Bennedik.Validation.Integration.WPF.ErrorProvider.AddEnterpriseValidationRule C# (CSharp) Method

        private void AddEnterpriseValidationRule(FrameworkElement element, Binding binding, DependencyProperty dp)
        {
            if (element.DataContext == null)
                return;

            foreach (ValidationRule validationRule in binding.ValidationRules)
            {
                if (validationRule is EnterpriseValidationRule)
                    return; //enterprise validation rule already exists for this binding, no need to add again
            }

            EnterpriseValidationRule rule = new EnterpriseValidationRule();
            Type propertyType = element.DataContext.GetType();
            rule.SourceTypeName = propertyType.AssemblyQualifiedName;
            rule.PropertyName = binding.Path.Path;

            if (rule.PropertyName.Length == 0)
                return; //don't validate XML bindings

            PropertyInfo propertyInfo = propertyType.GetProperty(rule.PropertyName);

            //validate property paths, e.g. Address.Street
            int dot = rule.PropertyName.IndexOf('.');
            while (dot >= 0)
            {
                string propertyName = rule.PropertyName.Substring(0, dot);
                propertyInfo = propertyType.GetProperty(propertyName);

                if (propertyInfo == null)
                    return;

                propertyType = propertyInfo.PropertyType;
                rule.SourceTypeName = propertyType.AssemblyQualifiedName;
                rule.PropertyName = rule.PropertyName.Substring(dot + 1);
                dot = rule.PropertyName.IndexOf('.');
            }

            if (propertyInfo == null)
                return;

            rule.RulesetName = RulesetName;
            rule.SpecificationSource = SpecificationSource;

            rule.Converter = binding.Converter;
            rule.ConverterCulture = binding.ConverterCulture;
            rule.ConverterParameter = binding.ConverterParameter;

            binding.ValidationRules.Add(rule);
        }