Introducing XML serialization

The following items can be serialized usingXmlserializerClass:

• Public read/write properties and fields of public classes

• Classes that implementIcollectionOrIenumerable

  Note
  Only collections are serialized, not public properties.

• XmlelementObjects

• XmlnodeObjects

• DatasetObjects

Example code for icollection:

 Using  System;  Using  System. IO; Using  System. collections;  Using  System. xml. serialization;  Public   Class  Test {  Static   Void  Main () {test T = New  Test (); T. serializecollection (  "  Coll. xml  " );}  Private   Void Serializecollection ( String  Filename) {employees EMPs = New  Employees ();  //  Note that only the collection is serialized -- not  //  Collectionname or any other public property of the class. EMPs. collectionname = "  Employees "  ; Employee john100 = New Employee ( "  John  " , "  100xxx  "  ); EMPs. Add (john100); xmlserializer x = New Xmlserializer ( Typeof  (Employees); textwriter writer = New Streamwriter (filename); X. serialize (writer, EMPs );}}  Public   Class  Employees: icollection {  Public   String  Collectionname;  Private Arraylist emparray = New  Arraylist ();  Public Employee This [ Int  Index] { Get { Return  (Employee) emparray [Index];}  Public   Void Copyto (array, Int  Index) {emparray. copyto (A, index );}  Public   Int  Count {  Get { Return  Emparray. Count ;}}  Public  Object  Syncroot {  Get { Return   This  ;}}  Public   Bool  Issynchronized {  Get { Return   False  ;}}  Public  Ienumerator getenumerator (){ Return  Emparray. getenumerator ();}  Public   Void  Add (employee newemployee) {emparray. Add (newemployee );}}  Public   Class  Employee {  Public   String  Empname;  Public   String  Empid;  Public Employee (){}  Public Employee ( String Empname, String  Empid) {empname = Empname; empid = Empid ;}} 

The serialization XML looks like:

 <?  XML version = "1.0" encoding = "UTF-8"  ?>  <  Arrayofemployee  Xmlns: xsi = "Http://www.w3.org/2001/XMLSchema-instance"  Xmlns: XSD  = "Http://www.w3.org/2001/XMLSchema"  >    <  Employee  >      <  Empname  > John </  Empname  >      <  Empid  > 100xxx </  Empid  >    </  Employee  >  </  Arrayofemployee  > 

Dataset XML serialization example:

 Private   Void Serializedataset ( String  Filename) {xmlserializer Ser = New Xmlserializer (Typeof  (Dataset ));  //  Creates a dataset; adds a table, column, and ten rows. Dataset DS = New Dataset ( "  Mydataset  "  ); Datatable t = New Datatable ( "  Table1  "  ); Datacolumn C =New Datacolumn ( "  Thing  "  ); T. Columns. Add (c); DS. Tables. Add (t); datarow R;  For ( Int I = 0 ; I < 10 ; I ++ ) {R = T. newrow (); R [  0 ] = "  Thing " + I; T. Rows. Add (r);} textwriter writer = New  Streamwriter (filename); Ser. serialize (writer, DS); writer. Close ();} 

Xmlelement or xmlnode XML serialization code example:

 Private   Void Serializeelement ( String  Filename) {xmlserializer Ser = New Xmlserializer ( Typeof  (Xmlelement); xmlelement myelement =New Xmldocument (). createelement ( "  Myelement  " , "  NS  "  ); Myelement. innertext = "  Hello World  "  ; Textwriter writer = New  Streamwriter (filename); Ser. serialize (writer, myelement); writer. Close ();} Private   Void Serializenode ( String  Filename) {xmlserializer Ser = New Xmlserializer ( Typeof  (Xmlnode); xmlnode mynode = New  Xmldocument (). createnode (xmlnodetype. element,  "  Mynode  " , "  NS "  ); Mynode. innertext = "  Hello Node  "  ; Textwriter writer = New  Streamwriter (filename); Ser. serialize (writer, mynode); writer. Close ();} 

You also can control the XML serialization by attribute. And the attributes which can control the XML serialization.