C# XmlSchema.FindElement方法代碼示例

		internal override int Validate(ValidationEventHandler h, XmlSchema schema)
		{
			if (IsValidated (schema.CompilationId))
				return errorCount;

			// See XML Schema Structures 3.6 for the complete description.

			// Element Declaration Properties Correct
			// 1. = 3.3.1 (modulo 5.3)

			// 3.3.1:
			// {annotation} is as is.
			// {name}, {target namespace}, {scope}, {disallowed substitution},
			// {substitution group exclusions} (handled the same as 'disallowed substitution')
			// and {identity-constraint-definitions} are Compile()d.
			// {value constraint} is going to be filled in step 2.

			// actual {nillable}, {abstract} 
			this.actualIsNillable = IsNillable;
			this.actualIsAbstract = IsAbstract;

			// Before determining element type, we need to validate substituting element
			if (this.SubstitutionGroup != XmlQualifiedName.Empty) {
				XmlSchemaElement substElem = substitutionGroupElement;
				if (substElem != null)
					substElem.Validate (h, schema);
			}

			// {type} from here
			XmlSchemaDatatype datatype = null;
			if (schemaType != null)
				elementType = schemaType;
			else if (SchemaTypeName != XmlQualifiedName.Empty) {
				XmlSchemaType type = schema.FindSchemaType (SchemaTypeName);
				if (type != null) {
					type.Validate (h, schema);
					elementType = type;
				}
				else if (SchemaTypeName == XmlSchemaComplexType.AnyTypeName)
					elementType = XmlSchemaComplexType.AnyType;
				else if (XmlSchemaUtil.IsBuiltInDatatypeName (SchemaTypeName)) {
					datatype = XmlSchemaDatatype.FromName (SchemaTypeName);
					if (datatype == null)
						error (h, "Invalid schema datatype was specified.");
					else
						elementType = datatype;
				}
				// otherwise, it might be missing sub components.
				else if (!schema.IsNamespaceAbsent (SchemaTypeName.Namespace))
					error (h, "Referenced element schema type " + SchemaTypeName + " was not found in the corresponding schema.");
			}
			else if (RefName != XmlQualifiedName.Empty)
			{
				XmlSchemaElement refElem = schema.FindElement (RefName);
				// If el is null, then it is missing sub components .
				if (refElem != null) {
					this.referencedElement = refElem;
					errorCount += refElem.Validate (h, schema);
				}
				// otherwise, it might be missing sub components.
				else if (!schema.IsNamespaceAbsent (RefName.Namespace))
					error (h, "Referenced element " + RefName + " was not found in the corresponding schema.");
			}
			
			// Otherwise if there are substitution group, then the type of the substitution group element.
			if (referencedElement == null) {
				if (elementType == null && this.substitutionGroupElement != null)
					elementType = substitutionGroupElement.ElementType;
				// Otherwise, the -ur type- definition.
				if (elementType == null)
					elementType = XmlSchemaComplexType.AnyType;
			}

			XmlSchemaType xsType = elementType as XmlSchemaType;
			if (xsType != null) {
				errorCount += xsType.Validate (h, schema);
				datatype = xsType.Datatype;
			}
			// basic {type} is now filled, except for derivation by {substitution group}.

			// {substitution group affiliation}
			// 3. subsitution group's type derivation check.
			if (this.SubstitutionGroup != XmlQualifiedName.Empty) {
				XmlSchemaElement substElem = schema.FindElement (SubstitutionGroup);
				// If el is null, then it is missing sub components .
				if (substElem != null) {
					XmlSchemaType substSchemaType = substElem.ElementType as XmlSchemaType;
					if (substSchemaType != null) {
						// 3.3.6 Properties Correct 3.
						if ((substElem.FinalResolved & XmlSchemaDerivationMethod.Substitution) != 0)
							error (h, "Substituted element blocks substitution.");
						if (xsType != null && (substElem.FinalResolved & xsType.DerivedBy) != 0)
							error (h, "Invalid derivation was found. Substituted element prohibits this derivation method: " + xsType.DerivedBy + ".");
					}
					XmlSchemaComplexType xsComplexType = xsType as XmlSchemaComplexType;
					if (xsComplexType != null)
						xsComplexType.ValidateTypeDerivationOK (substElem.ElementType, h, schema);
					else {
						XmlSchemaSimpleType xsSimpleType = xsType as XmlSchemaSimpleType;
						if (xsSimpleType != null)
//.........這裏部分代碼省略.........