XmlAttributeOverrides.Item[] 属性

定义

命名空间:

System.Xml.Serialization

程序集:

System.Xml.XmlSerializer.dll

获取表示替代属性的集合的对象。

重载

Item[Type]	获取与指定的基类类型相关联的对象。
Item[Type, String]	获取与指定（基类）类型相关联的对象。 成员参数指定被替代的基类成员。

Item[Type]

Source:

XmlAttributeOverrides.cs

获取与指定的基类类型相关联的对象。

public:
 property System::Xml::Serialization::XmlAttributes ^ default[Type ^] { System::Xml::Serialization::XmlAttributes ^ get(Type ^ type); };

public System.Xml.Serialization.XmlAttributes? this[Type type] { get; }

member this.Item(Type) : System.Xml.Serialization.XmlAttributes

Default Public ReadOnly Property Item(type As Type) As XmlAttributes

参数

type

Type

与要检索的属性的集合相关联的基类 Type。

属性值

XmlAttributes

表示重写属性集合的 XmlAttributes。

示例

以下示例创建 XmlAttributeOverrides 对象、 XmlAttributes 对象和 XmlRootAttribute 对象。 该示例将 分配给 XmlRootAttributeXmlRoot 对象的 属性 XmlAttributes ，并将 对象 XmlAttributes 添加到 对象 XmlAttributeOverrides 。 最后，该示例通过将序列化类的 传递给 Type 对象来XmlAttributeOverrides获取 XmlAttributes 对象。 在此示例中， Type 为 Group。

// This is the class that will be serialized.
public ref class Group
{
public:
   String^ GroupName;

   [XmlAttributeAttribute]
   int GroupCode;
};

public ref class Sample
{
public:
   XmlSerializer^ CreateOverrider()
   {
      // Create an XmlSerializer with overriding attributes.
      XmlAttributes^ attrs = gcnew XmlAttributes;
      XmlAttributeOverrides^ xOver = gcnew XmlAttributeOverrides;
      XmlRootAttribute^ xRoot = gcnew XmlRootAttribute;

      // Set a new Namespace and ElementName for the root element.
      xRoot->Namespace = "http://www.cpandl.com";
      xRoot->ElementName = "NewGroup";
      attrs->XmlRoot = xRoot;
      xOver->Add( Group::typeid, attrs );

      // Get the XmlAttributes object, based on the type.
      XmlAttributes^ tempAttrs;
      tempAttrs = xOver[ Group::typeid ];

      // Print the Namespace and ElementName of the root.
      Console::WriteLine( tempAttrs->XmlRoot->Namespace );
      Console::WriteLine( tempAttrs->XmlRoot->ElementName );
      XmlSerializer^ xSer = gcnew XmlSerializer( Group::typeid,xOver );
      return xSer;
   }
};

// This is the class that will be serialized.
public class Group
{
   public string GroupName;
   [XmlAttribute]
   public int GroupCode;
}

public class Sample
{
public XmlSerializer CreateOverrider()
{
   // Create an XmlSerializer with overriding attributes.
   XmlAttributes attrs = new XmlAttributes();
   XmlAttributeOverrides xOver = new XmlAttributeOverrides();

   XmlRootAttribute xRoot = new XmlRootAttribute();
   // Set a new Namespace and ElementName for the root element.
   xRoot.Namespace = "http://www.cpandl.com";
   xRoot.ElementName = "NewGroup";
   attrs.XmlRoot = xRoot;

   xOver.Add(typeof(Group), attrs);

   // Get the XmlAttributes object, based on the type.
   XmlAttributes tempAttrs;
   tempAttrs = xOver[typeof(Group)];

   // Print the Namespace and ElementName of the root.
   Console.WriteLine(tempAttrs.XmlRoot.Namespace);
   Console.WriteLine(tempAttrs.XmlRoot.ElementName);

   XmlSerializer xSer = new XmlSerializer(typeof(Group), xOver);
   return xSer;
}
}

' This is the class that will be serialized.
Public Class Group
    Public GroupName As String
    <XmlAttribute()> Public GroupCode As Integer
End Class

Public Class Sample
    
    Public Function CreateOverrider() As XmlSerializer
        ' Create an XmlSerializer with overriding attributes.
        Dim attrs As New XmlAttributes()
        Dim xOver As New XmlAttributeOverrides()
        
        Dim xRoot As New XmlRootAttribute()
        ' Set a new Namespace and ElementName for the root element.
        xRoot.Namespace = "http://www.cpandl.com"
        xRoot.ElementName = "NewGroup"
        attrs.XmlRoot = xRoot
        
        xOver.Add(GetType(Group), attrs)
        
        ' Get the XmlAttributes object, based on the type.
        Dim tempAttrs As XmlAttributes
        tempAttrs = xOver(GetType(Group))
        
        ' Print the Namespace and ElementName of the root.
        Console.WriteLine(tempAttrs.XmlRoot.Namespace)
        Console.WriteLine(tempAttrs.XmlRoot.ElementName)
        
        Dim xSer As New XmlSerializer(GetType(Group), xOver)
        Return xSer
    End Function
End Class

注解

使用此重载可返回一个XmlAttributes对象，该对象包含 或 XmlTypeAttribute 对象的属性XmlRootAttribute。

XmlAttributes如果 对象包含替代 XmlArrayAttribute、、XmlArrayItemAttributeXmlElementAttribute、 XmlEnumAttribute或 XmlAttributeAttribute的对象，则必须使用指定重写成员和类型的重载。

另请参阅

• XmlAttributes
• XmlSerializer

Item[Type, String]

Source:

