c# - XmlSerializer InvalidOperationExc - 转换类型的已知问题

Question

我正在对 XSD.EXE 生成的类使用 XmlSerializer。

XmlSerializer serializer = new XmlSerializer(obj.GetType());

吐了

InvalidOperationException Unable to generate a temporary class (result=1). error CS0030: Cannot convert type 'itemOrderItemsItem[]' to 'itemOrderItemsItem' error CS0029: Cannot implicitly convert type 'itemOrderItemsItem' to 'itemOrderItemsItem[]'

fix (下面标记为 <!--fix...-->)说要向我的模式添加一些愚蠢的元素，但这不起作用。此修复已有五年历史。现在有解决办法了吗？

              <xs:sequence>
              <xs:element name="item" minOccurs="0" maxOccurs="unbounded">
                <xs:complexType>
                  <xs:sequence>
                    <xs:element name="model" type="xs:string" minOccurs="0" />
                    <xs:element name="description" type="xs:string" minOccurs="0" />
                    <xs:element name="material" type="xs:string" minOccurs="0" />
                    <xs:element name="lot" type="xs:string" minOccurs="0" />
                    <xs:element name="serial" type="xs:string" minOccurs="0" />
                    <xs:element name="transferQty" type="xs:string" minOccurs="0" />
                    <xs:element name="shipQty" type="xs:string" minOccurs="0" />
                  </xs:sequence>
                </xs:complexType>
              </xs:element>     
            </xs:sequence>
       <xs:attribute name="tmp" type="xs:string" /><!--fix...-->

Answer 1

如果您有表单的 XML

 <items>
    <item>
      <model>10</model>
      <description>Torque wrench</description>
      <material>100</material>
      <lot>3</lot>
      <serial></serial>
      <transferQty>1</transferQty>
      <shipQty></shipQty>
    </item>
    <item>
           //...
    </item>
    <item>
           //...
    </item>
  </items>

Xsd.exe 会生成一个 xsd:

<xs:element name="items" minOccurs="0" maxOccurs="unbounded">
              <xs:complexType>
                <xs:sequence>
                  <xs:element name="item" minOccurs="0" maxOccurs="unbounded">
                    <xs:complexType>
                      <xs:sequence>
                        <xs:element name="model" type="xs:string" minOccurs="0" />
                        <xs:element name="description" type="xs:string" minOccurs="0" />
                        <xs:element name="material" type="xs:string" minOccurs="0" />
                        <xs:element name="lot" type="xs:string" minOccurs="0" />
                        <xs:element name="serial" type="xs:string" minOccurs="0" />
                        <xs:element name="transferQty" type="xs:string" minOccurs="0" />
                        <xs:element name="shipQty" type="xs:string" minOccurs="0" />
                      </xs:sequence>
                    </xs:complexType>
                  </xs:element>
                </xs:sequence>
              </xs:complexType>
            </xs:element>

然后

xsd.exe "this.xsd" /c

生成一个带有二维数组 (items[][]) 的类。我只想要一个一维数组。我更改了第一行:

<xs:element name="items" minOccurs="0"><!--got rid of maxOccurs (which is what causes the issue)-->

现在可以了。猜猜序列化器只是在二维数组上呕吐。幸运的是我不需要它们。