System.Xml.Schema.Compiler.IsElementFromElement C# (CSharp) Méthode

        private bool IsElementFromElement(XmlSchemaElement derivedElement, XmlSchemaElement baseElement) {
            if(! ((derivedElement.QualifiedName == baseElement.QualifiedName) &&
                 (baseElement.IsNillable || !derivedElement.IsNillable) &&
                 IsValidOccurrenceRangeRestriction(derivedElement, baseElement) &&
                 (baseElement.FixedValue == null || IsFixedEqual(baseElement.ElementDecl, derivedElement.ElementDecl) ) &&
                 ((derivedElement.ElementDecl.Block | baseElement.ElementDecl.Block) ==  derivedElement.ElementDecl.Block) &&
                 (derivedElement.ElementSchemaType != null) && (baseElement.ElementSchemaType != null) &&
                 XmlSchemaType.IsDerivedFrom(derivedElement.ElementSchemaType, baseElement.ElementSchemaType, ~(XmlSchemaDerivationMethod.Restriction | XmlSchemaDerivationMethod.List | XmlSchemaDerivationMethod.Union))) ) {

                restrictionErrorMsg = Res.GetString(Res.Sch_ElementFromElement, derivedElement.QualifiedName, baseElement.QualifiedName);    
                return false;
            }
            return true;
        }