XmlAttributeOverrides.cs

获取与指定（基类）类型相关联的对象。 成员参数指定被替代的基类成员。

public:
 property System::Xml::Serialization::XmlAttributes ^ default[Type ^, System::String ^] { System::Xml::Serialization::XmlAttributes ^ get(Type ^ type, System::String ^ member); };

public System.Xml.Serialization.XmlAttributes? this[Type type, string member] { get; }

member this.Item(Type * string) : System.Xml.Serialization.XmlAttributes

Default Public ReadOnly Property Item(type As Type, member As String) As XmlAttributes

参数

type

Type

与所需属性的集合相关联的基类 Type。

member

String

指定要返回的 XmlAttributes 的替代成员名称。

属性值

XmlAttributes

表示重写属性集合的 XmlAttributes。

示例

以下示例创建 一个 XmlAttributeOverrides 对象、一个 XmlAttributes和 一个 XmlAttributeAttribute 对象。 该示例将 分配给 XmlAttributeAttributeXmlAttribute 对象的 属性 XmlAttributes ，并将 对象 XmlAttributes 添加到 对象 XmlAttributeOverrides 。 最后，该示例通过将序列化类和成员名称的 传递给 Type 对象来XmlAttributeOverrides获取 XmlAttributes 对象。

// This is the class that will be serialized.
public ref class Group
{
public:
   String^ GroupName;

   [XmlAttributeAttribute]
   int GroupCode;
};

public ref class Sample
{
public:
   XmlSerializer^ CreateOverrider()
   {
      // Create an XmlSerializer with overriding attributes.
      XmlAttributeOverrides^ xOver = gcnew XmlAttributeOverrides;

      /* Create an XmlAttributeAttribute object and set the 
            AttributeName property. */
      XmlAttributeAttribute^ xAtt = gcnew XmlAttributeAttribute;
      xAtt->AttributeName = "Code";

      /* Create a new XmlAttributes object and set the 
            XmlAttributeAttribute object to the XmlAttribute property. */
      XmlAttributes^ attrs = gcnew XmlAttributes;
      attrs->XmlAttribute = xAtt;

      /* Add the XmlAttributes to the XmlAttributeOverrides object. The
            name of the overridden attribute must be specified. */
      xOver->Add( Group::typeid, "GroupCode", attrs );

      // Get the XmlAttributes object for the type and member.
      XmlAttributes^ tempAttrs;
      tempAttrs = xOver[Group::typeid, "GroupCode"];
      Console::WriteLine( tempAttrs->XmlAttribute->AttributeName );

      // Create the XmlSerializer instance and return it.
      XmlSerializer^ xSer = gcnew XmlSerializer( Group::typeid,xOver );
      return xSer;
   }
};

// This is the class that will be serialized.
public class Group
{
   public string GroupName;
   [XmlAttribute]
   public int GroupCode;
}

public class Sample
{
public XmlSerializer CreateOverrider()
{
   // Create an XmlSerializer with overriding attributes.
   XmlAttributeOverrides xOver = new XmlAttributeOverrides();

   /* Create an XmlAttributeAttribute object and set the
   AttributeName property. */
   XmlAttributeAttribute xAtt = new XmlAttributeAttribute();
   xAtt.AttributeName = "Code";

   /* Create a new XmlAttributes object and set the
   XmlAttributeAttribute object to the XmlAttribute property. */
   XmlAttributes attrs = new XmlAttributes();
   attrs.XmlAttribute = xAtt;

   /* Add the XmlAttributes to the XmlAttributeOverrides object. The
   name of the overridden attribute must be specified. */
   xOver.Add(typeof(Group), "GroupCode", attrs);

   // Get the XmlAttributes object for the type and member.
   XmlAttributes tempAttrs;
   tempAttrs = xOver[typeof(Group), "GroupCode"];
   Console.WriteLine(tempAttrs.XmlAttribute.AttributeName);

   // Create the XmlSerializer instance and return it.
   XmlSerializer xSer = new XmlSerializer(typeof(Group), xOver);
   return xSer;
}
}

' This is the class that will be serialized.
Public Class Group
    Public GroupName As String
    <XmlAttribute()> Public GroupCode As Integer
End Class

Public Class Sample
    
    Public Function CreateOverrider() As XmlSerializer
        ' Create an XmlSerializer with overriding attributes.
        Dim xOver As New XmlAttributeOverrides()
        
        ' Create an XmlAttributeAttribute object and set the
        ' AttributeName property. 
        Dim xAtt As New XmlAttributeAttribute()
        xAtt.AttributeName = "Code"
        
        ' Create a new XmlAttributes object and set the
        ' XmlAttributeAttribute object to the XmlAttribute property. 
        Dim attrs As New XmlAttributes()
        attrs.XmlAttribute = xAtt
        
        ' Add the XmlAttributes to the XmlAttributeOverrides object. The
        ' name of the overridden attribute must be specified. 
        xOver.Add(GetType(Group), "GroupCode", attrs)
                
        ' Get the XmlAttributes object for the type and member.
        Dim tempAttrs As XmlAttributes
        tempAttrs = xOver(GetType(Group), "GroupCode")
        Console.WriteLine(tempAttrs.XmlAttribute.AttributeName)
        
        ' Create the XmlSerializer instance and return it.
        Dim xSer As New XmlSerializer(GetType(Group), xOver)
        Return xSer
    End Function
End Class

注解

使用此重载可返回一个 XmlAttributes 对象，该对象包含重写 XmlArrayAttribute、、XmlArrayItemAttributeXmlAttributeAttribute、 XmlElementAttribute或 XmlEnumAttribute的对象。 XmlAttributes如果 对象包含 XmlRootAttribute 或 XmlTypeAttribute，则必须使用仅指定重写类型的重载。

另请参阅

• XmlAttributes
• XmlSerializer