如何使用C#从xml文件读取，更新，删除数据 [英] how to read, update, delete data from and to xml file with C#

问题描述

我如何使用C#从xml文件中插入，读取，更新和删除数据?

how could i insert, read, update and delete data from xml file with using C#?

推荐答案

有多种方法可以实现相同的目的. >
如果要继续按顺序阅读，可以使用XmlReader.

如果要在特定位置读取/更新/删除/插入，可以使用两种方法
1. XmlDocument和XPath.
2. LinQ转XML

对于XmlDocument方法，首先声明变量并加载xml.

There are various ways to achieve the same.

If you want to keep reading sequentially, you can use XmlReader.

If you want to read/update/delete/insert at particular location, you can use two approaches
1. XmlDocument and XPath.
2. LinQ to XML

For XmlDocument approach, First you declare variable and load xml.

XmlDocument xDoc = new XmlDocument();
xDoc.Load("YourFile.Xml");

然后，你读起来就像

Then, you read like

string nodeValue = xDoc .DocumentElement.SelectSingleNode("NodeName").InnerText;

您可以更新值，例如

You can update value like

xDoc.DocumentElement.SelectSingleNode("NodeName").InnerText = newValue;

请注意，在上面的代码中，"NodeName实际上是Xpath.您可以像Node/ChildNode/GrandChildNode这样给它命名，等等.您可以在 ^ ]

希望能有所帮助.如果确实将其标记为答案/赞扬.

谢谢
Milind

Note, that in above code, "NodeName is actually Xpath. You can give it like Node/ChildNode/GrandChildNode and so on. You can find more details about xPath at http://www.w3schools.com/xpath/default.asp[^]

Hope that helps. If it does mark it as answer/upvote.

Thanks
Milind

更好，更简单的方法是利用LINQ TO XML进行插入，更新和删除

检查此处是否给出了LINQ TO XML的所有示例- http://msdn.microsoft.com/en-us /vstudio/bb688087.aspx [ ^ ]

Better and easy way to do is make use of LINQ TO XML to insert,update and delete

Check here all examples are given for LINQ TO XML - http://msdn.microsoft.com/en-us/vstudio/bb688087.aspx[^]

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