UIAutomation.ExtensionMethodsCollection.GetElementsByWildcard C# (CSharp) Method

        public static IEnumerable GetElementsByWildcard(this IUiEltCollection collection, string name, string automationId, string className, string txtValue, bool caseSensitive)
        {
            WildcardOptions options;
            if (caseSensitive) {
                options =
                    WildcardOptions.Compiled;
            } else {
                options =
                    WildcardOptions.IgnoreCase |
                    WildcardOptions.Compiled;
            }
            
            List<IUiElement> list = collection.Cast<IUiElement>().ToList();
            
            var wildcardName = 
                new WildcardPattern((string.IsNullOrEmpty(name) ? "*" : name), options);
            var wildcardAutomationId = 
                new WildcardPattern((string.IsNullOrEmpty(automationId) ? "*" : automationId), options);
            var wildcardClassName = 
                new WildcardPattern((string.IsNullOrEmpty(className) ? "*" : className), options);
            var wildcardValue = 
                new WildcardPattern((string.IsNullOrEmpty(txtValue) ? "*" : txtValue), options);
            
            var queryByBigFour = from collectionItem
                in list
                // 20140312
//                where wildcardName.IsMatch(collectionItem.Current.Name) &&
//                      wildcardAutomationId.IsMatch(collectionItem.Current.AutomationId) &&
//                      wildcardClassName.IsMatch(collectionItem.Current.ClassName) &&
                    where wildcardName.IsMatch(collectionItem.GetCurrent().Name) &&
                wildcardAutomationId.IsMatch(collectionItem.GetCurrent().AutomationId) &&
                wildcardClassName.IsMatch(collectionItem.GetCurrent().ClassName) &&
                      // 20131209
                      // (collectionItem.GetSupportedPatterns().Contains(classic.ValuePattern.Pattern) ?
                      (collectionItem.GetSupportedPatterns().AsQueryable<IBasePattern>().Any<IBasePattern>(p => p is IValuePattern) ?
                      // 20131208
                      // wildcardValue.IsMatch((collectionItem.GetCurrentPattern(classic.ValuePattern.Pattern) as IValuePattern).Current.Value) :
                      // wildcardValue.IsMatch((collectionItem.GetCurrentPattern<IValuePattern, ValuePattern>(classic.ValuePattern.Pattern) as IValuePattern).Current.Value) :
                      wildcardValue.IsMatch(collectionItem.GetCurrentPattern<IValuePattern>(classic.ValuePattern.Pattern).Current.Value) :
                      // check whether the -Value parameter has or hasn't value
                      ("*" == txtValue ? true : false))
                select collectionItem;
            
            // disposal
            list = null;
            
            return queryByBigFour;
        }