Question

Pass Variables to vb6 dll from vb.net app

Asked by: Paul-Brooks

I have a vb.net app that parses text files and populates variables to write into an accounting system and  I use a VB6 dll to handle the RDO connection to the accounting system.

How do I pass the 50 or so variables from the vb.net app to the dll?

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Asked On
2008-05-29 at 01:36:33ID23440697
Topics

.NET

,

Visual Studio

Participating Experts
2
Points
500
Comments
5

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Answers

 

by: emoreauPosted on 2008-05-29 at 04:52:50ID: 21668086

You have a couple of solutions:
-In your .Net app, create a XML document that contains all your value and pass it to your VB6 dll
-In your VB6 app, create a class exposing a constructor that accepts all the variables
-In your VB6 app, create a class exposing all properties and set them one by one
-In your .Net app, concatenate all the values into a string with a special delimiter and use the Split method of VB6 to create an array from it

 

by: hariprasadrjPosted on 2008-05-29 at 04:55:18ID: 21668100

Hi,

Do try the attached code snippet, in C#, convert if required.

Thanks
Hari

object obj = null;
object result;
Type type = null;
 
type = Type.GetTypeFromProgID("DLLProgID");
obj = Activator.CreateInstance(type);
object[] params = { "1", "2", "3" .... };
result = type.InvokeMember("MethodName", System.Reflection.BindingFlags.InvokeMethod, null, obj, params));
                                              
1:
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3:
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Select allOpen in new window

 

by: Paul-BrooksPosted on 2008-05-29 at 04:59:01ID: 21668122

Decided to try creating an array in .net app and passing to dll. If this doesn't work I'll come back to the suggestions above

 

by: emoreauPosted on 2008-05-29 at 05:03:53ID: 21668166

 

by: Paul-BrooksPosted on 2008-06-05 at 02:34:38ID: 21717512

The software parses the original string and rebuilds it  to pass to the dll where the 'split' method is used to create an array. The array elements populate an RDO recordset which updates the accounting system.

Split method would also work in a vb.net dll for other accounting systems which is why I preferred it - I also wanted to avoid creating other files.



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