C# Bings地图中的路线

我使用了文档并遵循了所有步骤，但是当我尝试实现代码时，我什么都看不到

BingMapsDirectionsTask bingMapsDirectionsTask = new BingMapsDirectionsTask();

// You can specify a label and a geocoordinate for the end point.
GeoCoordinate spaceNeedleLocation = new GeoCoordinate(-33.3935,-070.6215);
LabeledMapLocation spaceNeedleLML = new LabeledMapLocation("camino las rosas,santiago,chile", spaceNeedleLocation);

// If you set the geocoordinate parameter to null, the label parameter is used as a search term.
// LabeledMapLocation spaceNeedleLML = new LabeledMapLocation("Space Needle", null);

bingMapsDirectionsTask.End = spaceNeedleLML;

// If bingMapsDirectionsTask.Start is not set, the user's current location is used as the start point.

bingMapsDirectionsTask.Show();

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你的代码看起来不错。你说的“我什么都看不见”到底是什么意思？如果有帮助的话，看看这个演示：谢谢，我想问题出在windows phone模拟器上。