SecurityElement SecurityElement SecurityElement SecurityElement Class

定義

代表用於編碼安全性物件的 XML 物件模型。Represents the XML object model for encoding security objects. 這個類別無法被繼承。This class cannot be inherited.

public ref class SecurityElement sealed
[System.Runtime.InteropServices.ComVisible(true)]
[System.Serializable]
public sealed class SecurityElement
type SecurityElement = class
Public NotInheritable Class SecurityElement
繼承
SecurityElementSecurityElementSecurityElementSecurityElement
屬性

範例

下列範例示範如何使用之成員的SecurityElement類別。The following example shows the use of members of the SecurityElement class.

using namespace System;
using namespace System::Security;
using namespace System::Collections;
ref class SecurityElementMembers
{
public:

   [STAThread]
   int TestSecurityElementMembers()
   {
      SecurityElement^ xmlRootElement = gcnew SecurityElement( L"RootTag",L"XML security tree" );

      AddAttribute( xmlRootElement, L"creationdate", DateTime::Now.ToString() );
      AddChildElement( xmlRootElement, L"destroytime", DateTime::Now.AddSeconds( 1.0 ).ToString() );
      
      SecurityElement^ windowsRoleElement = gcnew SecurityElement( L"WindowsMembership.WindowsRole" );

      windowsRoleElement->AddAttribute( L"version", L"1.00" );

      // Add a child element and a creationdate attribute.
      AddChildElement( windowsRoleElement, L"BabyElement", L"This is a child element" );
      AddAttribute( windowsRoleElement, L"creationdate", DateTime::Now.ToString() );
      
      xmlRootElement->AddChild( windowsRoleElement );

      CompareAttributes( xmlRootElement, L"creationdate" );
      ConvertToHashTable( xmlRootElement );
      DisplaySummary( xmlRootElement );

      // Determine if the security element is too old to keep.
      xmlRootElement = DestroyTree( xmlRootElement );
      if ( xmlRootElement != nullptr )
      {
         String^ elementInXml = xmlRootElement->ToString();

         Console::WriteLine( elementInXml );
      }

      Console::WriteLine( L"This sample completed successfully; "
      L"press Enter to exit." );
      Console::ReadLine();
      return 1;
   }


private:

   // Add an attribute to the specified security element.
   static SecurityElement^ AddAttribute( SecurityElement^ xmlElement, String^ attributeName, String^ attributeValue )
   {
      if ( xmlElement != nullptr )
      {
         // Verify that the attribute name and value are valid XML formats.
         if ( SecurityElement::IsValidAttributeName( attributeName ) &&
                SecurityElement::IsValidAttributeValue( attributeValue ) )
         {
            // Add the attribute to the security element.
            xmlElement->AddAttribute( attributeName, attributeValue );
         }
      }

      return xmlElement;
   }


   // Add a child element to the specified security element.
   static SecurityElement^ AddChildElement( SecurityElement^ parentElement, String^ tagName, String^ tagText )
   {
      if ( parentElement != nullptr )
      {
         // Ensure that the tag text is in valid XML format.
         if (  !SecurityElement::IsValidText( tagText ) )
         {
            // Replace invalid text with valid XML text 
            // to enforce proper XML formatting.
            tagText = SecurityElement::Escape( tagText );
         }

         // Determine whether the tag is in valid XML format.
         if ( SecurityElement::IsValidTag( tagName ) )
         {
            SecurityElement^ childElement;
            childElement = parentElement->SearchForChildByTag( tagName );
            if ( childElement != nullptr )
            {
               String^ elementText;
               elementText = parentElement->SearchForTextOfTag( tagName );
               if (  !elementText->Equals( tagText ) )
               {
                  // Add child element to the parent security element.
                  parentElement->AddChild( gcnew SecurityElement( tagName,tagText ) );
               }
            }
            else
            {
               // Add child element to the parent security element.
               parentElement->AddChild( gcnew SecurityElement( tagName,tagText ) );
            }
         }
      }

