BinaryFormatter.Deserialize 方法

定義

將資料流還原序列化至物件圖形。Deserializes a stream into an object graph.

多載

Deserialize(Stream)
已過時。

將指定的資料流還原序列化至物件圖形。Deserializes the specified stream into an object graph.

Deserialize(Stream, HeaderHandler)

將指定的資料流還原序列化至物件圖形。Deserializes the specified stream into an object graph. 所提供的 HeaderHandler 會處理該資料流中的任何標頭。The provided HeaderHandler handles any headers in that stream.

備註

重要

使用不信任的資料呼叫此方法,會造成安全性上的風險。Calling this method with untrusted data is a security risk. 呼叫此方法時,請一律使用信任的資料。Call this method only with trusted data. 如需詳細資訊,請參閱資料驗證For more information, see Data Validation.

Deserialize(Stream)

警告

BinaryFormatter serialization is obsolete and should not be used. See https://aka.ms/binaryformatter for more information.

將指定的資料流還原序列化至物件圖形。Deserializes the specified stream into an object graph.

public:
 virtual System::Object ^ Deserialize(System::IO::Stream ^ serializationStream);
[System.Obsolete("BinaryFormatter serialization is obsolete and should not be used. See https://aka.ms/binaryformatter for more information.", DiagnosticId="SYSLIB0011", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
public object Deserialize (System.IO.Stream serializationStream);
public object Deserialize (System.IO.Stream serializationStream);
[<System.Obsolete("BinaryFormatter serialization is obsolete and should not be used. See https://aka.ms/binaryformatter for more information.", DiagnosticId="SYSLIB0011", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
abstract member Deserialize : System.IO.Stream -> obj
override this.Deserialize : System.IO.Stream -> obj
abstract member Deserialize : System.IO.Stream -> obj
override this.Deserialize : System.IO.Stream -> obj
Public Function Deserialize (serializationStream As Stream) As Object

參數

serializationStream
Stream

要還原序列化物件圖形的來源資料流。The stream from which to deserialize the object graph.

傳回

Object

物件圖形的最上層 (根)。The top (root) of the object graph.

實作

屬性

例外狀況

serializationStreamnullThe serializationStream is null.

serializationStream 支援搜尋,但是其長度為 0。The serializationStream supports seeking, but its length is 0.

-或--or- 輸入資料流不代表格式正確的 BinaryFormatter 序列化承載。The input stream does not represent a well-formed BinaryFormatter serialized payload.

-或--or- 從輸入資料流將物件還原序列化時發生錯誤。An error occurred while deserializing an object from the input stream.

InnerException 屬性可能包含更多關於根本原因的資訊。The InnerException property may contain more information about the root cause.

呼叫端沒有必要的權限。The caller does not have the required permission.

ASP.NET 5.0 與更新版本:除非在專案檔中重新啟用 BinaryFormatter 功能,否則一律會擲回。ASP.NET 5.0 and later: Always thrown unless BinaryFormatter functionality is re-enabled in the project file. 如需詳細資訊,請參閱解決 BinaryFormatter 過時與停用錯誤For more information, see Resolving BinaryFormatter obsoletion and disablement errors.

範例

using namespace System;
using namespace System::IO;
using namespace System::Collections;
using namespace System::Runtime::Serialization::Formatters::Binary;
using namespace System::Runtime::Serialization;
ref class App
{
public:
   static void Serialize()
   {
      
      // Create a hashtable of values that will eventually be serialized.
      Hashtable^ addresses = gcnew Hashtable;
      addresses->Add( "Jeff", "123 Main Street, Redmond, WA 98052" );
      addresses->Add( "Fred", "987 Pine Road, Phila., PA 19116" );
      addresses->Add( "Mary", "PO Box 112233, Palo Alto, CA 94301" );
      
      // To serialize the hashtable (and its keys/values),  
      // you must first open a stream for writing. 
      // In this case we will use a file stream.
      FileStream^ fs = gcnew FileStream( "DataFile.dat",FileMode::Create );
      
