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Passing string data to vb6.0 desktop application

Tuesday, October 09, 2007 6:20 AMSunilKumar111

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Hi everybody,

I need to pass some data(string) from my C# desktop application to vb6.0 desktop application. what is the best way to do that.

Its very urgent. Please help

Thank you very much
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Answers

Wednesday, October 10, 2007 8:41 AMFeng ChenMSFT, Moderator

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Hi SunilKumar111,

I suggest that you can use WM_COPYDATA to send data between the different processes. To achieve this, you can use SendMessage function in C# through P/Invoke. And there are several references on this issue:

·         Inter process communication using registered messages from Visual Basic

·         Use WM_COPYDATA to send data to/from C++ and C# Windows processes

·         Inter-Process Communication using WM_COPYDATA

Hope this helps!

Thanks!
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Wednesday, October 10, 2007 7:13 AMFeng ChenMSFT, Moderator

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Hi SunilKumar111,

Could you please cover your VB6.0 application in more details? Is it a control DLL and you want to use it in your C# application or it is a single application?

Thanks!
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Wednesday, October 10, 2007 8:21 AMSunilKumar111

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Hi, Feng Chen !

Both C# and VB6.0 applications are standalone windows applicatios(no DLL). Both will be run separately on the same machine. I need to pass some string data to vb6.0 application.
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Thursday, October 11, 2007 5:54 AMSunilKumar111

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Thank you very much Sir. It was of great help.
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