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Finish all seven experiments

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This commit is contained in:
PeterZhong 2024-12-20 11:30:20 +08:00
parent cb2d49e0d2
commit 45943b7e55
3 changed files with 289 additions and 68 deletions
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7
GisDevelop_Exp/MainWindow.xaml
View File

@ -61,7 +61,12 @@
<MenuItem x:Name="Menu_Query_Envelope" Header="拉框选择" Click="Menu_Query_Envelope_OnClick"></MenuItem>
</MenuItem>
<Separator></Separator>
<MenuItem x:Name="Menu_Clear_Selection" Header="清除选择"></MenuItem>
<MenuItem x:Name="Menu_Clear_Selection" Header="清除选择" Click="Menu_Clear_Selection_OnClick"></MenuItem>
</MenuItem>
<MenuItem Header="要素编辑">
<MenuItem x:Name="Menu_Delete" Header="删除" Click="Menu_Delete_OnClick"></MenuItem>
<MenuItem x:Name="Menu_Add" Header="增加面" Click="Menu_Add_OnClick"></MenuItem>
<MenuItem x:Name="Menu_Modify" Header="修改" Click="Menu_Modify_OnClick"></MenuItem>
</MenuItem>
</Menu>
<esri:MapView x:Name="MainMapView" Map="{Binding Map, Source={StaticResource MapViewModel}}" Margin="0,19,0,0"

