Question

How to access Phone gallery and camera in windows phone7 through code

Answer 1

there are Launchers and Choosers which allow you to call these options and they also allow you to call other things such as map,sms compose,search etc.

here is an example of one (camera)

• Creating Object

CameraCaptureTask cvt = new CameraCaptureTask();

• Registering event

cvt.Completed += new EventHandler<PhotoResult>(cv_Completed);

cvt.Show();

• Creating callback method

private void cv_Completed(object sender, PhotoResult r)
{//Your Code Here
}

also read here – MSDN- Launchers and Choosers