CODEWITHSUNDEEP
c#xmlxelement
TWT
TWT

Reputation: 2571

Format XElement object

How can I format the contents of an XElement object?

I know that the output string is automatically formatted when calling .ToString(), but I want to add the whitespace nodes before converting the objects to string.

The intention is to format XML nodes in the model that is generated by the Microsoft.VisualStudio.XmlEditor classes.

Upvotes: 0

Views: 532

Answers (1)

Alexey Obukhov
Alexey Obukhov

Reputation: 854

Add text as child element (stored as XText):

   string xml = "<a><b>b</b></a>";
   XElement xdoc = XElement.Parse(xml);
   var b = xdoc.Element("b");
   b.AddBeforeSelf("  ");
   b.AddAfterSelf(new XText("   "));
   b.Add("  ");
   b.AddFirst("  ");
   Console.WriteLine(xdoc.ToString(SaveOptions.DisableFormatting));

Example of universal formating (any xml):

   string xml = "<a><b a=\"a\"><c><d>d</d></c></b><b a=\"a\"><c><d>d</d></c></b><e b=\"b\" a=\"a\"><f>f</f></e></a>";
   XElement xdoc = XElement.Parse(xml);
   Format(xdoc, 0);
   Console.WriteLine(xdoc.ToString(SaveOptions.DisableFormatting));

    static void Format(XElement x, int level)
    {
        foreach (var x1 in x.Elements())
            Format(x1, level + 1);
        if (level > 0)
        {
            x.AddBeforeSelf(Environment.NewLine + new string(' ', 2 * level));
            if (x.Parent.LastNode == x)
            {
                string ending = Environment.NewLine;
                if (level > 1)
                    ending += new string(' ', 2 * (level - 1));
                x.AddAfterSelf(ending);
            }
        }
    }

Upvotes: 2

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