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  • Peter Aderhold 30 posts 202 karma points
    Jan 05, 2020 @ 13:17
    Peter Aderhold
    0

    How to add PreValues programmatically into DropdownList in v8?

    Hi folks,

    I found some examples for v7 and earlier, but not for v8. Anyone knows how to do this?

    I have so far:

    public static void SetDataTypePreValues(int id, List<string> values)
    {
        var dataTypeService = Current.Services.DataTypeService;
        var dataType = dataTypeService.GetDataType(id); // this is the dropdownlist
        // and now???

    }

    Thank you for your help.

    Peter

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  • Peter Aderhold 30 posts 202 karma points
    Jan 05, 2020 @ 14:22
    Peter Aderhold
    100

    What I did for now is:

    var valueList = (ValueListConfiguration)dataType.Configuration;
        var lastId = valueList.Items.LastOrDefault()?.Id;
        var newValueList = new List<ValueListConfiguration.ValueListItem>();
        var idCounter = lastId ?? 0;
        foreach (var val in values)
        {
            newValueList.Add(new ValueListConfiguration.ValueListItem
            {
                Id = idCounter,
                Value = val
            });

            idCounter++;
        }
        ((ValueListConfiguration)dataType.Configuration).Items.AddRange(newValueList);
        dataTypeService.Save(dataType);

    I don't know if this is the best way to do it, but at least it works.

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