ObjectStateFormatter.Serialize 方法

定義

命名空間:

System.Web.UI

組件:

System.Web.dll

序列化物件狀態圖。

多載

Serialize(Object)	將物件狀態圖序列化為 Base64 編碼字串。
Serialize(Stream, Object)	將物件狀態圖序列化為指定的 Stream 物件。

Serialize(Object)

將物件狀態圖序列化為 Base64 編碼字串。

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

參數

stateGraph

Object

要序列化的物件。

傳回

String

Base-64 編碼字串，表示 stateGraph 參數的序列化物件狀態。

範例

下列程式碼範例示範如何使用 方法，將一組控制項屬性的值序列化為 base64 編碼字串 Serialize(Object) 。 字串可以在稍後使用 Deserialize(String) 方法還原序列化。

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)

備註

使用 Serialize 方法序列化的任何物件圖形都可以使用 Deserialize 方法還原序列化。 方法 Serialize(Object) 用來將物件狀態圖形序列化為 base64 編碼字串形式。

Serialize(Stream, Object)

將物件狀態圖序列化為指定的 Stream 物件。

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)

參數

outputStream

Stream

Stream，ObjectStateFormatter 序列化指定之物件狀態的目標。

stateGraph

Object

要序列化的物件。

例外狀況

ArgumentNullException

指定的 outputStream 為 null。

範例

下列程式碼範例示範類別如何使用 方法，擷取 ObjectStateFormatter 實例，將檢視狀態和控制狀態序列化至資料流程 Serialize(Stream, Object) 。 此程式碼範例是提供給 類別之較大範例的 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

備註

使用 Serialize 方法序列化的任何物件狀態圖都可以使用 Deserialize 方法還原序列化。 方法 Serialize(Stream, Object) 可用來將物件狀態圖表序列化為二進位 Stream 物件。