Utilizzare in modo programmatico la funzionalità dello strumento XSD.exe (generare classi dallo schema XSD) tramite le classi .NET Framework?

Question

Voglio generare una classe da uno schema XML XSD, proprio come si può fare con lo Xsd.exe tool.

E.g. XSD.exe /namespace:Generated.Xsd_1 /classes /outputdir:..\Classes

C'è un modo per fare questo utilizzando le classi in .NET Framework invece di utilizzare lo strumento standalone?

Answer 1

spudoratamente preso in prestito da here:

using System; 
using System.IO; 
using System.Collections.Generic; 
using System.Reflection; 
using System.Text; 
using System.Xml; 
using System.Xml.Serialization; 
using System.Xml.Schema; 
using System.CodeDom; 
using System.CodeDom.Compiler; 

using Microsoft.CSharp; 

using NUnit.Framework; 

namespace XmlSchemaImporterTest 
{ 
    [TestFixture] 
    public class XsdToClassTests 
    { 
     // Test for XmlSchemaImporter 
     [Test] 
     public void XsdToClassTest() 
     { 
      // identify the path to the xsd 
      string xsdFileName = "Account.xsd"; 
      string path = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location); 
      string xsdPath = Path.Combine(path, xsdFileName); 

      // load the xsd 
      XmlSchema xsd; 
      using(FileStream stream = new FileStream(xsdPath, FileMode.Open, FileAccess.Read)) 
      { 
       xsd = XmlSchema.Read(stream, null); 
      } 
      Console.WriteLine("xsd.IsCompiled {0}", xsd.IsCompiled); 

      XmlSchemas xsds = new XmlSchemas(); 
      xsds.Add(xsd); 
      xsds.Compile(null, true); 
      XmlSchemaImporter schemaImporter = new XmlSchemaImporter(xsds); 

      // create the codedom 
      CodeNamespace codeNamespace = new CodeNamespace("Generated"); 
      XmlCodeExporter codeExporter = new XmlCodeExporter(codeNamespace); 

      List maps = new List(); 
      foreach(XmlSchemaType schemaType in xsd.SchemaTypes.Values) 
      { 
       maps.Add(schemaImporter.ImportSchemaType(schemaType.QualifiedName)); 
      } 
      foreach(XmlSchemaElement schemaElement in xsd.Elements.Values) 
      { 
       maps.Add(schemaImporter.ImportTypeMapping(schemaElement.QualifiedName)); 
      } 
      foreach(XmlTypeMapping map in maps) 
      { 
       codeExporter.ExportTypeMapping(map); 
      } 

      RemoveAttributes(codeNamespace); 

      // Check for invalid characters in identifiers 
      CodeGenerator.ValidateIdentifiers(codeNamespace); 

      // output the C# code 
      CSharpCodeProvider codeProvider = new CSharpCodeProvider(); 

      using(StringWriter writer = new StringWriter()) 
      { 
       codeProvider.GenerateCodeFromNamespace(codeNamespace, writer, new CodeGeneratorOptions()); 
       Console.WriteLine(writer.GetStringBuilder().ToString()); 
      } 

      Console.ReadLine(); 
     } 

     // Remove all the attributes from each type in the CodeNamespace, except 
     // System.Xml.Serialization.XmlTypeAttribute 
     private void RemoveAttributes(CodeNamespace codeNamespace) 
     { 
      foreach(CodeTypeDeclaration codeType in codeNamespace.Types) 
      { 
       CodeAttributeDeclaration xmlTypeAttribute = null; 
       foreach(CodeAttributeDeclaration codeAttribute in codeType.CustomAttributes) 
       { 
        Console.WriteLine(codeAttribute.Name); 
        if(codeAttribute.Name == "System.Xml.Serialization.XmlTypeAttribute") 
        { 
         xmlTypeAttribute = codeAttribute; 
        } 
       } 
       codeType.CustomAttributes.Clear(); 
       if(xmlTypeAttribute != null) 
       { 
        codeType.CustomAttributes.Add(xmlTypeAttribute); 
       } 
      } 
     } 
    } 
}