      // Construct a BinaryFormatter and use it to serialize the data to the stream.
      BinaryFormatter^ formatter = gcnew BinaryFormatter;
      try
      {
         formatter->Serialize( fs, addresses );
      }
      catch ( SerializationException^ e ) 
      {
         Console::WriteLine( "Failed to serialize. Reason: {0}", e->Message );
         throw;
      }
      finally
      {
         fs->Close();
      }

   }

   static void Deserialize()
   {
      
      // Declare the hashtable reference.
      Hashtable^ addresses = nullptr;
      
      // Open the file containing the data that we want to deserialize.
      FileStream^ fs = gcnew FileStream( "DataFile.dat",FileMode::Open );
      try
      {
         BinaryFormatter^ formatter = gcnew BinaryFormatter;
         
         // Deserialize the hashtable from the file and 
         // assign the reference to our local variable.
         addresses = dynamic_cast<Hashtable^>(formatter->Deserialize( fs ));
      }
      catch ( SerializationException^ e ) 
      {
         Console::WriteLine( "Failed to deserialize. Reason: {0}", e->Message );
         throw;
      }
      finally
      {
         fs->Close();
      }

      
      // To prove that the table deserialized correctly, display the keys/values.
      IEnumerator^ myEnum = addresses->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         DictionaryEntry ^ de = safe_cast<DictionaryEntry ^>(myEnum->Current);
         Console::WriteLine( " {0} lives at {1}.", de->Key, de->Value );
      }
   }

};


[STAThread]
int main()
{
   App::Serialize();
   App::Deserialize();
   return 0;
}

using System;
using System.IO;
using System.Collections;
using System.Runtime.Serialization.Formatters.Binary;
using System.Runtime.Serialization;

public class App
{
    [STAThread]
    static void Main()
    {
        Serialize();
        Deserialize();
    }

    static void Serialize()
    {
        // Create a hashtable of values that will eventually be serialized.
        Hashtable addresses = new Hashtable();
        addresses.Add("Jeff", "123 Main Street, Redmond, WA 98052");
        addresses.Add("Fred", "987 Pine Road, Phila., PA 19116");
        addresses.Add("Mary", "PO Box 112233, Palo Alto, CA 94301");

        // To serialize the hashtable and its key/value pairs,
        // you must first open a stream for writing.
        // In this case, use a file stream.
        FileStream fs = new FileStream("DataFile.dat", FileMode.Create);

        // Construct a BinaryFormatter and use it to serialize the data to the stream.
        BinaryFormatter formatter = new BinaryFormatter();
        try
        {
            formatter.Serialize(fs, addresses);
        }
        catch (SerializationException e)
        {
            Console.WriteLine("Failed to serialize. Reason: " + e.Message);
            throw;
        }
        finally
        {
            fs.Close();
        }
    }

    static void Deserialize()
    {
        // Declare the hashtable reference.
        Hashtable addresses  = null;

        // Open the file containing the data that you want to deserialize.
        FileStream fs = new FileStream("DataFile.dat", FileMode.Open);
        try
        {
            BinaryFormatter formatter = new BinaryFormatter();

            // Deserialize the hashtable from the file and
            // assign the reference to the local variable.
            addresses = (Hashtable) formatter.Deserialize(fs);
        }
        catch (SerializationException e)
        {
            Console.WriteLine("Failed to deserialize. Reason: " + e.Message);
            throw;
        }
        finally
        {
            fs.Close();
        }

        // To prove that the table deserialized correctly,
        // display the key/value pairs.
        foreach (DictionaryEntry de in addresses)
        {
            Console.WriteLine("{0} lives at {1}.", de.Key, de.Value);
        }
    }
}
Imports System.IO
Imports System.Collections
Imports System.Runtime.Serialization.Formatters.Binary
Imports System.Runtime.Serialization


Module App

    Sub Main()
        Serialize()
        Deserialize()
    End Sub

    Sub Serialize()

        ' Create a hashtable of values that will eventually be serialized.
        Dim addresses As New Hashtable
        addresses.Add("Jeff", "123 Main Street, Redmond, WA 98052")
        addresses.Add("Fred", "987 Pine Road, Phila., PA 19116")
        addresses.Add("Mary", "PO Box 112233, Palo Alto, CA 94301")

