C＃:在使用LINQ的另一个元素之前获取特定元素

Question

考虑XSD的以下片段：

    <xs:complexType name="AccountIdentification4ChoiceGPS">
    <xs:choice>
        <xs:element name="IBAN" type="IBAN2007Identifier">
            <xs:annotation>
                <xs:appinfo>
                    <xs:logicalname>IBAN</xs:logicalname>
                    <xs:additionalInfo>[A-Z]{2,2}[0-9]{2,2}[a-zA-Z0-9]{1,30}</xs:additionalInfo>
                    <xs:ISOType>(CashAccount20)</xs:ISOType>
                </xs:appinfo>
                <xs:documentation>Unambiguous identification of the account as International Bank Account Number (IBAN).</xs:documentation>
            </xs:annotation>
        </xs:element>
        <xs:element name="Othr" type="GenericAccountIdentification1GPS">
            <xs:annotation>
                <xs:appinfo>
                    <xs:logicalname>Other</xs:logicalname>
                    <xs:ISOType>(CashAccount20)</xs:ISOType>
                </xs:appinfo>
            </xs:annotation>
        </xs:element>
    </xs:choice>
</xs:complexType>

使用linq：如果我知道 element name="IBAN"我如何检索元素 <xs:complexType name="AccountIdentification4ChoiceGPS">如果我对XSD的内容不太了解。我可能知道的唯一认为是localname是"复杂型";

我在想：

    IEnumerable<XElement> elementAbove = xsdDocument.Descendants()
.Where(x=>x.Name.LocalName == "complexType")
.Select(Get here the value of the element that could be the parent or the parent's parent).

这是我卡住的地方。

Answer 1

尝试：

IEnumerable<XElement> elementAbove = xsdDocument.Descendants()
   .Where(x => x.Name.LocalName == "complexType" && x.Descendants().Any(y => y.Name.LocalName == "element" && y.Attributes().Any(z => z.Value == "IBAN")));