ln.build/ln.build/semver/provider/DotNetProvider.cs

using System;
using System.Xml;
using ln.build.semver;

namespace ln.build.semver.provider
{

    public class DotNetProvider : Provider
    {
        public DotNetProvider(): base("dotnet")
        {}

        public override SemVersion GetVersion(string source)
        {
            XmlDocument projectFile = new XmlDocument();
            projectFile.Load(source);
            
            XmlNode nodeVersion = projectFile.SelectSingleNode("Project/PropertyGroup/Version");
            return SemVersion.Parse(nodeVersion.InnerText);
        }

        public override void SetVersion(string source, SemVersion version)
        {
            XmlDocument projectFile = new XmlDocument();
            projectFile.Load(source);
            
            XmlNode nodeVersion = projectFile.SelectSingleNode("Project/PropertyGroup/Version");
            nodeVersion.InnerText = version.ToString();

            projectFile.Save(source);
        }
    }

}