how to call unmanaged c++ dll in wcf library?

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I want to call c++ method from wcf service for get ip camera status.

Bellow code run successfully using wpf application but i want to run this method in wcf library then consume in wpf application.

when call method from wcf library then throw exeption.

[DllImport(@"C:\dhnetsdk.dll")]
private static extern bool CLIENT_Init(fDisConnect cbDisConnect, IntPtr dwUser);

Please give solution on urgent basis.

Thanks & Regards

Chandrashekhar Sharma

Posted 18-Dec-15 22:55pm

chsharma1990

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Comments

Afzaal Ahmad Zeeshan 19-Dec-15 5:02am

What exception is thrown?

Sergey Alexandrovich Kryukov 20-Dec-15 1:08am

It doesn't matter where you use P/Invoke. But using hard-coded file path like "C:\dhnetsdk.dll" anywhere is totally wrong, and "C:" is not a legitimate location. There are no cases when hard-coded file path could be useful in any production-grade application.
—SA

chsharma1990 22-Dec-15 23:41pm

I have already used this method after placing dhnetsdk.dll in bin directory of apllication but again found error.
[DllImport("dhnetsdk.dll")]
private static extern bool CLIENT_Init(fDisConnect cbDisConnect, IntPtr dwUser);

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