以下使用 Xml Linq
using System;
using System.Collections.Generic;
using System.Linq;
using System.Xml;
using System.Xml.Linq;
namespace ConsoleApp10
{
class Program
{
static void Main(string[] args)
{
string _SVG = @"<text xmlns=""http://www.w3.org/2000/svg"" xmlns:xlink=""http://www.w3.org/2000/svg"" xml:space=""preserve"" fill=""#ff0000"" stroke-width=""0"" x=""239.61"" y=""74.89"" font-size=""3.37"" opacity=""1.00"" font-family=""Arial Narrow"">3070119100</text>";
XDocument doc = XDocument.Parse(_SVG);
//to read from file
//XDocument doc = XDocument.Load(filename);
XNamespace ns = doc.Root.GetDefaultNamespace();
XNamespace xlink = doc.Root.GetNamespaceOfPrefix("xlink");
List<XElement> elementListText = doc.Descendants(ns + "text").ToList();
foreach(XElement element in elementListText)
{
string value = element.Value;
element.RemoveNodes();
XElement a = new XElement(ns + "a");
a.SetAttributeValue(ns + "xlink", "http://www.w3.org/1999/xlink");
a.SetAttributeValue(xlink + "href", "http://www.google.it");
a.SetValue(value);
}
//doc.Save(filename);
}
}
}