      return parentElement;
   }


   // Create and display a summary sentence 
   // about the specified security element.
   static void DisplaySummary( SecurityElement^ xmlElement )
   {
      // Retrieve tag name for the security element.
      String^ xmlTreeName = xmlElement->Tag->ToString();
      // Retrieve tag text for the security element.
      String^ xmlTreeDescription = xmlElement->Text;
      // Retrieve value of the creationdate attribute.
      String^ xmlCreationDate = xmlElement->Attribute(L"creationdate");
      // Retrieve the number of children under the security element.
      String^ childrenCount = xmlElement->Children->Count.ToString();
      String^ outputMessage = String::Format( L"The security XML tree named {0}", xmlTreeName );
      outputMessage = String::Concat( outputMessage, String::Format( L"({0})", xmlTreeDescription ) );
      outputMessage = String::Concat( outputMessage, String::Format( L" was created on {0} and ", xmlCreationDate ) );
      outputMessage = String::Concat( outputMessage, String::Format( L"contains {0} child elements.", childrenCount ) );
      Console::WriteLine( outputMessage );
   }

   // Compare the first two occurrences of an attribute 
   // in the specified security element.
   static void CompareAttributes( SecurityElement^ xmlElement, String^ attributeName )
   {
      // Create a hash table containing the security element's attributes.
      Hashtable^ attributeKeys = xmlElement->Attributes;
      String^ attributeValue = attributeKeys[ attributeName ]->ToString();
      IEnumerator^ myEnum = xmlElement->Children->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         SecurityElement^ xmlChild = safe_cast<SecurityElement^>(myEnum->Current);
         if ( attributeValue->Equals( xmlChild->Attribute(attributeName) ) )
         {
            // The security elements were created at the exact same time.
         }
      }
   }

   // Convert the contents of the specified security element 
   // to hash codes stored in a hash table.
   static void ConvertToHashTable( SecurityElement^ xmlElement )
   {
      // Create a hash table to hold hash codes of the security elements.
      Hashtable^ xmlAsHash = gcnew Hashtable;
      int rootIndex = xmlElement->GetHashCode();
      xmlAsHash->Add( rootIndex, L"root" );
      int parentNum = 0;
      IEnumerator^ myEnum1 = xmlElement->Children->GetEnumerator();
      while ( myEnum1->MoveNext() )
      {
         SecurityElement^ xmlParent = safe_cast<SecurityElement^>(myEnum1->Current);
         parentNum++;
         xmlAsHash->Add( xmlParent->GetHashCode(), String::Format( L"parent{0}", parentNum ) );
         if ( (xmlParent->Children != nullptr) && (xmlParent->Children->Count > 0) )
         {
            int childNum = 0;
            IEnumerator^ myEnum2 = xmlParent->Children->GetEnumerator();
            while ( myEnum2->MoveNext() )
            {
               SecurityElement^ xmlChild = safe_cast<SecurityElement^>(myEnum2->Current);
               childNum++;
               xmlAsHash->Add( xmlChild->GetHashCode(), String::Format( L"child{0}", childNum ) );
            }
         }
      }
   }

   // Delete the specified security element if the current time is past
   // the time stored in the destroytime tag.
   static SecurityElement^ DestroyTree( SecurityElement^ xmlElement )
   {
      SecurityElement^ localXmlElement = xmlElement;
      SecurityElement^ destroyElement = localXmlElement->SearchForChildByTag( L"destroytime" );
      
      // Verify that a destroytime tag exists.
      if ( localXmlElement->SearchForChildByTag( L"destroytime" ) != nullptr )
      {
         // Retrieve the destroytime text to get the time 
         // the tree can be destroyed.
         String^ storedDestroyTime = localXmlElement->SearchForTextOfTag( L"destroytime" );
         DateTime destroyTime = DateTime::Parse( storedDestroyTime );
         if ( DateTime::Now > destroyTime )
         {
            localXmlElement = nullptr;
            Console::WriteLine( L"The XML security tree has been deleted." );
         }
      }

