Question

我想阅读这篇XML：

<item_proto extended="true" version="1">
    <Item vnum="1" name="'y'" gb2312name="Treasure" type="9" subtype="0" weight="0" size="1" antiflag="0" flag="0" wearflag="0" immuneflag="0" gold="0" buy_price="0" limittype0="0" limitvalue0="0" limittype1="0" limitvalue1="0" applytype0="0" applyvalue0="0" applytype1="0" applyvalue1="0" applytype2="0" applyvalue2="0" value0="0" value1="0" value2="0" value3="0" value4="0" value5="0" socket0="0" socket1="0" socket2="0" socket3="0" socket4="0" socket5="0" refine_vnum="11" refine_set="11" magic_pct="0" specular="0" socket_pct="0" />
    <Item vnum="2" name="'l'" gb2312name="Key" type="0" subtype="0" weight="0" size="1" antiflag="0" flag="0" wearflag="0" immuneflag="0" gold="0" buy_price="0" limittype0="0" limitvalue0="0" limittype1="0" limitvalue1="0" applytype0="0" applyvalue0="0" applytype1="0" applyvalue1="0" applytype2="0" applyvalue2="0" value0="0" value1="0" value2="0" value3="0" value4="0" value5="0" socket0="0" socket1="0" socket2="0" socket3="0" socket4="0" socket5="0" refine_vnum="11" refine_set="11" magic_pct="0" specular="0" socket_pct="0" />
    <Item vnum="19" name="'e9'" gb2312name="Sword" type="1" subtype="0" weight="0" size="2" antiflag="32" flag="1" wearflag="16" immuneflag="0" gold="100" buy_price="750" limittype0="1" limitvalue0="0" limittype1="0" limitvalue1="0" applytype0="7" applyvalue0="22" applytype1="0" applyvalue1="0" applytype2="0" applyvalue2="0" value0="0" value1="15" value2="19" value3="13" value4="15" value5="63" socket0="0" socket1="64992" socket2="127" socket3="64976" socket4="21631" socket5="4855" refine_vnum="0" refine_set="0" magic_pct="15" specular="100" socket_pct="1" />
</item_proto>

如果可能，我想只阅读其中一个节点：gb2312name。

这是我试过的：

Dim doc As New XmlDocument() 
Dim root As XmlNode = doc.GetElementsByTagName("Item").Item(3) 

'Display the contents of the child nodes. 
If root.HasChildNodes Then 
    Dim i As Integer 

    For i = 0 To root.ChildNodes.Count - 1
        ListBox1.Items.Add(root.ChildNodes(i).InnerText) 
    Next i 
End If

Answer 1

让我们从可能导致异常的问题开始:(大多数）集合的索引从零开始，包括这个。因此，如果您想获得第三个<Item>，那就是.Item(2)（或只是(2)）：

Dim root As XmlNode = doc.GetElementsByTagName("Item")(2)

接下来，root.ChildNodes不包含属性，即使这样做，InnerText也不是正确的属性。幸运的是，Attributes exists你甚至不需要循环！（顺便说一句，如果你这样做，那将是一个For Each循环。）

ListBox1.Items.Add(root.Attributes("gb2312name"))

因此，如果您想从每个元素添加gb2312name，那么它将是：

For Each el In doc.GetElementsByTagName("Item")
    ListBox1.Items.Add(el.Attributes("gb2312name"))
Next

如何正确读取此XML？

1 个答案: