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2-1 Query function

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PeterZhong 2024-10-28 11:12:47 +08:00
parent a7b979347c
commit 0ecca052cf
3 changed files with 172 additions and 11 deletions
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5
GisDevelop_Exp/MainWindow.xaml
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@ -24,6 +24,11 @@
<MenuItem x:Name="Menu_Full_Extent" Header="全图" Click="Menu_Full_Extent_OnClick"></MenuItem>
<MenuItem x:Name="Menu_Wrap_Around" Header="开启漫游" Click="Menu_Wrap_Around_OnClick"></MenuItem>
</MenuItem>
<MenuItem x:Name="Menu_Identify" Header="查询">
<MenuItem x:Name="Menu_Simple_Identify" Header="简单查询" Click="Menu_Simple_Identify_OnClick"></MenuItem>
<MenuItem x:Name="Menu_Click_Indentify" Header="点击查询" Click="Menu_Click_Indentify_OnClick"></MenuItem>
<MenuItem x:Name="Menu_Identify_Indentify" Header="Indentify查询" Click="Menu_Identify_Indentify_OnClick"></MenuItem>
</MenuItem>
</Menu>
<esri:MapView x:Name="MainMapView" Map="{Binding Map, Source={StaticResource MapViewModel}}" Margin="0,19,0,0" ViewpointChanged="MainMapView_OnViewpointChanged" GeoViewTapped="MainMapView_OnGeoViewTapped"/>
<Border BorderBrush="#FF8B1D76" BorderThickness="2,2,2,2" HorizontalAlignment="Right" Height="180" Width="202" VerticalAlignment="Top" IsEnabled="False">

168
GisDevelop_Exp/MainWindow.xaml.cs
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@ -24,6 +24,14 @@ using Color = System.Drawing.Color;
using Geometry = Esri.ArcGISRuntime.Geometry.Geometry;
using Polygon = Esri.ArcGISRuntime.Geometry.Polygon;
enum CURRENTOPERATION
{
NullOpe = -1,
SelectQuery = 0,
IdentifyQuery,
PanMap,
}
namespace GisDevelop_Exp
{
/// <summary>
@ -35,6 +43,7 @@ namespace GisDevelop_Exp
private string _statesUrl =
"https://services.arcgis.com/jIL9msH9OI208GCb/arcgis/rest/services/USA_Daytime_Population_2016/FeatureServer/0";
private ServiceFeatureTable _featureTable;
private readonly Dictionary<string, Basemap> _basemapOptions = new Dictionary<string, Basemap>()
@ -51,9 +60,13 @@ namespace GisDevelop_Exp
{ "Navigation (Vector)", new Basemap(BasemapStyle.ArcGISNavigation) },
{ "OpenStreetMap (Raster)", new Basemap(BasemapStyle.OSMNavigation) }
};
private CURRENTOPERATION m_CurOper;
public MainWindow()
{
InitializeComponent();
m_CurOper = CURRENTOPERATION.NullOpe;
Initialize();
EagleMapView.Map = new Map(BasemapStyle.ArcGISImageryStandard);
}
@ -70,7 +83,8 @@ namespace GisDevelop_Exp
private void InitializeAuthenticationManagerWithToken(string token)
{
AuthenticationManager.Current.AddCredential(new OAuthTokenCredential(new Uri("https://services3.arcgis.com/Po7vxnPH4Do7ht5I/arcgis/rest/services/test/MapServer"),token));
AuthenticationManager.Current.AddCredential(new OAuthTokenCredential(
new Uri("https://services3.arcgis.com/Po7vxnPH4Do7ht5I/arcgis/rest/services/test/MapServer"), token));
}
private void Menu_OpenShp_Click(object sender, RoutedEventArgs e)
@ -108,6 +122,7 @@ namespace GisDevelop_Exp
{
_slocalGeodatabasePath = fileDialog.FileName;
}
if (System.IO.File.Exists(_slocalGeodatabasePath))
{
_localGeodatabase = await Geodatabase.OpenAsync(_slocalGeodatabasePath);
@ -122,6 +137,7 @@ namespace GisDevelop_Exp
geodatabaseMap.OperationalLayers.Add(layer);
_featureLayer = layer;
}
