Enable a Site Collection feature via CSOM #C# SharePoint #SOAP #CSOM

disable_site_collection_feature.cs

        protected void removeMasterPage(object sender, EventArgs e)
        {
                var url = "<URL to site>"
            using (ClientContext clientContext = new ClientContext(url))
            {
                Site spsite = clientContext.Site;
                FeatureCollection siteFeatures = spsite.Features;
                clientContext.Load(siteFeatures);
                Guid masterPageFeatureGuid = new Guid("efcd0dac-835c-40ca-af13-c868d6cc13db");
                siteFeatures.Remove(masterPageFeatureGuid, true);
                clientContext.ExecuteQuery();
                clientContext.Dispose();
            }

        }

enable_site_collection_feature.cs

        protected void applyMasterPage(object sender, EventArgs e)
        {
                var url = "<URL to site>"
            using (ClientContext clientContext = new ClientContext(url))
            {
                Site spsite = clientContext.Site;
                FeatureCollection siteFeatures = spsite.Features;
                clientContext.Load(siteFeatures);
                Guid masterPageFeatureGuid = new Guid("efcd0dac-835c-40ca-af13-c868d6cc13db"); 
                siteFeatures.Add(masterPageFeatureGuid, false, FeatureDefinitionScope.Farm); // FARM is the required scope for a Site Collection scoped feature.  Thnx M$
                clientContext.ExecuteQuery();
                clientContext.Dispose();
            }
        }