我搜索了帖子,但这让我烦恼: 我试图从XML中删除重复项并保持最新:
XML结构是:
<?xml version="1.0" encoding="utf-8"?>
<scanneditems>
<item>
<itemnumber>5701075006328</itemnumber>
<description>Item 1</description>
<timestamp>16-06-2017 10:40:39</timestamp>
</item>
<item>
<itemnumber>5701075006328</itemnumber>
<description>Item 1 duplicate</description>
<timestamp>08-06-2017 14:25:51</timestamp>
</item>
</scanneditems>
代码是:
XDocument xDoc = XDocument.Load(@"C:\\fixthis.xml");
var item = xDoc.Element("scanneditems")
.Elements("item")
.GroupBy(c => c.Element("itemnumber").Value)
.OrderByDescending(p => p.Elements("timestamp").ToString());
XDocument doc = new XDocument(new XElement("scanneditems", item));
doc.Save("C:\\fixedfile.xml");
问题:如何将每个副本的结果限制为最新?
答案 0 :(得分:0)
如果我理解正确,您需要从每个副本中取出最新项目
因此,在分组项目中使用OrderBy..
XDocument xDoc = XDocument.Load(@"C:\\fixthis.xml");
var items =
xDoc.Element("scanneditems")
.Elements("item")
.GroupBy(c => c.Element("itemnumber").Value)
.Select(g => g.OrderByDescending(c => c.Element("timestamp").Value).First());
var doc = new XDocument(new XElement("scanneditems", items));
doc.Save("C:\\fixedfile.xml");