XsdDataContractImporter Class

Definition

public ref class XsdDataContractImporter

public class XsdDataContractImporter

type XsdDataContractImporter = class

Public Class XsdDataContractImporter

Inheritance

Object

XsdDataContractImporter

Examples

The following example creates an XmlSchemaSet and calls the Import method to create a CodeCompileUnit. The CodeCompileUnit is then used to create both Visual C# and Visual Basic code files.

using System;
using System.CodeDom.Compiler;
using System.CodeDom;
using System.Runtime.Serialization;
using System.IO;
using System.Xml;
using System.Xml.Schema;
using System.Globalization;

namespace XsdContractImporterExample
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                XmlSchemaSet schemas = Export();
                CodeCompileUnit ccu = Import(schemas);
                CompileCode(ccu, "Person.cs");
                CompileCode(ccu, "Person.vb");
            }
            catch (Exception exc)
            {
                Console.WriteLine("{0}: {1}", exc.Message, exc.StackTrace);
            }
            finally
            {
                Console.WriteLine("Press <Enter> to end....");
                Console.ReadLine();
            }
        }

        static XmlSchemaSet Export()
        {
            XsdDataContractExporter ex = new XsdDataContractExporter();
            ex.Export(typeof(Person));
            return ex.Schemas;
        }
        static CodeCompileUnit Import(XmlSchemaSet schemas)
        {

            XsdDataContractImporter imp = new XsdDataContractImporter();

            // The EnableDataBinding option adds a RaisePropertyChanged method to
            // the generated code. The GenerateInternal causes code access to be
            // set to internal.
            ImportOptions iOptions = new ImportOptions();
            iOptions.EnableDataBinding = true;
            iOptions.GenerateInternal = true;
            imp.Options = iOptions;

            if (imp.CanImport(schemas))
            {
                imp.Import(schemas);
                return imp.CodeCompileUnit;
            }
            else
            {
                return null;
            }
        }
        static void CompileCode(CodeCompileUnit ccu, string sourceName)
        {
            CodeDomProvider provider = null;
            FileInfo sourceFile = new FileInfo(sourceName);
            // Select the code provider based on the input file extension, either C# or Visual Basic.
            if (sourceFile.Extension.ToUpper(CultureInfo.InvariantCulture) == ".CS")
            {
                provider = new Microsoft.CSharp.CSharpCodeProvider();
            }
            else if (sourceFile.Extension.ToUpper(CultureInfo.InvariantCulture) == ".VB")
            {
                provider = new Microsoft.VisualBasic.VBCodeProvider();
            }
            else
            {
                Console.WriteLine("Source file must have a .cs or .vb extension");
            }
            if (provider != null)
            {
                CodeGeneratorOptions options = new CodeGeneratorOptions();
                // Set code formatting options to your preference.
                options.BlankLinesBetweenMembers = true;
                options.BracingStyle = "C";

                StreamWriter sw = new StreamWriter(sourceName);
                provider.GenerateCodeFromCompileUnit(ccu, sw, options);
                sw.Close();
            }
        }
    }

    [DataContract]
    public class Person
    {
        [DataMember]
        public string FirstName;

        [DataMember]
        public string LastName;

        public Person(string newFName, string newLName)
        {
            FirstName = newFName;
            LastName = newLName;
        }
    }
}

Imports System.CodeDom.Compiler
Imports System.CodeDom
Imports System.Runtime.Serialization
Imports System.IO
Imports System.Xml
Imports System.Xml.Schema
Imports System.Globalization

Class Program
   
    Shared Sub Main(ByVal args() As String) 
        Try
            Dim schemas As XmlSchemaSet = Export()
            Dim ccu As CodeCompileUnit = Import(schemas)
            CompileCode(ccu, "Person.cs")
            CompileCode(ccu, "Person.vb")
        Catch exc As Exception
            Console.WriteLine("{0}: {1}", exc.Message, exc.StackTrace)
        Finally
            Console.WriteLine("Press <Enter> to end....")
            Console.ReadLine()
        End Try
    
    End Sub 
    
    Shared Function Export() As XmlSchemaSet 
        Dim ex As New XsdDataContractExporter()
        ex.Export(GetType(Person))
        Return ex.Schemas
    End Function
    Shared Function Import(ByVal schemas As XmlSchemaSet) As CodeCompileUnit 

        Dim imp As New XsdDataContractImporter()
       ' The EnableDataBinding option adds a RaisePropertyChanged method to
       ' the generated code. The GenerateInternal causes code access to be
       ' set to internal.
       Dim iOptions As New ImportOptions()
       iOptions.EnableDataBinding = true
       iOptions.GenerateInternal = true
       imp.Options = IOptions

        If imp.CanImport(schemas) Then
            imp.Import(schemas)
            Return imp.CodeCompileUnit
        Else
            Return Nothing
        End If
    End Function

    Shared Sub CompileCode(ByVal ccu As CodeCompileUnit, ByVal sourceName As String) 
        Dim provider As CodeDomProvider = Nothing
        Dim sourceFile As New FileInfo(sourceName)
        ' Select the code provider based on the input file extension, either C# or Visual Basic.
        If sourceFile.Extension.ToUpper(CultureInfo.InvariantCulture) = ".CS" Then
            provider = New Microsoft.CSharp.CSharpCodeProvider()
        ElseIf sourceFile.Extension.ToUpper(CultureInfo.InvariantCulture) = ".VB" Then
            provider = New Microsoft.VisualBasic.VBCodeProvider()
        Else
            Console.WriteLine("Source file must have a .cs or .vb extension")
        End If
        If Not (provider Is Nothing) Then
            Dim options As New CodeGeneratorOptions()
            ' Set code formatting options to your preference. 
            options.BlankLinesBetweenMembers = True
            options.BracingStyle = "C"
            
            Dim sw As New StreamWriter(sourceName)
            provider.GenerateCodeFromCompileUnit(ccu, sw, options)
            sw.Close()
        End If
    
    End Sub
End Class

<DataContract()>  _
Public Class Person
    <DataMember()>  _
    Public FirstName As String
    
    <DataMember()>  _
    Public LastName As String
    
    
    Public Sub New(ByVal newFName As String, ByVal newLName As String) 
        FirstName = newFName
        LastName = newLName
    
    End Sub 
End Class

Remarks

Use the XsdDataContractImporter if you are creating a Web service that must interoperate with an existing Web service, or to create data contract types from XML schemas. XsdDataContractImporter will transform a set of XML schemas and create the .NET Framework types that represent the data contract in a selected programming language. To create the code, use the classes in the System.CodeDom namespace.

Conversely, use the XsdDataContractExporter class when you have created a Web service that incorporates data represented by CLR types and when you need to export XML schemas for each data type to be consumed by other Web services. That is, XsdDataContractExporter transforms a set of CLR types into a set of XML schemas.

Constructors

Properties

Methods

Applies to

See also

• XsdDataContractExporter
• Using Data Contracts
• Types Supported by the Data Contract Serializer