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缩放到图层，缩放到要素
public static void ZoomToLayer(IActiveView pActiveView, ILayer pLayer,double pading) { pActiveView.Extent = ((IGeoDataset)pLayer).Extent; pActiveView.Extent.Width += pading; pActiveView.Extent.Height += pading;修改比例尺
//修改比例尺 [DllImport("User32.dll")] public static extern int GetDesktopWindow(); public static void ChangeMapScale(double scale) { //mapDocument.Open(@"C:\Temp\foo.mxd", null);