My onOptionsItemSelected() is not sending me to the activity I set it to.

public class Activity1 : Activity
{

protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);

// Set our view from the "main" layout resource
SetContentView(Resource.Layout.Main);
}

public override bool OnCreateOptionsMenu(IMenu menu)
{
var inflater = MenuInflater;
inflater.Inflate(Resource.Menu.option_menu, menu);
return base.OnPrepareOptionsMenu(menu);
}


public override bool OnOptionsItemSelected(IMenuItem item)
{
var intent = new Intent(this, typeof(APR_Edit));

switch (item.ItemId)
{
case Resource.Id.item1: Toast.MakeText(this, " WORKING", ToastLength.Long).Show();


return true;



case Resource.Id.item2: Toast.MakeText(this, "DISCOVER WORKING", ToastLength.Long).Show();
StartActivity(typeof(Activity2));// Want to start this activity on item2 selection


return true;

case Resource.Id.Advance: var intent = new Intent(this, typeof(Activity3));
try
{
StartActivity(intent);
}
catch (NullReferenceException ex)
{
string sMessage = ex.Message;
Toast.MakeText(this, sMessage, ToastLength.Long).Show();

}
return true;

case Resource.Id.Close: Android.OS.Process.KillProcess(Android.OS.Process.MyPid());
return true;
}
return base.OnOptionsItemSelected(item);
}

i've tried two different method to start another activity
can you help me on this