C#•2y ago

❔ Can I generalise this method?

public static IEnumerable<Enum> TransformIdToEnums(string value, params Type[] enums)
{
    string[] values = value.Split(',');
    for (int i = 0; i < enums.Length; i++)
    {
        var type = enums[i];
        yield return (Enum)Converter.GetEnumFromValue<type>(values[i]);
    }
}

public static IEnumerable<Enum> TransformIdToEnums(string value, params Type[] enums)
{
    string[] values = value.Split(',');
    for (int i = 0; i < enums.Length; i++)
    {
        var type = enums[i];
        yield return (Enum)Converter.GetEnumFromValue<type>(values[i]);
    }
}

Lets say I pass in "0,3,2" - I also want to pass in the Types of the Enusm I want to get them converted as. For example I split them into three different Enums, 0 being the category, 3 the subcategory and 2 a list item. Any way to generalise this?

4 Replies

Anton•2y ago

that enum method should have a non-generic overload which takes the type as one of the arguments if not, you can resolve the generic with reflection, but that's generally bad

TheRanger•2y ago

this worked for me

    public static IEnumerable<Enum> TransformIdToEnums(string value, params Type[] enums)
    {
        string[] values = value.Split(',');
        for (int i = 0; i < enums.Length; i++)
        {
            var type = enums[i];
            var index = int.Parse(values[i]);
            yield return (Enum)Enum.GetValues(type).GetValue(index);
        }
    }

    public static IEnumerable<Enum> TransformIdToEnums(string value, params Type[] enums)
    {
        string[] values = value.Split(',');
        for (int i = 0; i < enums.Length; i++)
        {
            var type = enums[i];
            var index = int.Parse(values[i]);
            yield return (Enum)Enum.GetValues(type).GetValue(index);
        }
    }

Dultus•2y ago

Yeah, built it somewhat like that. Thanks!

public static IEnumerable<Enum> TransformIdToEnums(string value, params Type[] enums)
{
    string[] values = value.Split(',');
    if (values.Length != enums.Length)
    {
        throw new MismatchedEnumLengthsException();
    }
    for (int i = 0; i < enums.Length; i++)
    {
        yield return (Enum)Enum.Parse(enums[i], value);
    }
}

public static IEnumerable<Enum> TransformIdToEnums(string value, params Type[] enums)
{
    string[] values = value.Split(',');
    if (values.Length != enums.Length)
    {
        throw new MismatchedEnumLengthsException();
    }
    for (int i = 0; i < enums.Length; i++)
    {
        yield return (Enum)Enum.Parse(enums[i], value);
    }
}

Accord•2y ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ Can I generalise this method?