      
      // Verify that xmlElement is of type SecurityElement.
      if ( xmlElement->GetType()->Equals( System::Security::SecurityElement::typeid ) )
      {
         // Determine whether the localXmlElement object 
         // differs from xmlElement.
         if ( xmlElement->Equals( localXmlElement ) )
         {
            // Verify that the tags, attributes and children of the
            // two security elements are identical.
            if ( xmlElement->Equal( localXmlElement ) )
            {
               // Return the original security element.
               return xmlElement;
            }
         }
      }

      // Return the modified security element.
      return localXmlElement;
   }

};

int main()
{
   SecurityElementMembers^ sem = gcnew SecurityElementMembers;
   sem->TestSecurityElementMembers();
}

//
// This sample produces the following output:
// 
// The security XML tree named RootTag(XML security tree) 
// was created on 2/23/2004 1:23:00 PM and contains 2 child elements.
//<RootTag creationdate="2/23/2004 1:23:00 PM">XML security tree
//   <destroytime>2/23/2004 1:23:01 PM</destroytime>
//   <WindowsMembership.WindowsRole version="1.00"
//                                  creationdate="2/23/2004 1:23:00 PM">
//      <BabyElement>This is a child element.</BabyElement>
//
//This sample completed successfully; press Exit to continue.
using System;
using System.Security;
using System.Collections;

class SecurityElementMembers
{
    [STAThread]
    static void Main(string[] args)
    {
        SecurityElement xmlRootElement = 
            new SecurityElement("RootTag", "XML security tree");

        AddAttribute(xmlRootElement,"creationdate",DateTime.Now.ToString());
        AddChildElement(xmlRootElement,"destroytime",
            DateTime.Now.AddSeconds(1.0).ToString());

        SecurityElement windowsRoleElement = 
            new SecurityElement("WindowsMembership.WindowsRole");
        
        windowsRoleElement.AddAttribute("version","1.00");

        // Add a child element and a creationdate attribute.
        AddChildElement(windowsRoleElement,"BabyElement",
            "This is a child element");
        AddAttribute(windowsRoleElement,"creationdate",
            DateTime.Now.ToString());

        xmlRootElement.AddChild(windowsRoleElement);

        CompareAttributes(xmlRootElement, "creationdate");
        ConvertToHashTable(xmlRootElement);

        DisplaySummary(xmlRootElement);

        // Determine if the security element is too old to keep.
        xmlRootElement = DestroyTree(xmlRootElement);
        if (xmlRootElement != null)
        {
            string elementInXml = xmlRootElement.ToString();
            Console.WriteLine(elementInXml);
        }
        
        Console.WriteLine("This sample completed successfully; " +
            "press Enter to exit.");
        Console.ReadLine();
    }

    // Add an attribute to the specified security element.
    private static SecurityElement AddAttribute(
        SecurityElement xmlElement,
        string attributeName,
        string attributeValue)
    {
        if (xmlElement != null)
        {
            // Verify that the attribute name and value are valid XML formats.
            if (SecurityElement.IsValidAttributeName(attributeName) &&
                SecurityElement.IsValidAttributeValue(attributeValue))
            {
                // Add the attribute to the security element.
                xmlElement.AddAttribute(attributeName, attributeValue);
            }
        }
        return xmlElement;
    }

    // Add a child element to the specified security element.
    private static SecurityElement AddChildElement(
        SecurityElement parentElement,
        string tagName,
        string tagText)
    {
        if (parentElement != null)
        {
            // Ensure that the tag text is in valid XML format.
            if (!SecurityElement.IsValidText(tagText))
            {
                // Replace invalid text with valid XML text 
                // to enforce proper XML formatting.
                tagText = SecurityElement.Escape(tagText);
            }

