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Custom PropertyData, with SelectionFactory issues


I have created a custom propertydata to hold a set of variables to be picked within a dropdown on a block.

This in it self was more difficult than i beileive it has a right to be - which means i probably did it wrong.
However, my issue is now that while it works, the dropdown can not tell what is already selected.

When i publish the block, the dropdown goes blank, but the model has the correct information.

I have tried to make sure to override Equals(), as i expected that would be used to find the proper selection, this is however not hit.

Does anyone know what is used within episerver to find the correct selection of a dropdown on a model, or knows how to manually set it at load?

Apr 13, 2021 7:05


Can you please provide the code snippet here.

One more thing please try to cast the values of your SelectionFactory into a string if it is of another type.

var selectableCategories = GetCategoriesWithChildren(categories,str, strings, list)
                .Select((x, i) => new SelectItem
                    Text = strings[i],
                    Value = x.ID.ToString()
Apr 13, 2021 7:32

I have this in the selection factory;

public IEnumerable<ISelectItem> GetSelections(ExtendedMetadata metadata)
            var selectList = new List<ISelectItem>();
            foreach (var colorTheme in colorThemes)
                selectList.Add(new SelectItem() { Text = colorTheme.Name, Value = colorTheme });
            return selectList;

It is used on the model as;

            Name = "Color Theme",
            Description = "Select the color theme to be used on the banner",
            GroupName = TabNames.Content,
            Order = 4)]
        [SelectOne(SelectionFactoryType = typeof(ColorThemeSelectionFactory))]
        public virtual ColorTheme ColorTheme { get; set; }

With the ColorTheme class, that holds a few different fields, and the backing type of PropertyColorTheme that extends PropertyData
It saves internally using the propertyDataType.String, using custom parser that just takes the values of the ColorTheme as a comma seperated string

Apr 13, 2021 7:37

Include value string?

Apr 16, 2021 10:49
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