CodeDomSerializer 类
定义
重要
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将对象图序列化为一系列 CodeDOM 语句。 此类提供序列化程序的抽象基类。
public ref class CodeDomSerializer abstractpublic ref class CodeDomSerializer : System::ComponentModel::Design::Serialization::CodeDomSerializerBasepublic abstract class CodeDomSerializerpublic class CodeDomSerializer : System.ComponentModel.Design.Serialization.CodeDomSerializerBasetype CodeDomSerializer = classtype CodeDomSerializer = class
inherit CodeDomSerializerBasePublic MustInherit Class CodeDomSerializerPublic Class CodeDomSerializer
Inherits CodeDomSerializerBase- 继承
-
CodeDomSerializer
- 继承
- 派生
示例
下面的代码示例演示如何创建派生自 CodeDomSerializer的自定义 CodeDOM 序列化程序。
#using <System.Drawing.dll>
#using <System.dll>
#using <System.Design.dll>
using namespace System;
using namespace System::CodeDom;
using namespace System::ComponentModel;
using namespace System::ComponentModel::Design;
using namespace System::ComponentModel::Design::Serialization;
using namespace System::Drawing;
using namespace System::Windows::Forms;
namespace CodeDomSerializerSample
{
ref class MyComponent;
private ref class MyCodeDomSerializer: public CodeDomSerializer
{
public:
Object^ Deserialize( IDesignerSerializationManager^ manager, Object^ codeObject ) new
{
// This is how we associate the component with the serializer.
CodeDomSerializer^ baseClassSerializer = (CodeDomSerializer^)(
manager->GetSerializer(
MyComponent::typeid->BaseType, CodeDomSerializer::typeid ));
/* This is the simplest case, in which the class just calls the base class
to do the work. */
return baseClassSerializer->Deserialize( manager, codeObject );
}
Object^ Serialize( IDesignerSerializationManager^ manager, Object^ value ) new
{
/* Associate the component with the serializer in the same manner as with
Deserialize */
CodeDomSerializer^ baseClassSerializer = (CodeDomSerializer^)(
manager->GetSerializer(
MyComponent::typeid->BaseType, CodeDomSerializer::typeid ));
Object^ codeObject = baseClassSerializer->Serialize( manager, value );
/* Anything could be in the codeObject. This sample operates on a
CodeStatementCollection. */
if ( (CodeStatementCollection^)(codeObject) )
{
CodeStatementCollection^ statements = (CodeStatementCollection^)(codeObject);
// The code statement collection is valid, so add a comment.
String^ commentText = "This comment was added to this object by a custom serializer.";
CodeCommentStatement^ comment = gcnew CodeCommentStatement( commentText );
statements->Insert( 0, comment );
}
return codeObject;
}
};
[DesignerSerializer(CodeDomSerializerSample::MyCodeDomSerializer::typeid,
CodeDomSerializer::typeid)]
public ref class MyComponent: public Component
{
private:
String^ localProperty;
public:
MyComponent()
{
localProperty = "Component Property Value";
}
property String^ LocalProperty
{
String^ get()
{
return localProperty;
}
void set( String^ value )
{
localProperty = value;
}
}
};
}
using System;
using System.CodeDom;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.ComponentModel.Design.Serialization;
using System.Drawing;
using System.Windows.Forms;
namespace CodeDomSerializerSample
{
internal class MyCodeDomSerializer : CodeDomSerializer {
public override object Deserialize(IDesignerSerializationManager manager, object codeObject) {
// This is how we associate the component with the serializer.
CodeDomSerializer baseClassSerializer = (CodeDomSerializer)manager.
GetSerializer(typeof(MyComponent).BaseType, typeof(CodeDomSerializer));
/* This is the simplest case, in which the class just calls the base class
to do the work. */
return baseClassSerializer.Deserialize(manager, codeObject);
}
public override object Serialize(IDesignerSerializationManager manager, object value) {
/* Associate the component with the serializer in the same manner as with
Deserialize */
CodeDomSerializer baseClassSerializer = (CodeDomSerializer)manager.
