Umbraco Bypass ascii encoding if all fails

CustomApplicationEventHandler.cs

using System.Globalization;
using Umbraco.Core;
using Umbraco.Core.Configuration;
using Umbraco.Core.Configuration.UmbracoSettings;
using Umbraco.Core.Strings;

namespace Custom
{
    public class CustomApplicationEventHandler : ApplicationEventHandler
    {
        protected override void ApplicationStarting(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext)
        {
            var shortStringHelper = new CustomShortStringHelper(UmbracoConfig.For.UmbracoSettings()).WithDefaultConfig();
            ShortStringHelperResolver.Current.SetHelper(shortStringHelper);

            base.ApplicationStarting(umbracoApplication, applicationContext);
        }

    }
}

CustomShortStringHelper.cs

using System.Globalization;
using Umbraco.Core;
using Umbraco.Core.Configuration;
using Umbraco.Core.Configuration.UmbracoSettings;
using Umbraco.Core.Strings;

namespace Custom
{
    public class CustomShortStringHelper : DefaultShortStringHelper
    {
        public CustomShortStringHelper(IUmbracoSettingsSection umbracoSettings) : base(umbracoSettings) { }

        public override string CleanStringForUrlSegment(string text)
        {
            var converted = this.CleanString(text, CleanStringType.UrlSegment);
            if (string.IsNullOrWhiteSpace(converted))
            {
                return text;
            }
            return converted;
        }

        public override string CleanStringForUrlSegment(string text, CultureInfo culture)
        {
            var converted = this.CleanString(text, CleanStringType.UrlSegment, culture);
            if (string.IsNullOrWhiteSpace(converted))
            {
                return text;
            }
            return converted;
        }
    }
}

Used if i.e. you need to have toAscii set to true, while some nodes might not be able to be translated into Ascii, like chinese.

This will simply not do any conversions on the strings, if they contain non ascii letters, i.e. the CleanString method returned empty, which it would if toAscii is on, and the node is in chinese.