Measurements.UpdatePoint(MapRuler, CoordPoint, Int32) Method

Changes the coordinates of the point with the specified index.

Namespace: DevExpress.Xpf.Map

Assembly: DevExpress.Xpf.Map.v21.2.dll

NuGet Package: DevExpress.Wpf.Map

Declaration

C#

public void UpdatePoint(
    MapRuler ruler,
    CoordPoint point,
    int index
)

VB.NET

Public Sub UpdatePoint(
    ruler As MapRuler,
    point As CoordPoint,
    index As Integer
)

Parameters

Name	Type	Description
ruler	MapRuler	The ruler in which to update a point.
point	CoordPoint	Coordinates of the new ruler point.
index	Int32	The index of the ruler point.

Remarks

The example below creates a ruler to measure the distance between Paris, Milan and Vienna. After calculating this distance, the code updates the ruler as follows:

• a point is added at Berlin’s coordinates;
• the first point is moved from Paris to Dusseldorf;
• the point at Milan’s coordinates is removed from the ruler.

C#

MapRuler ruler = mapControl1.Measurements.CreateRuler(RulerType.Distance,
                                                        new List<CoordPoint>() {
                                                            new GeoPoint(48.864716, 2.349014), // Paris
                                                            new GeoPoint(45.46427, 9.18951),   // Milan
                                                            new GeoPoint(48.20849, 16.37208)   // Vienna
                                                        });
//The code below updates the ruler.                                                        
mapControl1.Measurements.InsertPoint(ruler, new GeoPoint(52.520008, 13.404954), 2); // Berlin
mapControl1.Measurements.UpdatePoint(ruler, new GeoPoint(51.2217200, 6.7761600), 0); // Dusseldorf
mapControl1.Measurements.RemovePoint(ruler, 1); // Milan

VB.NET

Dim ruler As MapRuler = mapControl1.Measurements.CreateRuler(RulerType.Distance, 
                                                             New List(Of CoordPoint)() From {
                                                                New GeoPoint(48.864716, 2.349014),' Paris
                                                                New GeoPoint(45.46427, 9.18951),  ' Milan
                                                                New GeoPoint(48.20849, 16.37208)  ' Vienna })

'The code below updates the ruler.                                                        
mapControl1.Measurements.InsertPoint(ruler, New GeoPoint(52.520008, 13.404954), 2) ' Berlin
mapControl1.Measurements.UpdatePoint(ruler, New GeoPoint(51.2217200, 6.7761600), 0) ' Dusseldorf
mapControl1.Measurements.RemovePoint(ruler, 1) ' Milan

Before Update	After Update