Ext.Net.StoreDataBound.CreateAutoFieldProperties C# (CSharp) Method

        AutoGeneratedFieldProperties[] CreateAutoFieldProperties(IEnumerable source, IEnumerator en)
        {
            Data = null;
            JsonData = "";

            if (this.SerializationMode == SerializationMode.Complex)
            {
                Data = source;
                return null;
            }
            
            if (source == null) return null;

            if (source is string && source.ToString().StartsWith("http"))
            {
                this.JsonData = "'{0}'".FormatWith(source);
                this.IsUrl = true;
                return null;
            }

            ITypedList typed = source as ITypedList;
            PropertyDescriptorCollection props = typed == null ? null : typed.GetItemProperties(new PropertyDescriptor[0]);

            Type prop_type;

            ArrayList retVal = new ArrayList();


            if (props == null)
            {
                object fitem = null;
                prop_type = null;
                PropertyInfo prop_item = source.GetType().GetProperty("Item",
                                                  BindingFlags.Instance | BindingFlags.Static |
                                                  BindingFlags.Public, null, null,
                                                  new Type[] { typeof(int) }, null);

                if (prop_item != null)
                {
                    prop_type = prop_item.PropertyType;

                    if (prop_type.IsInterface)
                    {
                        prop_type = null;
                    }
                }

                if (prop_type == null || prop_type == typeof(object))
                {
                    if (en.MoveNext())
                    {
                        fitem = en.Current;
                        this.firstRecord = fitem;
                    }

                    if (fitem != null)
                    {
                        prop_type = fitem.GetType();
                    }
                }

                if (fitem != null && fitem is ICustomTypeDescriptor)
                {
                    props = TypeDescriptor.GetProperties(fitem);
                }
                else if (prop_type != null)
                {
                    if (IsBindableType(prop_type))
                    {
                        AutoGeneratedFieldProperties field = new AutoGeneratedFieldProperties();
                        ((IStateManager)field).TrackViewState();
                        field.Name = "Item";
                        field.DataField = BoundField.ThisExpression;
                        field.Type = prop_type;
                        retVal.Add(field);
                    }
                    else
                    {
                        if (prop_type.IsArray)
                        {
                            Data = source;
                            return null;
                        }
                        else
                        {
                            props = TypeDescriptor.GetProperties(prop_type); 
                        }
                    }
                }
            }

            if (props != null && props.Count > 0)
            {
                foreach (PropertyDescriptor current in props)
                {
                    if (this.IsBindableType(current.PropertyType) || this.IsComplexField(current.Name))
                    {
                        AutoGeneratedFieldProperties field = new AutoGeneratedFieldProperties();
                        field.Name = current.Name;
                        field.DataField = current.Name;
                        retVal.Add(field);
                    }
                }
            }

            if (retVal.Count > 0)
            {
                return (AutoGeneratedFieldProperties[])retVal.ToArray(typeof(AutoGeneratedFieldProperties));
            }
            
            return null;
        }