Viewpoint geodatabaseViewPoint = new Viewpoint(_featureLayer.FullExtent);
geodatabaseMap.InitialViewpoint = geodatabaseViewPoint;
MainMapView.Map = geodatabaseMap;
@ -139,7 +155,8 @@ namespace GisDevelop_Exp
Esri.ArcGISRuntime.Geometry.Polygon vExtent = MainMapView.VisibleArea;
Envelope eagleViewEnvelop = vExtent.Extent;
Color lineColor = Color.FromArgb(255, 255, 0, 0);
SimpleLineSymbol lineSymbol = new Esri.ArcGISRuntime.Symbology.SimpleLineSymbol(SimpleLineSymbolStyle.Dash, lineColor,2.0);
SimpleLineSymbol lineSymbol =
new Esri.ArcGISRuntime.Symbology.SimpleLineSymbol(SimpleLineSymbolStyle.Dash, lineColor, 2.0);
Color fillColor = Color.FromArgb(0, 0, 0, 0);
SimpleFillSymbol fillSymbol = new SimpleFillSymbol(SimpleFillSymbolStyle.Solid, fillColor, lineSymbol);
var graphicOverlay = new Esri.ArcGISRuntime.UI.GraphicsOverlay();
@ -174,7 +191,6 @@ namespace GisDevelop_Exp
Console.WriteLine(exception);
throw;
}
}
private void Menu_Zoom_out_OnClick(object sender, RoutedEventArgs e)
@ -214,10 +230,12 @@ namespace GisDevelop_Exp
if (_featureLayer.FeatureTable.GeometryType == GeometryType.Polygon)
{
pRenderer.Symbol = pFillSymbol;
}else if (_featureLayer.FeatureTable.GeometryType == GeometryType.Point)
}
else if (_featureLayer.FeatureTable.GeometryType == GeometryType.Point)
{
pRenderer.Symbol = pMarkerSymbol;
}else if (_featureLayer.FeatureTable.GeometryType == GeometryType.Polyline)
}
else if (_featureLayer.FeatureTable.GeometryType == GeometryType.Polyline)
{
pRenderer.Symbol = pLineSymbol;
}
@ -225,6 +243,7 @@ namespace GisDevelop_Exp
{
pRenderer.Symbol = pFillSymbol;
}
_featureLayer.Renderer = pRenderer;
pMap.OperationalLayers.Add(_featureLayer);
MainMapView.Map = pMap;
@ -287,9 +306,146 @@ namespace GisDevelop_Exp
MapPoint mapLocation = e.Location;
Geometry myGeometry = mapLocation.Project(SpatialReferences.Wgs84);
MapPoint projectedLocation = (MapPoint)myGeometry;
string mapLocationDescription = string.Format("纬度: {0:F3} 经度:{1:F3}", projectedLocation.Y, projectedLocation.X);
string mapLocationDescription =
string.Format("纬度: {0:F3} 经度:{1:F3}", projectedLocation.Y, projectedLocation.X);
CalloutDefinition myCalloutDefinition = new CalloutDefinition("当前位置：", mapLocationDescription);
MainMapView.ShowCalloutAt(mapLocation, myCalloutDefinition);
if (m_CurOper == CURRENTOPERATION.SelectQuery)
{
if (MainMapView.Map.OperationalLayers.Count > 0)
{
FeatureLayer _featureLayer = MainMapView.Map.OperationalLayers.First() as FeatureLayer;
if (_featureLayer != null)
{
FunClickQuery(e.Location, _featureLayer);
}
}
}else if (m_CurOper == CURRENTOPERATION.IdentifyQuery)
{
if (MainMapView.Map.OperationalLayers.Count > 0)
{
FeatureLayer _featureLayer = MainMapView.Map.OperationalLayers.First() as FeatureLayer;
if (_featureLayer != null)
{
FunIndentifyQuery(e.Position, _featureLayer);
}
}
}
}
private void Menu_Simple_Identify_OnClick(object sender, RoutedEventArgs e)
{
string sQueryFieldName = "Name";
string stateName = "New York";
FeatureLayer _featureLayer = MainMapView.Map.OperationalLayers[0] as FeatureLayer;
if (_featureLayer != null)
{
QueryStateFeature3(_featureLayer, sQueryFieldName, stateName);
}
}
private async Task QueryStateFeature3(FeatureLayer _featureLayer, string sQueryFieldName, string stateName)
{
try
{
QueryParameters pQueryP = new QueryParameters();
