return Array from C# to Classic ASP with COM

Question

I am trying to return an array from c# to classic asp using com. This post helped me lot, but I still have problems:

I have the following method in c#:

public object[] returnStuff () {
    return new object[] {'1','2','3'};
}

My classic ASP:

dim responseArray1

responseArray1 = RegusSoapComponent.returnStuff()

response.write("Type of Array one is " & VarType(responseArray1))
response.write("Type of Array one is " & responseArray1(1))

My output is:

response is Type of Array one is 8204

Microsoft VBScript runtime error '800a01ca'

Variable uses an Automation type not supported in VBScript

No matter what I do, I don't seem to be able to access this variable.

@SLaks, I don't think it will either but thats the only difference I see between his and the example he posted. — Gage
– Gage, Commented Jul 4, 2011 at 18:13
@IKode "The Array function, on the other hand, always creates an array of Variants-VarType 8204 (which is 8192 plus 12)." Taken from this page brainbell.com/tutors/Visual_Basic/Arrays.htm. So you are creating an array of variants. Whats the length of the array returned? — Gage
– Gage, Commented Jul 4, 2011 at 18:22
What if you try to return array of strings? return new object[] {"1", "2", "3"}; maybe for some reason char type is causing problems.. — user447356
– user447356, Commented Jul 5, 2011 at 7:36

Community · Accepted Answer · 2017-05-23 11:59:11Z

5

VBScript likes to receive a variant containing a safearray of variants. So you need to return an object wrapping your array of objects. eg:

public object returnStuff() {
    return new object[] {'1','2','3'};
}

which should get marshalled the right way. See a previous answer for the detailed version.

edited May 23, 2017 at 11:59

CommunityBot

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answered Sep 8, 2011 at 14:15

patthoyts

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