Replace string in xml document

Question

How to write an xpath expression for :

 <script src="../../Scripts/ex.js"></script>

which will match the src value (../../Scripts/ex.js). Because i want to relace ../../Scripts with some other string.

i just want to select all script tags and replace there src values — Tom Rider
– Tom Rider, Commented Aug 29, 2012 at 8:08

Nitin Vijay · Accepted Answer · 2012-08-29 09:02:25Z

2

you can go with the following code.

 TextReader tr = new StringReader(response);
    XElement xelement = XElement.Load(tr);
    var Script = xelement.Descendants("script").ToList();
    if (Script.Count() > 0)
    {
     Script.First().Attribute("src").Value = "../../Scripts/NewEXWithReplace.js";

    }

edited Aug 29, 2012 at 9:02

answered Aug 29, 2012 at 8:19

Nitin Vijay

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3 Comments

L.B Over a year ago

You replace one string with another, not the src of script

user854301 Over a year ago

this way will not replace src in source document, result will be only new string instance, I assume that OP wants to replace this src in actual document not to obtain modified string.

user854301 Over a year ago

Now you replace only the first script but I think that you should chage only scripts that has ../../Scripts/ex.js in the src attribute also I think it should be done for all occurrences...

user854301 · Accepted Answer · 2012-08-29 09:06:13Z

1

LINQ to XML

var xdocument = XDocument.Load("XMLFile1.xml"); // you can use Parse or whatever
var elements = xdocument.XPathSelectElements("//script[@src='../../Scripts/ex.js']");
foreach (var element in elements)
{
  element.Attribute("src").SetValue("foo");
}

edited Aug 29, 2012 at 9:06

answered Aug 29, 2012 at 8:20

user854301

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Comments

user229044 · Accepted Answer · 2012-08-31 13:19:17Z

1

You can also use HtmlAgilityPack which allows you to access attributes usefully codeplex tool.

HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(@"<script src="../../Scripts/ex.js"></script>" />");

foreach (var script in doc.DocumentNode.Descendants("script"))
{

    script.Attributes["src"].Value = "loading.gif";
}

Another way is to use linq to xml

edited Aug 31, 2012 at 13:19

user229044♦

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answered Aug 29, 2012 at 8:18

Hassan Boutougha

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Comments

Tom Chantler · Accepted Answer · 2012-08-29 08:12:05Z

0

I know you said you wanted an XPath expression, but what about a simple string replace?

e.g.

string s = "<script src=\"../../Scripts/ex.js\"></script>";
string newS = s.Replace("../../Scripts", "../../Scripts2"); // Or whatever you want to replace it with

answered Aug 29, 2012 at 8:12

Tom Chantler

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2 Comments

KV Prajapati Over a year ago

OP wants to replace xxxxx string from the XML document.

Tom Chantler Over a year ago

Yes I understand that, but the XML document in question looks like an ASP.NET (or Razor) page. I'm just presenting a different way of solving the problem!

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