通过.NET Framework类以编程方式使用XSD.exe工具功能（从XSD架构生成类）？

Question

我想从XML XSD Schema生成一个类，就像您可以使用Xsd.exe tool一样。

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

有没有办法通过使用.NET Framework中的类而不是使用独立工具来执行此操作？

Answer 1

无耻地从here借：

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); 
       } 
      } 
     } 
    } 
}