            // Determine whether the tag is in valid XML format.
            if (SecurityElement.IsValidTag(tagName))
            {
                SecurityElement childElement;
                childElement = parentElement.SearchForChildByTag(tagName);

                if (childElement != null)
                {
                    String elementText;
                    elementText = parentElement.SearchForTextOfTag(tagName);

                    if (!elementText.Equals(tagText))
                    {
                        // Add child element to the parent security element.
                        parentElement.AddChild(
                            new SecurityElement(tagName, tagText));
                    }
                }
                else 
                {
                    // Add child element to the parent security element.
                    parentElement.AddChild(
                        new SecurityElement(tagName, tagText));
                }
            }
        }
        return parentElement;
    }

    // Create and display a summary sentence 
    // about the specified security element.
    private static void DisplaySummary(SecurityElement xmlElement)
    {
        // Retrieve tag name for the security element.
        string xmlTreeName = xmlElement.Tag.ToString();

        // Retrieve tag text for the security element.
        string xmlTreeDescription = xmlElement.Text;
        
        // Retrieve value of the creationdate attribute.
        string xmlCreationDate = xmlElement.Attribute("creationdate");
        
        // Retrieve the number of children under the security element.
        string childrenCount = xmlElement.Children.Count.ToString();

        string outputMessage = "The security XML tree named " + xmlTreeName;
        outputMessage += "(" + xmlTreeDescription + ")";
        outputMessage += " was created on " + xmlCreationDate + " and ";
        outputMessage += "contains " + childrenCount + " child elements.";

        Console.WriteLine(outputMessage);
    }

    // Compare the first two occurrences of an attribute 
    // in the specified security element.
    private static void CompareAttributes(
        SecurityElement xmlElement, string attributeName)
    {
        // Create a hash table containing the security element's attributes.
        Hashtable attributeKeys = xmlElement.Attributes;
        string attributeValue = attributeKeys[attributeName].ToString();

        foreach(SecurityElement xmlChild in xmlElement.Children)
        {
            if (attributeValue.Equals(xmlChild.Attribute(attributeName)))
            {
                // The security elements were created at the exact same time.
            }
        }
    }

    // Convert the contents of the specified security element 
    // to hash codes stored in a hash table.
    private static void ConvertToHashTable(SecurityElement xmlElement)
    {
        // Create a hash table to hold hash codes of the security elements.
        Hashtable xmlAsHash = new Hashtable();
        int rootIndex = xmlElement.GetHashCode();
        xmlAsHash.Add(rootIndex, "root");

        int parentNum = 0;

        foreach(SecurityElement xmlParent in xmlElement.Children)
        {
            parentNum++;
            xmlAsHash.Add(xmlParent.GetHashCode(), "parent" + parentNum);
            if ((xmlParent.Children != null) && 
                (xmlParent.Children.Count > 0))
            {
                int childNum = 0;
                foreach(SecurityElement xmlChild in xmlParent.Children)
                {
                    childNum++;
                    xmlAsHash.Add(xmlChild.GetHashCode(), "child" + childNum);
                }
            }
        }
    }

    // Delete the specified security element if the current time is past
    // the time stored in the destroytime tag.
    private static SecurityElement DestroyTree(SecurityElement xmlElement)
    {
        SecurityElement localXmlElement = xmlElement;
        SecurityElement destroyElement = 
            localXmlElement.SearchForChildByTag("destroytime");

        // Verify that a destroytime tag exists.
        if (localXmlElement.SearchForChildByTag("destroytime") != null)
        {
            // Retrieve the destroytime text to get the time 
            // the tree can be destroyed.
            string storedDestroyTime =
                localXmlElement.SearchForTextOfTag("destroytime");

            DateTime destroyTime = DateTime.Parse(storedDestroyTime);
            if (DateTime.Now > destroyTime)
            {
                localXmlElement = null;
                Console.WriteLine("The XML security tree has been deleted.");
            }
        }

        // Verify that xmlElement is of type SecurityElement.
        if (xmlElement.GetType().Equals(
            typeof(System.Security.SecurityElement)))
        {
            // Determine whether the localXmlElement object 
            // differs from xmlElement.
            if (xmlElement.Equals(localXmlElement))
            {
                // Verify that the tags, attributes and children of the
                // two security elements are identical.
                if (xmlElement.Equal(localXmlElement))
                {
                    // Return the original security element.
                    return xmlElement;
                }
            }
        }

