I don't fully understand what you mean by "from shield board TX to resistor (with SDA) to D2" though?
Ignore this. Haha!
I did found the solution Last Friday and when i want to try again today, seems like its not working. Whats happening??
This should be correct right?
readonly InterruptPort irqpin = new InterruptPort(Pins.GPIO_PIN_D2, true, ResistorModes.PullUp, Port.InterruptMode.InterruptEdgeLow);
Both resistors are connectec to 5V. 1 resistor will wired up to SDA and the other resistor to SCL. And, InterruptPort is directly connected from touch shield to D2. Right?