Map.SetView Method (GeoCoordinate, Double)
Sets the map view using the specified center and zoom level.
Assembly: Microsoft.Phone.Maps (in Microsoft.Phone.Maps.dll)
If you provide a value for the center argument that is less than two centimeters (2 cm.) from the current center, the new value is ignored and the current center is not changed. The other properties such as zoomLevel, however, are updated using the new values that were passed in, even when the value of center is ignored.