使用 LINQ 从 xml 中删除元素 [英] delete element from xml using LINQ

问题描述

我有一个 xml 文件，例如:

I've a xml file like:

<starting>
   <start>
      <site>mushfiq.com</site>
      <site>mee.con</site>
      <site>ttttt.co</site>
      <site>jkjhkhjkh</site>
      <site>jhkhjkjhkhjkhjkjhkh</site>
     <site>dasdasdasdasdasdas</site>
 </start>
</starting>

现在我需要删除任何 <site>...</site> 并且值将从文本框中随机给出.

Now I need to delete any <site>...</site> and value will randomly be given from a textbox.

这是我的代码:

XDocument doc = XDocument.Load(@"AddedSites.xml");                
var deleteQuery = from r in doc.Descendants("start") where r.Element("site").Value == txt.Text.Trim() select r;
foreach (var qry in deleteQuery)
{
    qry.Element("site").Remove();
}
doc.Save(@"AddedSites.xml");

如果我把第一个元素的值放在文本框中，那么它可以删除它，但是如果我把除了第一个元素的值之外的任何元素值都不能删除！我需要输入任何元素的任何值...因为它可以是第 2 个元素或第 3 个或第 4 个等等....任何人都可以帮助我吗?

If I put the value of first element in the textbox then it can delete it, but if I put any value of element except the first element's value it could not able to delete! I need I'll put any value of any element...as it can be 2nd element or 3rd or 4th and so on.... can anyone help me out?

推荐答案

好的，通过进一步的编辑，你想做什么就更清楚了，而且碰巧它比你做的要容易得多，这要归功于Remove 扩展方法 在 IEnumerable<T>其中 T : XNode:

Okay, with further editing, it's clearer what you want to do, and as it happens it's significantly easier than you're making it, thanks to the Remove extension method on IEnumerable<T> where T : XNode:

string target = txt.Text.Trim();
doc.Descendants("start")
   .Elements("site")
   .Where(x => x.Value == target)
   .Remove();

这就是你所需要的.

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