Microsoft.Silverlight.Toolkit.Build.Tasks.DefaultStyle.Load C# (CSharp) Method

        public static DefaultStyle Load(string path)
        {
            DefaultStyle style = new DefaultStyle();
            style.DefaultStylePath = path;

            string xaml = File.ReadAllText(path);
            XElement root = XElement.Parse(xaml, LoadOptions.PreserveWhitespace);
            if (root.Name.LocalName == RootElement)
            {
                // Get the namespaces
                foreach (XAttribute attribute in root.Attributes())
                {
                    if (attribute.Name.LocalName == "xmlns")
                    {
                        style.Namespaces.Add("", attribute.Value);
                    }
                    else if (attribute.Name.NamespaceName == XNamespace.Xmlns.NamespaceName)
                    {
                        style.Namespaces.Add(attribute.Name.LocalName, attribute.Value);
                    }
                }

                // Get the styles and shared resources
                foreach (XElement element in root.Elements())
                {
                    string name = (element.Name.LocalName == "Style") ?
                        GetAttribute(element, "TargetType", "Key", "Name") :
                        GetAttribute(element, "Key", "Name");
                    if (style.Resources.ContainsKey(name))
                    {
                        throw new InvalidOperationException(string.Format(
                            CultureInfo.InvariantCulture,
                            "Resource \"{0}\" is used multiple times in {1} (possibly as a Key, Name, or TargetType)!",
                            name,
                            path));
                    }
                    style.Resources.Add(name, element);
                    style.MergeHistory[name] = path;
                }
            }

            return style;
        }

        public override bool Execute()
        {
            Log.LogMessage(MessageImportance.Low, "Merging default styles into Generic.xaml.");

            // Get the original generic.xaml
            string originalPath = Path.Combine(ProjectDirectory, Path.Combine("Themes", "Generic.xaml"));

            if (!File.Exists(originalPath))
            {
                Log.LogError("{0} does not exist!", originalPath);
                return(false);
            }
            Log.LogMessage(MessageImportance.Low, "Found original Generic.xaml at {0}.", originalPath);
            string   original = null;
            Encoding encoding = Encoding.Default;

            try
            {
                using (StreamReader reader = new StreamReader(File.Open(originalPath, FileMode.Open, FileAccess.Read)))
                {
                    original = reader.ReadToEnd();
                    encoding = reader.CurrentEncoding;
                }
            }
            catch (Exception ex)
            {
                Log.LogErrorFromException(ex);
                return(false);
            }

            // Create the merged Generic.xaml
            List <DefaultStyle> styles = new List <DefaultStyle>();

            foreach (ITaskItem item in DefaultStyles)
            {
                string path = Path.Combine(ProjectDirectory, item.ItemSpec);
                if (!File.Exists(path))
                {
                    Log.LogWarning("Ignoring missing DefaultStyle {0}.", path);
                    continue;
                }

                try
                {
                    Log.LogMessage(MessageImportance.Low, "Processing file {0}.", item.ItemSpec);
                    styles.Add(DefaultStyle.Load(path));
                }
                catch (Exception ex)
                {
                    Log.LogErrorFromException(ex);
                }
            }
            string merged = null;

            try
            {
                merged = DefaultStyle.Merge(styles).GenerateXaml();
            }
            catch (InvalidOperationException ex)
            {
                Log.LogErrorFromException(ex);
                return(false);
            }

            // Write the new generic.xaml
            if (original != merged)
            {
                Log.LogMessage(MessageImportance.Low, "Writing merged Generic.xaml.");
                if (EnableTfs && TryTfs.Checkout(originalPath))
                {
                    Log.LogMessage("Checked out Generic.xaml.");
                }
                else
                {
                    // Remove read-only flag
                    File.SetAttributes(originalPath, FileAttributes.Normal);
                }

                try
                {
                    File.WriteAllText(originalPath, merged, encoding);
                    Log.LogMessage("Successfully merged Generic.xaml.");
                }
                catch (Exception ex)
                {
                    Log.LogErrorFromException(ex);
                    return(false);
                }
            }
            else
            {
                Log.LogMessage("Existing Generic.xaml was up to date.");
            }

            return(true);
        }