From b5a8793281c14ea6c9b96d6ea0d988b388616776 Mon Sep 17 00:00:00 2001
From: PeterZhong <mail@peterzhong1219.site>
Date: Thu, 5 Dec 2024 12:16:44 +0800
Subject: [PATCH] Basic Query Windows

---
 GisDevelop_Exp/MainWindow.xaml    |  9 ++++++
 GisDevelop_Exp/MainWindow.xaml.cs | 52 ++++++++++++++++++++++++++++++-
 2 files changed, 60 insertions(+), 1 deletion(-)

diff --git a/GisDevelop_Exp/MainWindow.xaml b/GisDevelop_Exp/MainWindow.xaml
index db3102e..9eb98cf 100644
--- a/GisDevelop_Exp/MainWindow.xaml
+++ b/GisDevelop_Exp/MainWindow.xaml
@@ -54,6 +54,15 @@
                 <MenuItem x:Name="Menu_Buffer" Header="缓冲" Click="Menu_Buffer_OnClick"></MenuItem>
                 <MenuItem x:Name="Menu_Intersection_Point" Header="求交点" Click="Menu_Intersection_Point_OnClick"></MenuItem>
             </MenuItem>
+            <MenuItem Header="属性查询">
+                <MenuItem x:Name="Menu_Attribute_Query" Header="按属性查询" Click="Menu_Attribute_Query_OnClick"></MenuItem>
+                <MenuItem Header="按位置查询">
+                    <MenuItem x:Name="Menu_Query_Point" Header="点击选择" Click="Menu_Query_Point_OnClick"></MenuItem>
+                    <MenuItem x:Name="Menu_Query_Envelope" Header="拉框选择"></MenuItem>
+                </MenuItem>
+                <Separator></Separator>
+                <MenuItem x:Name="Menu_Clear_Selection" Header="清除选择"></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"
diff --git a/GisDevelop_Exp/MainWindow.xaml.cs b/GisDevelop_Exp/MainWindow.xaml.cs
index 159f2da..acecc9d 100644
--- a/GisDevelop_Exp/MainWindow.xaml.cs
+++ b/GisDevelop_Exp/MainWindow.xaml.cs
@@ -77,6 +77,10 @@ namespace GisDevelop_Exp
         private Point _startPoint;
 
         private List<Graphic> listOfClipGraphics; //几何操作时选择的图形
+        
+        private int selByGeometryType = 0;
+        
+        LocationQueryResultsWindow locationQueryResultsWindow ;
 
         private readonly Dictionary<string, Basemap> _basemapOptions = new Dictionary<string, Basemap>()
         {
@@ -954,7 +958,7 @@ namespace GisDevelop_Exp
             m_CurOper = CURRENTOPERATION.DrawPoint;
         }
 
-        private void MainMapView_OnMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
+        private async void MainMapView_OnMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
         {
             IInputElement mv = (IInputElement)sender;
             MapPoint location = MainMapView.ScreenToLocation(e.GetPosition(mv));
@@ -1003,6 +1007,28 @@ namespace GisDevelop_Exp
                     linesList.Add(lineGraphic);
                 }
             }
+            
+            if(selByGeometryType == 1)//检查是否为按照位置查询中的点选
+            { 
+                IInputElement ie = (IInputElement)sender;//转换事件宿主对象为IInputElement对象
+                IReadOnlyList< IdentifyLayerResult> results =await
+                    MainMapView.IdentifyLayersAsync(e.GetPosition(ie), 15, false);//根据鼠标点在所有图层中进行查询
+                if(results!=null)//查询结果不为空
+                { 
+                    if (locationQueryResultsWindow != null && 
+                        locationQueryResultsWindow.IsClosed)//位置查询结果子窗体已关闭
+                    { 
+                        locationQueryResultsWindow = null;//将子窗体对象置为空
+                    } 
+                    if (locationQueryResultsWindow == null) 
+                    { 
+                        locationQueryResultsWindow = new LocationQueryResultsWindow();//构造新的子窗体对象
+                    } 
+                    locationQueryResultsWindow.ResultCollection = results;//为子窗体引用查询结果集对象
+                    locationQueryResultsWindow.Show();//显示该子窗体
+                    locationQueryResultsWindow.Activate();//使子窗体处于激活状态
+                } 
+            }
         }
 
         private void Menu_Layers_Options_OnClick(object sender, RoutedEventArgs e)
@@ -1512,5 +1538,29 @@ namespace GisDevelop_Exp
         {
             MessageBox.Show("此功能暂未实现");
         }
+
+        private void Menu_Attribute_Query_OnClick(object sender, RoutedEventArgs e)
+        {
+            List<FeatureTable> myTables;
+            myTables = new List<FeatureTable>();
+            for(int i=0;i<MainMapView.Map.OperationalLayers.Count;i++)
+            {
+                FeatureLayer pFL = MainMapView.Map.OperationalLayers[i] as FeatureLayer;
+                if(pFL != null)
+                {
+                    myTables.Add(pFL.FeatureTable);
+                }
+            }
+            AttributeQuery qw = new AttributeQuery();//创建新的查询窗体对象
+            qw.Tables.AddRange(myTables);//为窗体对象的表集合对象添加表集合
+            bool r =(bool) qw.ShowDialog();//以对话框方式显示该子窗体
+        }
+
+        private void Menu_Query_Point_OnClick(object sender, RoutedEventArgs e)
+        {
+            selByGeometryType = 1;//设置其值为1
+        }
+        
+        
     }
 }
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