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VB6 Variant (Array) to VB.NET Array

Posted on 2004-09-29
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Last Modified: 2008-02-01
Hi,

I have a VB6 method that returns an array of strings as a Variant.

When I try and convert this to a VB.NET string array, I receive the cast error. So, to get around this I do the following:

Dim a As Array = CTYPE(old.Method(), Array)

This does not throw an exception, so I therefore assume that the VB6 method is indeed returning an array object. However, I cannot cast this to a string array, even though each element in the Array 'a' is of type string.

Also,

Dim obj() As Object = CTYPE(old.Method(), Object()) produces the same error.

So, I cannot cast the returned Variant to an Object() / String(), but I can cast it to Array.

Furthermore, in VB.NET I would simply do,

Private Function a() As Object
  Dim str(1) As String
  Return str
End Function

Dim newStr() As String = CTYPE(a(), String())

Thanks.
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Question by:robert_83
5 Comments
 
LVL 18

Accepted Solution

by:
armoghan earned 100 total points
ID: 12179294
Instead of making String array make object array
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Assisted Solution

by:Arundel_Castle
Arundel_Castle earned 100 total points
ID: 12179558
Try it without an explict cast. Then cast the strings beneath it. My resoning is that object() has no knowledge of variant and you have to cast .Net types to object. The implict cast might trigger something else.

Dim obj() As Object

obj = old.Method()
0

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