xamarin forms windows uwp solution connect with WCFService error denied access [duplicate]

Этот код может быть полезен

L ={x, y, z}
T= ((0,"c"),(1,"d"),(2,"e"),(3,"f"),)
List2=[]
for t in T :
if t[0] in L :
    List2.append(t[1])
    break;