string sformat = stateName.Trim().ToUpper();
pQueryP.WhereClause = "upper(" + sQueryFieldName + ") LIKE '%" + sformat + "%'";
await _featureLayer.SelectFeaturesAsync(pQueryP, Esri.ArcGISRuntime.Mapping.SelectionMode.New);
FeatureQueryResult pQueryResult = await _featureLayer.GetSelectedFeaturesAsync();
List<Feature> pListFeatures = pQueryResult.ToList();
EnvelopeBuilder pEnvBuilder = new EnvelopeBuilder(_featureLayer.SpatialReference);
for (int i = 0; i < pListFeatures.Count; i++)
{
pEnvBuilder.UnionOf(pListFeatures[i].Geometry.Extent);
}
await MainMapView.SetViewpointGeometryAsync(pEnvBuilder.ToGeometry(), 50);
}
catch (Exception ex)
{
System.Windows.MessageBox.Show("【程序出错】" + ex.Message);
}
}
private async void FunClickQuery(MapPoint pPoint, FeatureLayer _featureLayer)
{
double tol = 3; //容差设为3像素
double mapTol = tol * MainMapView.UnitsPerPixel;
MapPoint pNormalPoint = pPoint;
if (MainMapView.IsWrapAroundEnabled)
{
pNormalPoint = (MapPoint)GeometryEngine.NormalizeCentralMeridian(pPoint);
}
Envelope selEnv = new Envelope(pNormalPoint.X - mapTol, pNormalPoint.Y - mapTol, pNormalPoint.X + mapTol,
pNormalPoint.Y + mapTol, MainMapView.SpatialReference);
QueryParameters pQueryPara = new QueryParameters();
pQueryPara.Geometry = selEnv;
pQueryPara.SpatialRelationship = SpatialRelationship.Intersects;
await _featureLayer.SelectFeaturesAsync(pQueryPara, Esri.ArcGISRuntime.Mapping.SelectionMode.New);
FeatureQueryResult pQueryResult = await _featureLayer.GetSelectedFeaturesAsync();
List<Feature> pListFeatures = pQueryResult.ToList();
if (pListFeatures.Count <= 0)
{
return;
}
EnvelopeBuilder pEnvBuilder = new EnvelopeBuilder(_featureLayer.SpatialReference);
for (int i = 0; i < pListFeatures.Count; i++)
{
pEnvBuilder.UnionOf(pListFeatures[i].Geometry.Extent);
}
await MainMapView.SetViewpointGeometryAsync(pEnvBuilder.ToGeometry(), 50);
Feature pFeature;
string sInfo = "";
IReadOnlyList<Field> pFields = pQueryResult.Fields;
for (int i = 0; i < pListFeatures.Count; i++)
{
pFeature = pListFeatures[i];
IDictionary<string,object> FeatureAttri = pFeature.Attributes;
string str;
object obj;
sInfo += "选中的第" + i.ToString() + "个要素的属性\n\r";
for (int j = 0; j < FeatureAttri.Count; j++)
{
str = FeatureAttri.Keys.ElementAt(j);
obj = FeatureAttri.Values.ElementAt(j);
sInfo += str + ":" + obj.ToString() + "\r\n";
}
MessageBox.Show(sInfo);
}
}
private async void FunIndentifyQuery(System.Windows.Point pPoint, FeatureLayer pFLayer)
{
IdentifyLayerResult identifyLayerResult = await MainMapView.IdentifyLayerAsync(pFLayer,pPoint,20,false);
if (!identifyLayerResult.GeoElements.Any())
{
return;
}
Feature identifyFeature = (Feature)identifyLayerResult.GeoElements.First();
IDictionary<string,object> FeatureAttri = identifyFeature.Attributes;
string str;
string tempStr = "";
object obj;
for (int i = 0; i < FeatureAttri.Count; i++)
{
str = FeatureAttri.Keys.ElementAt(i);
obj = FeatureAttri.Values.ElementAt(i);
tempStr += str + ":" + obj.ToString() + "\r\n";
}
System.Windows.MessageBox.Show(tempStr);
}
private void Menu_Click_Indentify_OnClick(object sender, RoutedEventArgs e)
{
m_CurOper = CURRENTOPERATION.SelectQuery;
}
private void Menu_Identify_Indentify_OnClick(object sender, RoutedEventArgs e)
{
m_CurOper = CURRENTOPERATION.IdentifyQuery;
}
}
}

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