xml - 使用 VB.NET 循环遍历 XML 文件

Question

我在处理 XMl 文件时遇到问题。我想遍历（使用 VB.NET）文件并提取 OrderID 元素的所有值。

<?xml version="1.0"?>
<ListOrdersResponse xmlns="https://xxx.xxxxxx.com/Orders/999uuu777">
  <ListOrdersResult>
    <NextToken>XXXXXXXXXX</NextToken>
    <Orders>
      <Order>
        <ShipmentServiceLevelCategory>Standard</ShipmentServiceLevelCategory>
        <OrderId>ooooooooo</OrderId>
      </Order>
      <Order>
        <ShipmentServiceLevelCategory>Standard</ShipmentServiceLevelCategory>
        <OrderId>ujuujujuj</OrderId>
      </Order>
      </Orders>
    <CreatedBefore>2013-06-19T09:10:47Z</CreatedBefore>
  </ListOrdersResult>
  <ResponseMetadata>
    <RequestId>8e34f7d9-3af7-4490-801b-cccc7777yu</RequestId>
  </ResponseMetadata>
</ListOrdersResponse>

这是我正在尝试的代码，但它不会遍历每个订单

Dim doc As New XmlDocument()
doc.Load(file)
Dim nodelist As XmlNodeList = doc.SelectNodes(".//Orders/Order")
For Each node As XmlElement In nodelist
   console.writeline(node.SelectSingleNode("OrderID").InnerText)
Next

任何帮助将不胜感激。

Answer 1

试试这个：

doc.Load(file)
nodelist = doc.GetElementsByTagName("Order")

For Each node As XmlElement In nodelist
   Console.Writeline(node("OrderID").InnerText)
Next

Answer 2

我运行的获得两个订单的 xPath 表达式是//tns:Order

Dim doc As New XmlDocument()
doc.Load(file)
Dim nodelist As XmlNodeList = doc.SelectNodes("//tns:Order")
For Each node As XmlElement In nodelist
  '2 exist
Next