        // Return the modified security element.
        return localXmlElement;
    }
}
//
// This sample produces the following output:
// 
// The security XML tree named RootTag(XML security tree) 
// was created on 2/23/2004 1:23:00 PM and contains 2 child elements.
//<RootTag creationdate="2/23/2004 1:23:00 PM">XML security tree
//   <destroytime>2/23/2004 1:23:01 PM</destroytime>
//   <WindowsMembership.WindowsRole version="1.00"
//                                  creationdate="2/23/2004 1:23:00 PM">
//      <BabyElement>This is a child element.</BabyElement>
//
//This sample completed successfully; press Exit to continue.
Imports System
Imports System.Security
Imports System.Collections



Class SecurityElementMembers

    <STAThread()> _
    Shared Sub Main(ByVal args() As String)
        Dim xmlRootElement As New SecurityElement("RootTag", "XML security tree")
        AddAttribute(xmlRootElement, "creationdate", DateTime.Now.ToString())
        AddChildElement(xmlRootElement, "destroytime", DateTime.Now.AddSeconds(1.0).ToString())

        Dim windowsRoleElement As New SecurityElement("WindowsMembership.WindowsRole")
        windowsRoleElement.AddAttribute("version", "1.00")
        ' Add a child element and a creationdate attribute.
        AddChildElement(windowsRoleElement, "BabyElement", "This is a child element")
        AddAttribute(windowsRoleElement, "creationdate", DateTime.Now.ToString())

        xmlRootElement.AddChild(windowsRoleElement)
        CompareAttributes(xmlRootElement, "creationdate")
        ConvertToHashTable(xmlRootElement)

        DisplaySummary(xmlRootElement)

        ' Determine if the security element is too old to keep.
        xmlRootElement = DestroyTree(xmlRootElement)
        If Not (xmlRootElement Is Nothing) Then
            Dim elementInXml As String = xmlRootElement.ToString()
            Console.WriteLine(elementInXml)
        End If

        Console.WriteLine("This sample completed successfully; " + "press Enter to exit.")
        Console.ReadLine()

    End Sub 'Main


    ' Add an attribute to the specified security element.
    Private Shared Function AddAttribute(ByVal xmlElement As SecurityElement, ByVal attributeName As String, ByVal attributeValue As String) As SecurityElement
        If Not (xmlElement Is Nothing) Then
            ' Verify that the attribute name and value are valid XML formats.
            If SecurityElement.IsValidAttributeName(attributeName) AndAlso SecurityElement.IsValidAttributeValue(attributeValue) Then
                ' Add the attribute to the security element.
                xmlElement.AddAttribute(attributeName, attributeValue)
            End If
        End If
        Return xmlElement

    End Function 'AddAttribute


    ' Add a child element to the specified security element.
    Private Shared Function AddChildElement(ByVal parentElement As SecurityElement, ByVal tagName As String, ByVal tagText As String) As SecurityElement
        If Not (parentElement Is Nothing) Then
            ' Ensure that the tag text is in valid XML format.
            If Not SecurityElement.IsValidText(tagText) Then
                ' Replace invalid text with valid XML text 
                ' to enforce proper XML formatting.
                tagText = SecurityElement.Escape(tagText)
            End If

            ' Determine whether the tag is in valid XML format.
            If SecurityElement.IsValidTag(tagName) Then
                Dim childElement As SecurityElement
                childElement = parentElement.SearchForChildByTag(tagName)
                If Not (childElement Is Nothing) Then
                    Dim elementText As String
                    elementText = parentElement.SearchForTextOfTag(tagName)
                    If Not elementText.Equals(tagText) Then
                        ' Add child element to the parent security element.
                        parentElement.AddChild(New SecurityElement(tagName, tagText))
                    End If
                Else
                    ' Add child element to the parent security element.
                    parentElement.AddChild(New SecurityElement(tagName, tagText))
                End If
            End If
        End If
        Return parentElement

