.netのxsdスキーマファイルから列挙値を抽出する

Question

.netを使用して、xsdスキーマファイルから要素の列挙制約値をプログラムで抽出する方法は？私は次のXSDから「ゴルフ」と「BMW」、「アウディ」を抽出したいのですが例えば

：

<xs:element name="car"> 
    <xs:simpleType> 
    <xs:restriction base="xs:string"> 
     <xs:enumeration value="Audi"/> 
     <xs:enumeration value="Golf"/> 
     <xs:enumeration value="BMW"/> 
    </xs:restriction> 
    </xs:simpleType> 
</xs:element> 

Answer 1

ありXmlSchemaクラスがあるが、それはきれいに見える...「楽しいです"と協力する。

xmlクエリで十分でしょうか？

XmlDocument doc = new XmlDocument(); 
doc.Load("Foo.xsd");    
XmlNamespaceManager mgr = new XmlNamespaceManager(doc.NameTable); 
mgr.AddNamespace("xx", "http://www.w3.org/2001/XMLSchema"); 
foreach (XmlElement el in doc.SelectNodes("//xx:element[@name='car'][1]/xx:simpleType/xx:restriction/xx:enumeration", mgr)) 
{ 
    Console.WriteLine(el.GetAttribute("value")); 
} 

Answer 2

また、スキーマ内のすべてのアイテムを反復することもできます。

次のコードは、XSDスキーマからデータを抽出するのに非常に便利です。 基本的には、SOMのオブジェクトの関数コールバックを呼び出します。 タイプが列挙型であることをチェックし、それに応じて処理するコールバックの実装を提供する必要があります。

 #region CallForEveryElement 
    public delegate void SchemaObjectFunction(XmlSchemaObject xso); 

    public static void CallForEveryElement(XmlSchema schema, SchemaObjectFunction function) 
    { 
     CallForEveryElementInternal(schema, function); 
    } 

    private static void CallForEveryElementInternal(XmlSchemaObject schemaObject, SchemaObjectFunction function) 
    { 
     if (schemaObject == null) 
      return; 

     function(schemaObject); 

     if (schemaObject is XmlSchema) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchema).Includes, function); 
      CallForEveryElementInternal((schemaObject as XmlSchema).Items, function); 
     } 
     if (schemaObject is XmlSchemaGroupBase) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaGroupBase).Items, function); 
     } 
     if (schemaObject is XmlSchemaAttribute) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaAttribute).SchemaType, function); 
     } 
     if (schemaObject is XmlSchemaAttributeGroup) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaAttributeGroup).AnyAttribute, function); 
      CallForEveryElementInternal((schemaObject as XmlSchemaAttributeGroup).Attributes, function); 
     } 
     if (schemaObject is XmlSchemaContentModel) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaContentModel).Content, function); 
     } 
     if (schemaObject is XmlSchemaComplexContentExtension) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaComplexContentExtension).AnyAttribute, function); 
      CallForEveryElementInternal((schemaObject as XmlSchemaComplexContentExtension).Attributes, function); 
      CallForEveryElementInternal((schemaObject as XmlSchemaComplexContentExtension).Particle, function); 
     } 
     if (schemaObject is XmlSchemaComplexContentRestriction) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaComplexContentRestriction).AnyAttribute, function); 
      CallForEveryElementInternal((schemaObject as XmlSchemaComplexContentRestriction).Attributes, function); 
      CallForEveryElementInternal((schemaObject as XmlSchemaComplexContentRestriction).Particle, function); 
     } 
     if (schemaObject is XmlSchemaComplexType) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaComplexType).AnyAttribute, function); 
      CallForEveryElementInternal((schemaObject as XmlSchemaComplexType).Attributes, function); 
      CallForEveryElementInternal((schemaObject as XmlSchemaComplexType).AttributeWildcard, function); 
      CallForEveryElementInternal((schemaObject as XmlSchemaComplexType).ContentModel, function); 
      CallForEveryElementInternal((schemaObject as XmlSchemaComplexType).ContentTypeParticle, function); 
      CallForEveryElementInternal((schemaObject as XmlSchemaComplexType).Particle, function); 
     } 
     if (schemaObject is XmlSchemaElement) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaElement).Constraints, function); 
      CallForEveryElementInternal((schemaObject as XmlSchemaElement).ElementSchemaType, function); 
      CallForEveryElementInternal((schemaObject as XmlSchemaElement).SchemaType, function); 
     } 
     if (schemaObject is XmlSchemaGroup) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaGroup).Particle, function); 
     } 
     if (schemaObject is XmlSchemaGroupBase) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaGroupBase).Items, function); 
     } 
     if (schemaObject is XmlSchemaGroupRef) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaGroupRef).Particle, function); 
     } 
     if (schemaObject is XmlSchemaImport) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaImport).Annotation, function); 
     } 
     if (schemaObject is XmlSchemaInclude) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaInclude).Annotation, function); 
     } 
     if (schemaObject is XmlSchemaRedefine) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaRedefine).Items, function); 
     } 
     if (schemaObject is XmlSchemaSimpleContentExtension) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaSimpleContentExtension).AnyAttribute, function); 
      CallForEveryElementInternal((schemaObject as XmlSchemaSimpleContentExtension).Attributes, function); 
     } 
     if (schemaObject is XmlSchemaSimpleContentRestriction) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaSimpleContentRestriction).AnyAttribute, function); 
      CallForEveryElementInternal((schemaObject as XmlSchemaSimpleContentRestriction).Attributes, function); 
      CallForEveryElementInternal((schemaObject as XmlSchemaSimpleContentRestriction).BaseType, function); 
      CallForEveryElementInternal((schemaObject as XmlSchemaSimpleContentRestriction).Facets, function); 
     } 
     if (schemaObject is XmlSchemaSimpleType) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaSimpleType).Content, function); 
     } 
     if (schemaObject is XmlSchemaSimpleTypeList) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaSimpleTypeList).BaseItemType, function); 
      CallForEveryElementInternal((schemaObject as XmlSchemaSimpleTypeList).ItemType, function); 
     } 
     if (schemaObject is XmlSchemaSimpleTypeRestriction) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaSimpleTypeRestriction).BaseType, function); 
      CallForEveryElementInternal((schemaObject as XmlSchemaSimpleTypeRestriction).Facets, function); 
     } 
     if (schemaObject is XmlSchemaSimpleTypeUnion) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaSimpleTypeUnion).BaseTypes, function); 
     } 
     if (schemaObject is XmlSchemaType) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaType).BaseXmlSchemaType, function); 
     } 
     if (schemaObject is XmlSchemaAnnotated) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaAnnotated).Annotation, function); 
     } 
     if (schemaObject is XmlSchemaAnnotation) 
     { 
      CallForEveryElementInternal((schemaObject as XmlSchemaAnnotation).Items, function); 
     } 
    } 

    private static void CallForEveryElementInternal(XmlSchemaObjectCollection schemaObjectCol, SchemaObjectFunction function) 
    { 
     foreach (XmlSchemaObject xso in schemaObjectCol) 
     { 
      CallForEveryElementInternal(xso, function); 
     } 
    } 

    #endregion