        ' To serialize the hashtable (and its key/value pairs),  
        ' you must first open a stream for writing. 
        ' In this case, use a file stream.
        Dim fs As New FileStream("DataFile.dat", FileMode.Create)

        ' Construct a BinaryFormatter and use it to serialize the data to the stream.
        Dim formatter As New BinaryFormatter
        Try
            formatter.Serialize(fs, addresses)
        Catch e As SerializationException
            Console.WriteLine("Failed to serialize. Reason: " & e.Message)
            Throw
        Finally
            fs.Close()
        End Try
    End Sub



    Sub Deserialize()
        ' Declare the hashtable reference.
        Dim addresses As Hashtable = Nothing

        ' Open the file containing the data that you want to deserialize.
        Dim fs As New FileStream("DataFile.dat", FileMode.Open)
        Try
            Dim formatter As New BinaryFormatter

            ' Deserialize the hashtable from the file and 
            ' assign the reference to the local variable.
            addresses = DirectCast(formatter.Deserialize(fs), Hashtable)
        Catch e As SerializationException
            Console.WriteLine("Failed to deserialize. Reason: " & e.Message)
            Throw
        Finally
            fs.Close()
        End Try

        ' To prove that the table deserialized correctly, 
        ' display the key/value pairs.
        Dim de As DictionaryEntry
        For Each de In addresses
            Console.WriteLine("{0} lives at {1}.", de.Key, de.Value)
        Next
    End Sub
End Module

備註

若要成功還原序列化,資料流程中的目前位置必須在物件圖形的開頭。For successful deserialization, the current position in the stream must be at the beginning of the object graph.

重要

使用不信任的資料呼叫此方法,會造成安全性上的風險。Calling this method with untrusted data is a security risk. 呼叫此方法時,請一律使用信任的資料。Call this method only with trusted data. 如需詳細資訊,請參閱資料驗證For more information, see Data Validation.

適用於

Deserialize(Stream, HeaderHandler)

將指定的資料流還原序列化至物件圖形。Deserializes the specified stream into an object graph. 所提供的 HeaderHandler 會處理該資料流中的任何標頭。The provided HeaderHandler handles any headers in that stream.

public:
 virtual System::Object ^ Deserialize(System::IO::Stream ^ serializationStream, System::Runtime::Remoting::Messaging::HeaderHandler ^ handler);
public object Deserialize (System.IO.Stream serializationStream, System.Runtime.Remoting.Messaging.HeaderHandler handler);
abstract member Deserialize : System.IO.Stream * System.Runtime.Remoting.Messaging.HeaderHandler -> obj
override this.Deserialize : System.IO.Stream * System.Runtime.Remoting.Messaging.HeaderHandler -> obj
Public Function Deserialize (serializationStream As Stream, handler As HeaderHandler) As Object

參數

serializationStream
Stream

要還原序列化物件圖形的來源資料流。The stream from which to deserialize the object graph.

handler
HeaderHandler

處理在 serializationStream 中任何標頭的 HeaderHandlerThe HeaderHandler that handles any headers in the serializationStream. 可以是 nullCan be null.

傳回

Object

物件圖形的已還原序列化物件或最上層物件 (根)。The deserialized object or the top object (root) of the object graph.

實作

例外狀況

serializationStreamnullThe serializationStream is null.

serializationStream 支援搜尋,但是其長度為 0。The serializationStream supports seeking, but its length is 0.

-或--or- 目標型別是 Decimal,但是值在 Decimal 型別的範圍之外。The target type is a Decimal, but the value is out of range of the Decimal type.

呼叫端沒有必要的權限。The caller does not have the required permission.

備註

標頭只用于特定的遠端應用程式。Headers are used only for specific remoting applications.

為了讓還原序列化成功,資料流程中的目前位置必須在物件圖形的開頭。In order for deserialization to succeed the current position in the stream must be at the beginning of the object graph.

重要

使用不信任的資料呼叫此方法,會造成安全性上的風險。Calling this method with untrusted data is a security risk. 呼叫此方法時,請一律使用信任的資料。Call this method only with trusted data. 如需詳細資訊,請參閱資料驗證For more information, see Data Validation.

適用於