    End Function 'AddChildElement


    ' Create and display a summary sentence 
    ' about the specified security element.
    Private Shared Sub DisplaySummary(ByVal xmlElement As SecurityElement)
        ' Retrieve tag name for the security element.
        Dim xmlTreeName As String = xmlElement.Tag.ToString()
        ' Retrieve tag text for the security element.
        Dim xmlTreeDescription As String = xmlElement.Text
        ' Retrieve value of the creationdate attribute.
        Dim xmlCreationDate As String = xmlElement.Attribute("creationdate")
        ' Retrieve the number of children under the security element.
        Dim childrenCount As String = xmlElement.Children.Count.ToString()
        Dim outputMessage As String = "The security XML tree named " + xmlTreeName
        outputMessage += "(" + xmlTreeDescription + ")"
        outputMessage += " was created on " + xmlCreationDate + " and "
        outputMessage += "contains " + childrenCount + " child elements."

        Console.WriteLine(outputMessage)

    End Sub 'DisplaySummary


    ' Compare the first two occurrences of an attribute 
    ' in the specified security element.
    Private Shared Sub CompareAttributes(ByVal xmlElement As SecurityElement, ByVal attributeName As String)
        ' Create a hash table containing the security element's attributes.
        Dim attributeKeys As Hashtable = xmlElement.Attributes
        Dim attributeValue As String = attributeKeys(attributeName).ToString()
        Dim xmlChild As SecurityElement
        For Each xmlChild In xmlElement.Children
            If attributeValue.Equals(xmlChild.Attribute(attributeName)) Then
            End If
        Next xmlChild
        ' The security elements were created at the exact same time.
    End Sub 'CompareAttributes


    ' Convert the contents of the specified security element 
    ' to hash codes stored in a hash table.
    Private Shared Sub ConvertToHashTable(ByVal xmlElement As SecurityElement)
        ' Create a hash table to hold hash codes of the security elements.
        Dim xmlAsHash As New Hashtable()
        Dim rootIndex As Integer = xmlElement.GetHashCode()
        xmlAsHash.Add(rootIndex, "root")
        Dim parentNum As Integer = 0

        Dim xmlParent As SecurityElement
        For Each xmlParent In xmlElement.Children
            parentNum += 1
            xmlAsHash.Add(xmlParent.GetHashCode(), "parent" + parentNum.ToString())
            If Not (xmlParent.Children Is Nothing) AndAlso xmlParent.Children.Count > 0 Then
                Dim childNum As Integer = 0
                Dim xmlChild As SecurityElement
                For Each xmlChild In xmlParent.Children
                    childNum += 1
                    xmlAsHash.Add(xmlChild.GetHashCode(), "child" + childNum.ToString())
                Next xmlChild
            End If
        Next xmlParent

    End Sub 'ConvertToHashTable


    ' Delete the specified security element if the current time is past
    ' the time stored in the destroytime tag.
    Private Shared Function DestroyTree(ByVal xmlElement As SecurityElement) As SecurityElement
        Dim localXmlElement As SecurityElement = xmlElement
        Dim destroyElement As SecurityElement = localXmlElement.SearchForChildByTag("destroytime")

        ' Verify that a destroytime tag exists.
        If Not (localXmlElement.SearchForChildByTag("destroytime") Is Nothing) Then
            ' Retrieve the destroytime text to get the time 
            ' the tree can be destroyed.
            Dim storedDestroyTime As String = localXmlElement.SearchForTextOfTag("destroytime")
            Dim destroyTime As DateTime = DateTime.Parse(storedDestroyTime)
            If DateTime.Now > destroyTime Then
                localXmlElement = Nothing
                Console.WriteLine("The XML security tree has been deleted.")
            End If
        End If

        ' Verify that xmlElement is of type SecurityElement.
        If xmlElement.GetType().Equals(GetType(System.Security.SecurityElement)) Then
            ' Determine whether the localXmlElement object 
            ' differs from xmlElement.
            If xmlElement.Equals(localXmlElement) Then
                ' Verify that the tags, attributes and children of the
                ' two security elements are identical.
                If xmlElement.Equal(localXmlElement) Then
                    ' Return the original security element.
                    Return xmlElement
                End If
            End If
        End If

