C# Exception Exception(SerializationInfo, StreamingContext)

In this chapter you will learn:

Get to know Exception.Exception(SerializationInfo, StreamingContext)
Syntax for Exception.Exception(SerializationInfo, StreamingContext)
Parameter for Exception.Exception(SerializationInfo, StreamingContext)
Example - Exception.Exception(SerializationInfo, StreamingContext)

Description

Exception Exception(SerializationInfo, StreamingContext)initializes a new instance of the Exception class with serialized data.

Syntax

Exception.Exception(SerializationInfo, StreamingContext) has the following syntax.


protected Exception(
  SerializationInfo info,
  StreamingContext context
)

Parameters

Exception.Exception(SerializationInfo, StreamingContext) has the following parameters.

info - The SerializationInfo that holds the serialized object data about the exception being thrown.
context - The StreamingContext that contains contextual information about the source or destination.

Example

The following code example defines a derived serializable Exception class.


//  w  ww. j  a va2s  .com


using System;
using System.IO;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Soap;
using System.Security.Permissions;


    [Serializable()]
    class SecondLevelException : Exception, ISerializable
    {
        public SecondLevelException( string message, Exception inner ) :
            base( message, inner )
        {
            HelpLink = "http://java2s.com";
            Source = "Exception_Class_Samples";
        }
        protected SecondLevelException( SerializationInfo info, 
            StreamingContext context ) :
                base( info, context )
        { }

        [SecurityPermissionAttribute(SecurityAction.Demand,SerializationFormatter=true)]
        public override void GetObjectData( SerializationInfo info, 
            StreamingContext context ) 
        {
            HelpLink = HelpLink.ToLower( );
            Source = Source.ToUpper( );
            base.GetObjectData( info, context );
        }
    }

    class SerializationDemo 
    {
        public static void Main() 
        {

            try
            {
                    SecondLevelException newExcept =
                        new SecondLevelException( 
                            "Forced a division by 0 and threw " +
                            "another exception.", new Exception("asdf") );

                    }
                    catch( SerializationException se )
                    {
                        Console.WriteLine( "Failed to serialize: {0}", 
                            se.ToString( ) );
                    }
                    finally
                    {
                        stream.Close( );
                    }
                }
            }
            catch( Exception ex )
            {
                Console.WriteLine( "HelpLink: {0}", ex.HelpLink );
                Console.WriteLine( "Source:   {0}", ex.Source );

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

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