本文整理汇总了C#中LocationCollection.FirstOrDefault方法的典型用法代码示例。如果您正苦于以下问题：C# LocationCollection.FirstOrDefault方法的具体用法？C# LocationCollection.FirstOrDefault怎么用？C# LocationCollection.FirstOrDefault使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类LocationCollection的用法示例。
在下文中一共展示了LocationCollection.FirstOrDefault方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: DrawRoute
/// <summary>
///
/// </summary>
/// <param name="points"></param>
private void DrawRoute(List<Location> points)
{
MapShapeLayer shapeLayer = new MapShapeLayer();
MapPolyline polyline = new MapPolyline();
LocationCollection lc = new LocationCollection();
foreach (Location p in points)
{
lc.Add(p);
}
polyline.Locations = lc;
polyline.Color = Color.FromArgb(255, 102, 0, 0);
polyline.Width = 5;
shapeLayer.Shapes.Add(polyline);
Map.ShapeLayers.Clear();
Map.ShapeLayers.Add(shapeLayer);
Location midpoint = new Location(lc.FirstOrDefault().Latitude + ((lc.LastOrDefault().Latitude - lc.FirstOrDefault().Latitude) / 2.0),
lc.FirstOrDefault().Longitude + ((lc.LastOrDefault().Longitude - lc.FirstOrDefault().Longitude) / 2.0));
Map.SetView(midpoint, 15.5F);
}示例2: Pushpin_Tap
private void Pushpin_Tap(object sender, System.Windows.Input.GestureEventArgs e)
{
// Def Polyline:
this.Polyline = new MapPolyline();
this.Polyline.Stroke = new SolidColorBrush(Colors.Red); // stroke;
this.Polyline.StrokeThickness = 5; // strokeThinkness;
this.Polyline.Opacity = 0.7; // opacity;
var pushpin = sender as Pushpin;
var locationsList = new LocationCollection();
List<GeoCoordinate> thisWayCoordinates = new List<GeoCoordinate>();
GeoCoordinate routeLoc = pushpin.Location;
if (routeLoc == LocationManager.GetCurrentLocation())
{
}
else
{
RouteDesign routeDesign = this.ViewModel.NearbyRoutesCollection.Where(c => (c.Route.AllCoordinate[0] == pushpin.Location)).FirstOrDefault();
if (routeDesign.Draw == false)
{
thisWayCoordinates = routeDesign.Route.AllCoordinate;
foreach (GeoCoordinate coor in thisWayCoordinates)
{
locationsList.Add(coor);
}
Polyline.Locations = locationsList;
RouteBingMap.Children.Add(Polyline);
RouteBingMap.SetView(locationsList.FirstOrDefault(), 15);
// informations:
double wayDistance = 0;
for (int i = 0; i <= thisWayCoordinates.Count - 2; i++)
{
wayDistance += (thisWayCoordinates[i]).GetDistanceTo(thisWayCoordinates[i + 1]);
}
//ToolTipService.SetToolTip(pushpin, "The route length:" + wayDistance);
// RouteBingMap.Children.Add(pushpin);
ContextMenu contextMenu = ContextMenuService.GetContextMenu(pushpin);
// contextMenu.DataContext = "llll";
contextMenu.DataContext = this.ViewModel.NearbyRoutesCollectionAndMe.Where(c => (c.Route.AllCoordinate[0] == pushpin.Location)).FirstOrDefault();
//RouteDesign r = (RouteDesign)(contextMenu.DataContext = this.ViewModel.NearbyRoutesCollectionAndMe.Where(c => (c.Route.AllCoordinate[0] == pushpin.Location)).FirstOrDefault());
if (contextMenu.Parent == null)
{
if (Open == "true")
{
Open = "false";
RouteView.Visibility = Visibility.Collapsed;
}
contextMenu.IsOpen = true;
}
// ToolTip t = new ToolTip();
// t = (ToolTip)ToolTipService.GetToolTip(pushpin);
//// t.DataContext = this.ViewModel.NearbyRoutesCollectionAndMe.Where(c => (c.Route.AllCoordinate[0] == pushpin.Location)).FirstOrDefault();
// t.IsOpen = true;
// ToolTip t;
// t = new ToolTip();
//// t.Content = "The route length:" + wayDistance;
// t.FontSize = 20;
// t.DataContext="ttttttttttttttttttttt"+(this.ViewModel.NearbyRoutesCollectionAndMe.Where(c => (c.Route.AllCoordinate[0] == pushpin.Location)).FirstOrDefault()).Route.WayDistance.ToString();
// t.FontSize = 20;
// t.IsOpen = true;
// t.Visibility = Visibility.Visible;
// MessageBox.Show("The route length:" + wayDistance);
}
}
}