        ' Return the modified security element.
        Return localXmlElement

    End Function 'DestroyTree
End Class 'SecurityElementMembers
'
' This sample produces the following output:
' 
' The security XML tree named RootTag(XML security tree) 
' was created on 2/23/2004 1:23:00 PM and contains 2 child elements.
'<RootTag creationdate="2/23/2004 1:23:00 PM">XML security tree
'   <destroytime>2/23/2004 1:23:01 PM</destroytime>
'   <WindowsMembership.WindowsRole version="1.00"
'                                  creationdate="2/23/2004 1:23:00 PM">
'      <BabyElement>This is a child element.</BabyElement>
'
'This sample completed successfully; press Exit to continue.

備註

這個類別被要為簡單 XML 物件模型以便使用於安全性系統,而不做為一般的 XML 物件模型的輕量型實作。This class is intended to be a lightweight implementation of a simple XML object model for use within the security system, and not for use as a general XML object model. 這份文件會假設 XML 的基本知識。This documentation assumes a basic knowledge of XML.

簡單的 XML 物件模型的項目是由下列部分所組成:The simple XML object model for an element consists of the following parts:

  • 標記是項目名稱。The tag is the element name.

  • 屬性是在項目上的零或多個名稱/值屬性配對。The attributes are zero or more name/value attribute pairs on the element.

  • 子系是零或多個項目巢狀<tag></tag>The children are zero or more elements nested within <tag> and </tag>.

強烈建議屬性型 XML 表示法用來表示安全性項目和其值。It is strongly suggested that attribute based XML representation is used to express security elements and their values. 這表示項目的屬性會表示為屬性和屬性值會表示為屬性值。This means properties of an element are expressed as attributes and property values are expressed as attribute values. 避免使用巢狀標記內的文字。Avoid nesting text within tags. 針對任何<tag>text</tag>表示的型別表示<tag value="text"/>通常使用。For any <tag>text</tag> representation a representation of type <tag value="text"/> is usually available. 使用此屬性為基礎的 XML 表示法時,會增加可讀性,並可讓您輕鬆的 WMI 可攜性產生的 XML 序列化。Using this attribute-based XML representation increases readability and allows easy WMI portability of the resulting XML serialization.

屬性名稱必須是其中一個字元或更久的時間,而且不得nullAn attribute name must be one character or longer, and cannot be null. 如果使用項目為基礎的值表示法時,也就字串文字的項目null以表示<tag/>形成; 文字分隔,否則為<tag></tag>語彙基元。If element-based value representation is used, elements with a text string that is null are represented in the <tag/> form; otherwise, text is delimited by the <tag> and </tag> tokens. 這兩種形式可以結合屬性,會顯示如果有的話。Both forms can be combined with attributes, which are shown if present.

標記、 屬性和文字的項目,如果有的話,會一律區分大小寫。The tags, attributes, and text of elements, if present, are always case-sensitive. XML 格式包含引號,並在必要時,會逸出。The XML form contains quotations and escapes where necessary. 在 XML 中包含的使用無效的字元的字串值會導致ArgumentExceptionString values that include characters invalid for use in XML result in an ArgumentException. 這些規則適用於所有屬性和方法。These rules apply to all properties and methods.

注意

基於效能考量,項目編碼為 XML 文字格式,而不是在每個集合的屬性或方法時,才會檢查字元的有效性。For performance reasons, character validity is only checked when the element is encoded into XML text form, and not on every set of a property or method. 靜態方法可以讓明確檢查在需要時。Static methods allow explicit checking where needed.

建構函式

SecurityElement(String) SecurityElement(String) SecurityElement(String) SecurityElement(String)

使用指定的標記,初始化 SecurityElement 類別的新執行個體。Initializes a new instance of the SecurityElement class with the specified tag.

