Get
        Set(ByVal Value As String)
            Me._tag = Value
        End Set
    End Property

    Public Sub New(ByVal tag As String)
        Me._tag = tag
    End Sub
End Class

Module Module1
    Sub Main()
        Dim root As XElement = <Root>content</Root>
        root.AddAnnotation(New MyAnnotation("T1"))
        root.AddAnnotation(New MyAnnotation("T2"))
        root.AddAnnotation("abc")
        root.AddAnnotation("def")

        Dim annotationList As IEnumerable(Of Object)
        annotationList = root.Annotations(GetType(MyAnnotation))
        For Each ma As MyAnnotation In annotationList
            Console.WriteLine(ma.Tag)
        Next

        Console.WriteLine("----")

        Dim stringAnnotationList As IEnumerable(Of Object)
        stringAnnotationList = root.Annotations(GetType(String))
        For Each str As String In stringAnnotationList
            Console.WriteLine(str)
        Next
    End Sub
End Module

Contoh ini menghasilkan output berikut:

T1
T2
----
abc
def

Lihat juga

• Gambaran umum LINQ ke XML

Annotations<T>()

Sumber:

XObject.cs

Mendapatkan kumpulan anotasi dari jenis yang ditentukan untuk ini XObject.

public:
generic <typename T>
 where T : class System::Collections::Generic::IEnumerable<T> ^ Annotations();

public System.Collections.Generic.IEnumerable<T> Annotations<T>() where T : class;

member this.Annotations : unit -> seq<'T (requires 'T : null)> (requires 'T : null)

Public Function Annotations(Of T As Class) () As IEnumerable(Of T)

Jenis parameter

T

Jenis anotasi yang akan diambil.

Mengembalikan

IEnumerable<T>

Yang IEnumerable<T> berisi anotasi untuk ini XObject.

Contoh

Contoh berikut menggunakan metode ini untuk mengambil anotasi pada elemen.

public class MyAnnotation {
    private string tag;
    public string Tag {get{return tag;} set{tag=value;}}
    public MyAnnotation(string tag) {
        this.tag = tag;
    }
}

class Program {
    static void Main(string[] args) {
        XElement root = new XElement("Root", "content");
        root.AddAnnotation(new MyAnnotation("T1"));
        root.AddAnnotation(new MyAnnotation("T2"));
        root.AddAnnotation("abc");
        root.AddAnnotation("def");

        IEnumerable<MyAnnotation> annotationList;
        annotationList = root.Annotations<MyAnnotation>();
        foreach (MyAnnotation ma in annotationList)
            Console.WriteLine(ma.Tag);
        Console.WriteLine("----");

        IEnumerable<string> stringAnnotationList;
        stringAnnotationList = root.Annotations<string>();
        foreach (string str in stringAnnotationList)
            Console.WriteLine(str);
    }
}

Public Class MyAnnotation
    Private _tag As String

    Property Tag() As String
        Get
            Return Me._tag
        End Get
        Set(ByVal Value As String)
            Me._tag = Value
        End Set
    End Property

    Public Sub New(ByVal tag As String)
        Me._tag = tag
    End Sub
End Class

Module Module1
    Sub Main()
        Dim root As XElement = <Root>content</Root>
        root.AddAnnotation(New MyAnnotation("T1"))
        root.AddAnnotation(New MyAnnotation("T2"))
        root.AddAnnotation("abc")
        root.AddAnnotation("def")

        Dim annotationList As IEnumerable(Of MyAnnotation)
        annotationList = root.Annotations(Of MyAnnotation)()
        For Each ma As MyAnnotation In annotationList
            Console.WriteLine(ma.Tag)
        Next
        Console.WriteLine("----")

        Dim stringAnnotationList As IEnumerable(Of String)
        stringAnnotationList = root.Annotations(Of String)()
        For Each str As String In stringAnnotationList
            Console.WriteLine(str)
        Next
    End Sub
End Module

Contoh ini menghasilkan output berikut:

T1
T2
----
abc
def

Lihat juga

• Gambaran umum LINQ ke XML