Поделиться через

  • Статья

XObject.RemoveAnnotations Method (Type)

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Removes the annotations of the specified type from this XObject.

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

Syntax

'Declaration
Public Sub RemoveAnnotations ( _
    type As Type _
)

public void RemoveAnnotations(
    Type type
)

Parameters

Examples

The following class is used in the example below:

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

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

The following example creates an element with four annotations on it. It then uses this method to remove two of them.

Dim output As New StringBuilder
Dim root As XElement = <Root>content</Root>
root.AddAnnotation(New MyAnnotation("T1"))
root.AddAnnotation(New MyAnnotation("T2"))
root.AddAnnotation("abc")
root.AddAnnotation("def")

output.Append("Count before removing: {0}", root.Annotations(Of Object)().Count())
output.Append(Environment.NewLine)
root.RemoveAnnotations(GetType(MyAnnotation))
output.Append("Count after removing: {0}", root.Annotations(Of Object)().Count())
output.Append(Environment.NewLine)
OutputTextBlock.Text = output.ToString()

StringBuilder output = new StringBuilder();
XElement root = new XElement("Root", "content");
root.AddAnnotation(new MyAnnotation("T1"));
root.AddAnnotation(new MyAnnotation("T2"));
root.AddAnnotation("abc");
root.AddAnnotation("def");

output.Append("Count before removing: " +  root.Annotations<object>().Count() + Environment.NewLine);
root.RemoveAnnotations(typeof(MyAnnotation));
output.Append("Count after removing: " +  root.Annotations<object>().Count() + Environment.NewLine);

OutputTextBlock.Text = output.ToString();

Version Information

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

Platforms

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