[英]How to delete selected node from XML in C#?
我是C#的XMl
我有问题...我想从我的XMl
文件中删除selected node
,在这里,我只是尝试使用此代码,但没有得到任何帮助,
private void btnDelete_Click(object sender, EventArgs e)
{
xdoc.Load(strFilename);
string Xpath = string.Format("root/{0}/{1}",_strProCat,_strProdType);
xdoc.SelectSingleNode(Xpath).RemoveAll();
xdoc.Save(strFilename);
MessageBox.Show("Deleted Successfully");
}
这是我的Xml文件
<root>
<product category="Soaps">
<product type="Washing">
<product name="Rin">
<Id>100</Id>
<AvailProducts>30</AvailProducts>
<Cost>20.00</Cost>
</product>
<product name="Tide">
<Id>101</Id>
<AvailProducts>30</AvailProducts>
<Cost>15.00</Cost>
</product>
</product>
</product>
</root>
我只想删除产品name="Tide"
Node
您可以简单地使用以下代码:
private void btnDelete_Click(object sender, EventArgs e)
{
var xDoc = XDocument.Load(strFilename);
foreach (var elem in xDoc.Document.Descendants("product"))
{
foreach (var attr in elem.Attributes("name"))
{
if (attr.Value.Equals("Tide"))
elem.RemoveAll();
}
}
xDoc.Save(destinationFilename);
MessageBox.Show("Deleted Successfully");
}
快乐编码...
这样的事情应该做到:
xdoc.Elements("product").Where(x=> x.Element("name").Value == "Tide").FirstOrDefault().Remove();
如果要使用带有XmlDocument
XPath
,则可以使用以下方法。
XmlDocument xdoc = new XmlDocument();
xdoc.Load(strFilename);
string Xpath = string.Format("root/product[@category='{0}']/product[@type='{1}']/product[@name='{2}']", "Soaps", "Washing", "Tide");
xdoc.SelectSingleNode(Xpath).RemoveAll();
xdoc.Save(strFilename);
更新资料
根据您的要求To Remove the empty node
,请尝试以下代码以删除空节点为:
XmlNodeList emptyElements = xdoc.SelectNodes(@"//*[not(node())]");
for (int i = emptyElements.Count - 1; i > -1; i--)
{
XmlNode nodeToBeRemoved = emptyElements[i];
nodeToBeRemoved.ParentNode.RemoveChild(nodeToBeRemoved);
}
现在,您最终的完整肉体代码将如下所示:
string Xpath = string.Format("root/product[@category='{0}']/product[@type='{1}']/product[@name='{2}']", "Soaps", "Washing", "Tide");
xdoc.SelectSingleNode(Xpath).RemoveAll();
XmlNodeList emptyElements = xdoc.SelectNodes(@"//*[not(node())]");
for (int i = emptyElements.Count - 1; i > -1; i--)
{
XmlNode nodeToBeRemoved = emptyElements[i];
nodeToBeRemoved.ParentNode.RemoveChild(nodeToBeRemoved);
}
xdoc.Save(strFilename);
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