Question

How can I use Regex Replace with XML?

Assuming I have the given text below:

<test>Hello World</test>
<test1>Hello World</test1>
<test2>Hello World</test2>
<test3>Hellow World</test3>

How can I replace all “Hello World” tag values if the parent tag is not test tag?

Answer 1

Regex can be used for parsing XML since it is strict with its format but it is not recommended to use it

Use LINQ2XML

XElement doc=XElement.Load("yourXML.xml");
foreach(XElement elm in doc.Descendants().Elements().Where(x=>x.Name.LocalName!="test"))
{
     if(elm.Value=="hello World")
          elm.Value="";//replace here
}

doc.Save("yourXml.xml");