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c#dynamicconstructorimplicit-conversion
KingKerosin
KingKerosin

Reputation: 3841

C# -Implicit constructor from dynamic object

Given the following class:

public class DataPair{
    public string Key { get; set; }
    public object Value { get; set; }

    public DataPair(string key, object value)
    {
        Key = key;
        Value = value;
    }
}

Is there any chance to implement something like

public static implicit operator DataPair(dynamic value)
{
    return new DataPair(value.Key, value.Value);
}

So I can create a new instance this way

DataPair myInstance = {"key", "value"};

Upvotes: 12

Views: 6243

Answers (2)

alex2000
alex2000

Reputation: 81

Finally, with C# 7, you may use ValueTuples like

public static implicit operator DataPair((string key, object value) value)
{
    return new DataPair(value.key, value.value);
}

and use it like

DataPair dp = ("key", 234);

Upvotes: 8

Rob
Rob

Reputation: 27367

This is probably the closest you're going to get:

public static implicit operator DataPair(string[] values)
{
    return new DataPair(values[0], values[1]);
}

And use it like:

DataPair myInstance = new []{"gr", "value"};

That's the closest you're going to get, as the = {"gr", "value"}; syntax is reserved for arrays, which you cannot subclass.

Upvotes: 6

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