Two Sides about twaindotnet HOT 4 OPEN

I made some testes and saw that the Scan UI used by TwainDotNet is the same used by LibreOffice, and LibreOffice cant scan two sides too, so it must be something with the Twain package instead of TwainDotNet.

But the Windows Scan and Fax can do with the both sides, but, in its option origin has two option

1. Feed ( one side)
2. Feed (Two sides)

On MFPs to scan two sides usually is used another origin... I'm searching yet, any help will welcome ^^

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On MX711 duplex option doesnt work too.

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Using WIA not work duplex on Avision AV1860, but using TWAIN works perfect! amaze proyect, thanks!!!!!

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Can I pass/transfer the scanned images to 2 picture boxes when it is duplex and ADF?

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