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Exception Constructor (SerializationInfo, StreamingContext)

Initializes a new instance of the Exception class with serialized data.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

protected Exception(
	SerializationInfo info,
	StreamingContext context


Type: System.Runtime.Serialization.SerializationInfo

The SerializationInfo that holds the serialized object data about the exception being thrown.

Type: System.Runtime.Serialization.StreamingContext

The StreamingContext that contains contextual information about the source or destination.


The info parameter is null.


The class name is null or HResult is zero (0).

This constructor is called during deserialization to reconstitute the exception object transmitted over a stream. For more information, see [<topic://cpconSerialization>].

The following code example defines a derived serializable Exception class. The code forces a divide-by-0 error and then creates an instance of the derived exception using the (SerializationInfo, StreamingContext) constructor. The code serializes the instance to a file, deserializes the file into a new exception, which it throws, and then catches and displays the exception's data.

// Example for the Exception( SerializationInfo, StreamingContext ) 
// constructor and the Exception.GetObjectData( SerializationInfo,  
// StreamingContext ) method. 
using System;
using System.IO;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Soap;
using System.Security.Permissions;

namespace NDP_UE_CS
    // Define a serializable derived exception class.
    class SecondLevelException : Exception, ISerializable
        // This public constructor is used by class instantiators. 
        public SecondLevelException( string message, Exception inner ) :
            base( message, inner )
            HelpLink = "";
            Source = "Exception_Class_Samples";

        // This protected constructor is used for deserialization. 
        protected SecondLevelException( SerializationInfo info, 
            StreamingContext context ) :
                base( info, context )
        { }

        // GetObjectData performs a custom serialization.
        public override void GetObjectData( SerializationInfo info, 
            StreamingContext context ) 
            // Change the case of two properties, and then use the  
            // method of the base class.
            HelpLink = HelpLink.ToLower( );
            Source = Source.ToUpper( );

            base.GetObjectData( info, context );

    class SerializationDemo 
        public static void Main() 
                "This example of the Exception constructor " +
                "and Exception.GetObjectData\nwith Serialization" +
                "Info and StreamingContext parameters " +
                "generates \nthe following output.\n" );

                // This code forces a division by 0 and catches the  
                // resulting exception. 
                    int  zero = 0;
                    int  ecks = 1 / zero;
                catch( Exception ex )
                    // Create a new exception to throw again.
                    SecondLevelException newExcept =
                        new SecondLevelException( 
                            "Forced a division by 0 and threw " +
                            "another exception.", ex );

                        "Forced a division by 0, caught the " +
                        "resulting exception, \n" +
                        "and created a derived exception:\n" );
                    Console.WriteLine( "HelpLink: {0}", 
                        newExcept.HelpLink );
                    Console.WriteLine( "Source:   {0}", 
                        newExcept.Source );

                    // This FileStream is used for the serialization.
                    FileStream stream = 
                        new FileStream( "NewException.dat", 
                            FileMode.Create );

                        // Serialize the derived exception.
                        SoapFormatter formatter = 
                            new SoapFormatter( null,
                                new StreamingContext( 
                                    StreamingContextStates.File ) );
                        formatter.Serialize( stream, newExcept );

                        // Rewind the stream and deserialize the  
                        // exception.
                        stream.Position = 0;
                        SecondLevelException deserExcept = 
                                formatter.Deserialize( stream );

                            "\nSerialized the exception, and then " +
                            "deserialized the resulting stream " +
                            "into a \nnew exception. " +
                            "The deserialization changed the case " +
                            "of certain properties:\n" );

                        // Throw the deserialized exception again. 
                        throw deserExcept;
                    catch( SerializationException se )
                        Console.WriteLine( "Failed to serialize: {0}", 
                            se.ToString( ) );
                        stream.Close( );
            catch( Exception ex )
                Console.WriteLine( "HelpLink: {0}", ex.HelpLink );
                Console.WriteLine( "Source:   {0}", ex.Source );

                Console.WriteLine( );
                Console.WriteLine( ex.ToString( ) );

This example of the Exception constructor and Exception.GetObjectData
with SerializationInfo and StreamingContext parameters generates
the following output.

Forced a division by 0, caught the resulting exception,
and created a derived exception:

Source:   Exception_Class_Samples

Serialized the exception, and then deserialized the resulting stream into a
new exception. The deserialization changed the case of certain properties:


NDP_UE_CS.SecondLevelException: Forced a division by 0 and threw another except
ion. ---> System.DivideByZeroException: Attempted to divide by zero.
   at NDP_UE_CS.SerializationDemo.Main()
   --- End of inner exception stack trace ---
   at NDP_UE_CS.SerializationDemo.Main()

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0