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Passing Data from ASP to VC++ component

Posted on 2006-03-29
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Last Modified: 2012-05-05

Hi,

Facing some proble in passing data to COM component.

The user enters some strings through WEB and these to be passed to a COM DLL. Please note that number of rows and cols are not limited.

Sample data:

"StringA1","StringA2","StringA3"
"StringB1"
"StringC1","StringC2"

Current approach was merge all data into a single string using field seperators and in COM it is accessed as a BSTR. So the above data is passed like

"StringA1#StringA2#StringA3,StringB1,StringC1#StringC2"

Here the '#' is field seprator for columns and ',' for rows.

The new problem is that the user input may contain anything including special characters. So I cannot use field seprators like '#'.

Please let me know your suggestions.

Thanks in advance.

-Shinto




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Question by:mnopix
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3 Comments
 
LVL 12

Expert Comment

by:OnegaZhang
ID: 16329383
Add a method Test to your interface
STDMETHOD(Test)(VARIANT object);
in Test(), handle object.vt = VT_BYREF | VT_VARIANT


Call the method in the following way:
dim vbsarray(2)
vbsarray(1) = "aa"
vbsarray(2) = "bb"

IXXX.Test vbsarray  
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Author Comment

by:mnopix
ID: 16332822
Need to handle multi- dimensional arrays!

dim vbsarray(3,3)
vbsarray(0,0) = "StringA1"
vbsarray(0,1) = "StringA2"
vbsarray(0,2) = "StringA3"
vbsarray(1,0) = "StringB1"
vbsarray(2,0) = "StringC1"
vbsarray(2,1) = "StringC2"

How these values could be retrieved inside a COM object?
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Accepted Solution

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OnegaZhang earned 375 total points
ID: 16334449
find a post in http://spaces.msn.com/onegazhang/
Title: pass 2-dimension string array from vbscript to COM

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