Creating Array Type at runtime

Question

I want to get 'array type' of a type at run time. I do not need the instance of the array, just Type. I currently use the below method.

    private Type GetArrayType(Type elementType)
    {
        return Array.CreateInstance(elementType, 0).GetType();
    }

Is there any better solution without creating the instance of the array?

Note: I cannot use Type.GetType(elementType.FullName + "[]") because I create the element Type at runtime by Reflection.Emit. According to MSDN it requires dynamic assembly to be saved on disk which I do not want to do.

Ani · Accepted Answer · 2013-02-16 10:45:18Z

11

Yes, you can use Type.MakeArrayType.

Returns a Type object representing a one-dimensional array of the current type, with a lower bound of zero.

private Type GetArrayType(Type elementType)
{
    return elementType.MakeArrayType();
}

answered Feb 16, 2013 at 10:45

Ani

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2 Comments

Mehmet Ataş Over a year ago

Thanks! Seems like I need a rest... I cannot tell how I got lost in static methods of Array and Type and never thought about instance methods (:

Ani Over a year ago

I agree that some of the choices on those types of making methods instance/static are quite perplexing.

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