如何将<Result>&lt;0.05</Result>转换为字节数组

byte[] Content = Encoding.Convert(Encoding.GetEncoding("ISO-8859-1"),Encoding.UTF8, fileAttachment.Content);
fileArray.Add(fileAttachment.Name, Content);

我需要从XML中获取值<0.05。但是在转换bytearray时,它返回空值。

下面给出了示例XML。

<TestMethod Variant="Ash Calculated DMA" Name="INT 1004">
  <TestParameter Name="Ash">
    <Result>&lt;0.01</Result>
    <Unit>% (m/m)</Unit>
    <SpecReport Name="Ash" SpecName="DMA 2005">
      <GroupCondition>Spec Met</GroupCondition>
    </SpecReport>
    <SpecReport Name="Ash" SpecName="DMA 2012">
      <GroupCondition>Spec Met</GroupCondition>
    </SpecReport>
  </TestParameter>
</TestMethod>