ObjectStateFormatter.Serialize 方法

定义

命名空间:

System.Web.UI

程序集:

System.Web.dll

序列化对象状态图。

重载

Serialize(Object)	将对象状态图序列化为 Base64 编码字符串。
Serialize(Stream, Object)	将对象状态图序列化为指定的 Stream 对象。

Serialize(Object)

将对象状态图序列化为 Base64 编码字符串。

public:
 System::String ^ Serialize(System::Object ^ stateGraph);

public string Serialize (object stateGraph);

member this.Serialize : obj -> string

Public Function Serialize (stateGraph As Object) As String

参数

stateGraph

Object

要序列化的对象。

返回

String

一个 Base-64 编码字符串，表示 stateGraph 参数的序列化对象状态。

示例

下面的代码示例演示如何使用 Serialize(Object) 该方法将一组控件属性的值序列化为 base64 编码的字符串。 稍后可以使用该方法反序列化 Deserialize(String) 字符串。

ArrayList controlProperties = new ArrayList(3);

controlProperties.Add( SortDirection );
controlProperties.Add( SelectedColumn );
controlProperties.Add( CurrentPage.ToString() );

// Create an ObjectStateFormatter to serialize the ArrayList.
ObjectStateFormatter formatter = new ObjectStateFormatter();

// Call the Serialize method to serialize the ArrayList to a Base64 encoded string.
string base64StateString = formatter.Serialize(controlProperties);

Dim controlProperties As New ArrayList(3)

controlProperties.Add(SortDirection)
controlProperties.Add(SelectedColumn)
controlProperties.Add(CurrentPage.ToString())

' Create an ObjectStateFormatter to serialize the ArrayList.
Dim formatter As New ObjectStateFormatter()

' Call the Serialize method to serialize the ArrayList to a Base64 encoded string.
Dim base64StateString As String = formatter.Serialize(controlProperties)

注解

使用 Serialize 该方法序列化的任何对象图都可以使用 Deserialize 该方法反序列化。 该方法 Serialize(Object) 用于将对象状态图序列化为 base64 编码的字符串形式。

Serialize(Stream, Object)

将对象状态图序列化为指定的 Stream 对象。

public:
 void Serialize(System::IO::Stream ^ outputStream, System::Object ^ stateGraph);

public void Serialize (System.IO.Stream outputStream, object stateGraph);

member this.Serialize : System.IO.Stream * obj -> unit

Public Sub Serialize (outputStream As Stream, stateGraph As Object)

参数

outputStream

Stream

一个 Stream，ObjectStateFormatter 将指定对象的状态序列化为该流。

stateGraph

Object

要序列化的对象。

例外

ArgumentNullException

指定的 outputStream 为 null。

示例

下面的代码示例演示类如何检索实例 ObjectStateFormatter ，以使用 Serialize(Stream, Object) 该方法将视图状态和控制状态序列化为流。 此代码示例是为类提供的大型示例的 PageStatePersister 一部分。

//
// Persist any ViewState and ControlState.
//
public override void Save()
{

    if (ViewState != null || ControlState != null)
    {
        if (Page.Session != null)
        {
            Stream stateStream = GetSecureStream();

            StreamWriter writer = new StreamWriter(stateStream);

            IStateFormatter formatter = this.StateFormatter;
            Pair statePair = new Pair(ViewState, ControlState);

            // Serialize the statePair object to a string.
            string serializedState = formatter.Serialize(statePair);

            writer.Write(serializedState);
            writer.Close();
            stateStream.Close();
        }
        else
        {
            throw new InvalidOperationException("Session needed for StreamPageStatePersister.");
        }
    }
}

'
' Persist any ViewState and ControlState.
'
Public Overrides Sub Save()

    If Not (ViewState Is Nothing) OrElse Not (ControlState Is Nothing) Then
        If Not (Page.Session Is Nothing) Then

            Dim stateStream As Stream
            stateStream = GetSecureStream()

            ' Write a state string, using the StateFormatter.
            Dim writer As New StreamWriter(stateStream)

            Dim formatter As IStateFormatter
            formatter = Me.StateFormatter

            Dim statePair As New Pair(ViewState, ControlState)

            Dim serializedState As String
            serializedState = formatter.Serialize(statePair)

            writer.Write(serializedState)
            writer.Close()
            stateStream.Close()
        Else
            Throw New InvalidOperationException("Session needed for StreamPageStatePersister.")
        End If
    End If
End Sub

注解

使用该方法序列化 Serialize 的任何对象状态图都可以使用 Deserialize 该方法反序列化。 该方法 Serialize(Stream, Object) 用于将对象状态图序列化为二进制 Stream 对象。