Water won't stop running into dishwaher

Question

I have a Frigidaire FDB510LCB0 dishwasher and I am having to turn the water valve off after each use because the water won't stop running into the dishwasher.I seen where you said it could be the inlet valve where is the inlet valve located on the dishwasher and is it hard to replace? I have looked all over the internet for diagrams to find where the inlet valve is, but I haven't had much luck.
Thanks for your time and consideration.
Tonia