SecurityElement(String, String) SecurityElement(String, String) SecurityElement(String, String) SecurityElement(String, String)

使用指定的標記和文字來初始化 SecurityElement 類別的新執行個體。Initializes a new instance of the SecurityElement class with the specified tag and text.

屬性

Attributes Attributes Attributes Attributes

取得或設定 XML 項目的屬性當做名稱/值組。Gets or sets the attributes of an XML element as name/value pairs.

Children Children Children Children

取得或設定 XML 項目的子項目陣列。Gets or sets the array of child elements of the XML element.

Tag Tag Tag Tag

取得或設定 XML 項目的標記名稱。Gets or sets the tag name of an XML element.

Text Text Text Text

取得或設定 XML 項目中的文字。Gets or sets the text within an XML element.

方法

AddAttribute(String, String) AddAttribute(String, String) AddAttribute(String, String) AddAttribute(String, String)

加入名稱/值屬性至 XML 項目。Adds a name/value attribute to an XML element.

AddChild(SecurityElement) AddChild(SecurityElement) AddChild(SecurityElement) AddChild(SecurityElement)

加入子項目至 XML 項目。Adds a child element to the XML element.

Attribute(String) Attribute(String) Attribute(String) Attribute(String)

依名稱尋找 XML 項目中的屬性。Finds an attribute by name in an XML element.

Copy() Copy() Copy() Copy()

建立並傳回目前 SecurityElement 物件的相同複本。Creates and returns an identical copy of the current SecurityElement object.

Equal(SecurityElement) Equal(SecurityElement) Equal(SecurityElement) Equal(SecurityElement)

比較兩個 XML 項目物件是否相等。Compares two XML element objects for equality.

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

判斷指定的物件是否等於目前的物件。Determines whether the specified object is equal to the current object.

(Inherited from Object)
Escape(String) Escape(String) Escape(String) Escape(String)

將字串中無效的 XML 字元以它們的相等有效 XML 字元來取代。Replaces invalid XML characters in a string with their valid XML equivalent.

FromString(String) FromString(String) FromString(String) FromString(String)

從 XML 編碼字串建立安全性項目。Creates a security element from an XML-encoded string.

GetHashCode() GetHashCode() GetHashCode() GetHashCode()

做為預設雜湊函式。Serves as the default hash function.

(Inherited from Object)
GetType() GetType() GetType() GetType()

取得目前執行個體的 TypeGets the Type of the current instance.

(Inherited from Object)
IsValidAttributeName(String) IsValidAttributeName(String) IsValidAttributeName(String) IsValidAttributeName(String)

判斷字串是否為有效的屬性名稱。Determines whether a string is a valid attribute name.

IsValidAttributeValue(String) IsValidAttributeValue(String) IsValidAttributeValue(String) IsValidAttributeValue(String)

判斷字串是否為有效的屬性值。Determines whether a string is a valid attribute value.

IsValidTag(String) IsValidTag(String) IsValidTag(String) IsValidTag(String)

判斷字串是否為有效的標記。Determines whether a string is a valid tag.

IsValidText(String) IsValidText(String) IsValidText(String) IsValidText(String)

判斷字串是否可做為 XML 項目內的有效文字。Determines whether a string is valid as text within an XML element.

MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

建立目前 Object 的淺層複本 (Shallow Copy)。Creates a shallow copy of the current Object.

(Inherited from Object)
SearchForChildByTag(String) SearchForChildByTag(String) SearchForChildByTag(String) SearchForChildByTag(String)

依它的標記名稱搜尋子項目。Finds a child by its tag name.

SearchForTextOfTag(String) SearchForTextOfTag(String) SearchForTextOfTag(String) SearchForTextOfTag(String)

依它的標記名稱尋找子項目,並傳回所包含的文字。Finds a child by its tag name and returns the contained text.

ToString() ToString() ToString() ToString()

產生 XML 項目的字串表示以及它的構成屬性、子項目和文字。Produces a string representation of an XML element and its constituent attributes, child elements, and text.

適用於