.NET Object Serialization – How can I optimize the serialization process?
How can I optimize the serialization process?
The first call to a Web Service takes long because XmlSerializer generate an assembly optimized for each type in memory.
To optimize the serialization process pregeneration of serialization assembly with Visual Studio or sgen.exe is needed.
Implementing serialization separately can also increase the performance.
What is Formatters? Explain the binary formatter and the SOAP formatter.
A formatter determines the serialization format for objects.
.NET framework provides Binary formatter and SOAP formatter which inherit from the IFormatter interface
The Binary Formatter
It provides binary encoding for compact serialization for storage or socket-based network streams.
It is not appropriate for data to be passed through a firewall.
The SOAP Formatter
It provides formatting that can be used to enable objects to be serialized using the SOAP protocol.
The class is used for serialization through firewalls or diverse systems.
.NET Object Serialization – Difference between the SoapFormatter and the XmlSerializer
What is the difference between the SoapFormatter and the XmlSerializer?
SoapFormatter
SOAP formatter will actually take the field values of an object and store all of that information in the stream passed.
SoapFormatter is better to serialize arbitrary data
XmlSerializer
XML Serialization would just serialize the public properties of an object.
The XML Serializer is used typically for serializing simple types across web services
xmlserializer is better, more flexible and faster
.NET Object Serialization – How do you encapsulate the binary serialization?
How do you encapsulate the binary serialization?
public static void SerializeBinary( object o, string file_name)
{
using (FileStream fs = new FileStream(file_name, FileMode.Create)) {
BinaryFormatter fmt = new BinaryFormatter ();
fmt.Serialize(fs, o);
}
}
How do you implement a custom serialization?
CUSTOM SERIALIZATION implementation
public class A: ISerializable
{
private int a;
protected A(SerializationInfo si, StreamingContext sc)
{
this.a = serializationInfo.GetInt32("a");
}
public void ISerializable.GetObjectData(SerializationInfo si, StreamingContext sc)
{
si.AddValue("a", this.a);
}
}
What are the main advantages of binary serialization?
An object is stored in a file, a database or even in the memory. However, data to be transferred over a network needs to be in a linear form for which serialization and deserialization are used.
Advantage of serialization is the ability of an object to be serialized into a persistent or a non-persistent storage media and then reconstructing the same object later by de-serializing the object.
Also Binary Serialization is faster, supports complex objects too with read only properties and even circular references.
Explain about Serialization in .NET. Explain binary serialization and XML serialization
Explain about Serialization in .NET. Explain binary serialization and XML serialization
System.Runtime.Serialization namespace provides Serialization in .NET.
The IFormatter interface in the namespace contains Serialize and De-serialize methods that save and load data of a stream.
So we need stream as a container for the serialized object(s) and a formatter that serializes these objects onto the stream to implement serialization in .net.
Binary serialization is a mechanism that creates exact binary copy of the object onto the storage media by writing the data to the output stream such that it can be used to re-construct the object automatically.
XML serialization results in strongly typed classes with public properties and fields that are converted to a serial format for storage or transport. This XML stream conforms to a specific XML Schema definition language (XSD) document.
Explain why Serialization.
An object is stored in a file, a database or even in the memory. However, data to be transferred over a network needs to be in a linear form for which serialization and deserialization are used.
Advantage of serialization is the ability of an object to be serialized into a persistent or a non-persistent storage media and then reconstructing the same object later by de-serializing the object.
Remoting and Web Services depend heavily on Serialization and De-serialization.
Explain the components that comprise the binary serialization architecture.
To binary serialize an object we need a FileStream object,
Constructor: FileStream(file_name, FileMode.Create);
And
BinaryFormatter
Constructor: binaryFormatter.Serialize(fileStreamObject, object1);
.NET interview: What is the difference between the SoapFormatter and the XmlSerializer
SoapFormatter
SOAP formatter will actually take the field values of an object and store all of that information in the stream passed.
SoapFormatter is better to serialize arbitrary data
XmlSerializer
XML Serialization would just serialize the public properties of an object.
The XML Serializer is used typically for serializing simple types across web services
xmlserializer is better, more flexible and faster
.NET interview: Questions on serialization
How do you encapsulate the binary serialization?
public static void SerializeBinary( object o, string file_name)
{
using (FileStream fs = new FileStream(file_name, FileMode.Create)) {
BinaryFormatter fmt = new BinaryFormatter ();
fmt.Serialize(fs, o);
}
}
How do you implement a custom serialization?
CUSTOM SERIALIZATION implementation
public class A: ISerializable
{
private int a;
protected A(SerializationInfo si, StreamingContext sc)
{
this.a = serializationInfo.GetInt32("a");
}
public void ISerializable.GetObjectData(SerializationInfo si, StreamingContext sc)
{
si.AddValue("a", this.a);
}
}
.NET interview: What are the main advantages of binary serialization
An object is stored in a file, a database or even in the memory. However, data to be transferred over a network needs to be in a linear form for which serialization and deserialization are used.
Advantage of serialization is the ability of an object to be serialized into a persistent or a non-persistent storage media and then reconstructing the same object later by de-serializing the object.
Also Binary Serialization is faster, supports complex objects too with read only properties and even circular references.