GetSerializer(typeof(MyComponent).BaseType, typeof(CodeDomSerializer));
object codeObject = baseClassSerializer.Serialize(manager, value);
/* Anything could be in the codeObject. This sample operates on a
CodeStatementCollection. */
if (codeObject is CodeStatementCollection) {
CodeStatementCollection statements = (CodeStatementCollection)codeObject;
// The code statement collection is valid, so add a comment.
string commentText = "This comment was added to this object by a custom serializer.";
CodeCommentStatement comment = new CodeCommentStatement(commentText);
statements.Insert(0, comment);
}
return codeObject;
}
}
[DesignerSerializer(typeof(MyCodeDomSerializer), typeof(CodeDomSerializer))]
public class MyComponent : Component {
private string localProperty = "Component Property Value";
public string LocalProperty {
get {
return localProperty;
}
set {
localProperty = value;
}
}
}
}
Imports System.CodeDom
Imports System.ComponentModel
Imports System.ComponentModel.Design
Imports System.ComponentModel.Design.Serialization
Imports System.Drawing
Imports System.Windows.Forms
Namespace CodeDomSerializerSample
Friend Class MyCodeDomSerializer
Inherits CodeDomSerializer
Public Overrides Function Deserialize(ByVal manager As IDesignerSerializationManager, _
ByVal codeObject As Object) As Object
' This is how we associate the component with the serializer.
Dim baseClassSerializer As CodeDomSerializer = CType(manager.GetSerializer( _
GetType(MyComponent).BaseType, GetType(CodeDomSerializer)), CodeDomSerializer)
' This is the simplest case, in which the class just calls the base class
' to do the work.
Return baseClassSerializer.Deserialize(manager, codeObject)
End Function 'Deserialize
Public Overrides Function Serialize(ByVal manager As IDesignerSerializationManager, _
ByVal value As Object) As Object
' Associate the component with the serializer in the same manner as with
' Deserialize
Dim baseClassSerializer As CodeDomSerializer = CType(manager.GetSerializer( _
GetType(MyComponent).BaseType, GetType(CodeDomSerializer)), CodeDomSerializer)
Dim codeObject As Object = baseClassSerializer.Serialize(manager, value)
' Anything could be in the codeObject. This sample operates on a
' CodeStatementCollection.
If TypeOf codeObject Is CodeStatementCollection Then
Dim statements As CodeStatementCollection = CType(codeObject, CodeStatementCollection)
' The code statement collection is valid, so add a comment.
Dim commentText As String = "This comment was added to this object by a custom serializer."
Dim comment As New CodeCommentStatement(commentText)
statements.Insert(0, comment)
End If
Return codeObject
End Function 'Serialize
End Class
<DesignerSerializer(GetType(MyCodeDomSerializer), GetType(CodeDomSerializer))> _
Public Class MyComponent
Inherits Component
Private localProperty As String = "Component Property Value"
Public Property LocalProp() As String
Get
Return localProperty
End Get
Set(ByVal Value As String)
localProperty = Value
End Set
End Property
End Class
End Namespace
注解
可以实现自定义 CodeDomSerializer ，以控制在设计时为某一类型的组件生成组件初始化代码。
若要为类型实现自定义 CodeDomSerializer ，必须：
定义一个从 CodeDomSerializer 派生的类。
实现序列化或反序列化方法的方法重写。 (有关详细信息，请参阅以下信息。)
使用 DesignerSerializerAttribute将自定义CodeDomSerializer实现与某个类型的组件相关联。
若要实现用于为组件生成配置代码的序列化方法，请执行以下操作：
在派生自 CodeDomSerializer的类中，重写基类的相应序列化或反序列化方法。
如果希望默认序列化程序生成执行默认组件配置的代码语句，则必须获取并调用组件的基本序列化程序。 若要获取组件的基本序列化程序，请调用 GetSerializer 传递给方法重写的 IDesignerSerializationManager 的 方法。 向 GetSerializer 方法传递要序列化其配置的组件类型，以及正在请求的序列化程序基类型，即 CodeDomSerializer。 使用传递给方法重写的 和 对象，调用 IDesignerSerializationManager 在基本序列化程序上重写的同名方法。 如果要实现 Serialize 方法， Serialize 则基本序列化程序的 方法将返回 一个 对象。 此对象的类型取决于基本序列化程序的类型，该类型取决于要序列化其值的组件类型。 如果要实现 SerializeEvents、 SerializeProperties或 SerializePropertiesToResources 方法，则必须创建一个新的 CodeStatementCollection 以包含生成的代码语句，并将其传递给 方法。
如果已调用基序列化程序方法，则具有一个 CodeStatementCollection ，其中包含要生成的用于初始化组件的语句。 否则，应创建 。CodeStatementCollection 可以将表示在组件配置代码中生成的语句的对象添加到 CodeStatement 此集合。
返回表示 CodeStatementCollection 要生成的源代码以配置组件。
实施者说明
当从 CodeDomSerializer 继承时，必须重写下面的成员：Deserialize(IDesignerSerializationManager, Object) 和 Serialize(IDesignerSerializationManager, Object)。
构造函数
| CodeDomSerializer() |
初始化 CodeDomSerializer 类的新实例。 |
