Sorts AssemblyBindingRedirects and Removes Duplicates

BindingRedirectFixer.cs

// ===========================================
// Fix AssemblyBindingRedirects
// Prototype by Robert McLaws (@robertmclaws)
// Last Updated 20 Aug 2017
// ===========================================

//RWM: Set these to your specific project.
var projectFolder = @"D:\GitHub\SomeSolution\src\SomeProject";
const string configFile = "app.config";

//RWM: Don't mess with these.
XNamespace defaultNs = "";
XNamespace assemblyBindingNs = "urn:schemas-microsoft-com:asm.v1";
var assemblyBindings = new XElement(assemblyBindingNs + "assemblyBinding");
var newBindings = new SortedDictionary<string, XElement>();

//RWM: Start by backing up the files.
File.Copy(Path.Combine(projectFolder, configFile), Path.Combine(projectFolder, configFile + ".bak"), true);

//RWM: Load the files.
var config = XDocument.Load(Path.Combine(projectFolder, configFile));

var oldBindingRoot = config.Root.Descendants().FirstOrDefault(c => c.Name.LocalName == "assemblyBinding");

foreach (var dependentAssembly in oldBindingRoot.Elements().ToList())
{
	var assemblyIdentity = dependentAssembly.Element(assemblyBindingNs + "assemblyIdentity");
	var bindingRedirect = dependentAssembly.Element(assemblyBindingNs + "bindingRedirect");

	if (newBindings.ContainsKey(assemblyIdentity.Attribute("name").Value))
	{
		//RWM: We've seen this assembly before. Check to see if we can update the version.
		var newBindingRedirect = newBindings[assemblyIdentity.Attribute("name").Value].Descendants(assemblyBindingNs + "bindingRedirect").First();
		var oldVersion = Version.Parse(newBindingRedirect.Attribute("newVersion").Value);
		var newVersion = Version.Parse(bindingRedirect.Attribute("newVersion").Value);

		if (newVersion > oldVersion)
		{
			newBindingRedirect.ReplaceWith(bindingRedirect);
		}
	}
	else
	{
		newBindings.Add(assemblyIdentity.Attribute("name").Value, dependentAssembly);
	}
}

//RWM: Add the SortedDictionary items to our new assemblyBindingd element.
foreach (var binding in newBindings)
{
	assemblyBindings.Add(binding.Value);
}

//RWM: Fix up the web.config by adding the new assemblyBindings and removing the old one.
oldBindingRoot.AddBeforeSelf(assemblyBindings);
oldBindingRoot.Remove();

//RWM: Save the condfig file.
config.Save(Path.Combine(projectFolder, configFile));