338
GisDevelop_Exp/MainWindow.xaml.cs
View File

@ -47,7 +47,10 @@ enum CURRENTOPERATION
Cal_Buff,
AttributeQuery,
ClickQuery,
ExtentQuery
ExtentQuery,
DelFeature,
AddPolygonFeature,
ModifyFeature,
}
namespace GisDevelop_Exp
@ -80,9 +83,9 @@ 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 MapPoint _startLocation;
@ -168,6 +171,7 @@ namespace GisDevelop_Exp
String filePath = fileDialog.FileNames.GetValue(i).ToString();
ShapefileFeatureTable openedFeature = await ShapefileFeatureTable.OpenAsync(filePath);
FeatureLayer opendFeatureLayer = new FeatureLayer(openedFeature);
_featureLayer = opendFeatureLayer;
MainMapView.Map.OperationalLayers.Add(opendFeatureLayer);
await MainMapView.SetViewpointGeometryAsync(openedFeature.Extent);
}
@ -207,7 +211,6 @@ namespace GisDevelop_Exp
MainMapView.Map.InitialViewpoint = geodatabaseViewPoint;
// MainMapView.Map = geodatabaseMap;
}
AddLayerNameToList();
}
@ -356,7 +359,7 @@ namespace GisDevelop_Exp
{
AddPrivateOnlineMap();
}
private async void AddPrivateOnlineMap()
{
Map map = new Map(BasemapStyle.ArcGISTopographic);
@ -462,7 +465,7 @@ namespace GisDevelop_Exp
_pGraphicsOverLay.ClearSelection();
return;
}
Esri.ArcGISRuntime.Geometry.Geometry resultGeometry =
GeometryEngine.Union(g1.Geometry, g2.Geometry); //执行联合操作
if (resultGeometry != null) //处理结果
@ -494,7 +497,7 @@ namespace GisDevelop_Exp
{
Graphic g1 = listOfClipGraphics[0];
Graphic g2 = listOfClipGraphics[1];
if (g1.Geometry.GeometryType != GeometryType.Polygon ||
g2.Geometry.GeometryType != GeometryType.Polyline) //如果所选图形不是多边形，则退出
{
@ -512,7 +515,7 @@ namespace GisDevelop_Exp
{
_pGraphicsOverLay.Graphics.Remove(g1);
_pGraphicsOverLay.Graphics.Remove(g2);
for (int z = 0; z < resultGeometry.Length; z++)
{
Graphic clipedGraphic = new Graphic(resultGeometry[z],
@ -526,9 +529,11 @@ namespace GisDevelop_Exp
listOfClipGraphics.Clear(); //清空图形选择集合
_pGraphicsOverLay.ClearSelection(); //清空图形层所选
}
}else if (m_CurOper == CURRENTOPERATION.Cal_Intersection)
}
else if (m_CurOper == CURRENTOPERATION.Cal_Intersect)
{
IdentifyGraphicsOverlayResult gResult_Intersect = await MainMapView.IdentifyGraphicsOverlayAsync(_pGraphicsOverLay, e.Position, 5, false);
IdentifyGraphicsOverlayResult gResult_Intersect =
await MainMapView.IdentifyGraphicsOverlayAsync(_pGraphicsOverLay, e.Position, 5, false);
if (gResult_Intersect.Graphics.Count < 1)
return;
Graphic selGraphic_Intersect = gResult_Intersect.Graphics.First();
@ -539,26 +544,45 @@ namespace GisDevelop_Exp
Graphic g1 = listOfClipGraphics[0];
Graphic g2 = listOfClipGraphics[1];
IReadOnlyList<Geometry> resultGeometry = GeometryEngine.Intersections(g1.Geometry, g2.Geometry); //执行求交点操作
Boolean isIntersect = GeometryEngine.Intersects(g1.Geometry, g2.Geometry);
if (isIntersect)
{
MessageBox.Show("两个图形相交！");
}
else
{
MessageBox.Show("两个图形不相交！");
}
m_CurOper = CURRENTOPERATION.NullOpe;
IReadOnlyList<Geometry>
resultGeometry = GeometryEngine.Intersections(g1.Geometry, g2.Geometry); //执行求交点操作
// Geometry resultGeometry = GeometryEngine.Intersection(g1.Geometry, g2.Geometry); //执行求交操作
if (resultGeometry != null) //处理结果
{
_pGraphicsOverLay.Graphics.Remove(g1);
_pGraphicsOverLay.Graphics.Remove(g2);
foreach (var pointGeometry in resultGeometry)
{
Graphic clipedGraphic = new Graphic(pointGeometry, pointSymbol); //利用求交结果构建新的图形
Graphic clipedGraphic = new Graphic(pointGeometry, fillSymbol); //利用求交结果构建新的图形
_pGraphicsOverLay.Graphics.Add(clipedGraphic);
}
m_CurOper = CURRENTOPERATION.NullOpe;
}
listOfClipGraphics.Clear();//清空图形选择集合
_pGraphicsOverLay.ClearSelection();//清空图形层所选
listOfClipGraphics.Clear(); //清空图形选择集合
_pGraphicsOverLay.ClearSelection(); //清空图形层所选
}
}else if (m_CurOper == CURRENTOPERATION.Cal_Intersect)
}
else if (m_CurOper == CURRENTOPERATION.Cal_Intersection)
{
IdentifyGraphicsOverlayResult gResult_Intersect = await MainMapView.IdentifyGraphicsOverlayAsync(_pGraphicsOverLay, e.Position, 5, false);
IdentifyGraphicsOverlayResult gResult_Intersect =
await MainMapView.IdentifyGraphicsOverlayAsync(_pGraphicsOverLay, e.Position, 5, false);
if (gResult_Intersect.Graphics.Count < 1)
return;
Graphic selGraphic_Intersect = gResult_Intersect.Graphics.First();
@ -575,17 +599,20 @@ namespace GisDevelop_Exp
{
_pGraphicsOverLay.Graphics.Remove(g1);
_pGraphicsOverLay.Graphics.Remove(g2);
Graphic clipedGraphic = new Graphic(resultGeometry, pointSymbol); //利用求交结果构建新的图形
_pGraphicsOverLay.Graphics.Add(clipedGraphic);
m_CurOper = CURRENTOPERATION.NullOpe;
}
listOfClipGraphics.Clear();//清空图形选择集合
_pGraphicsOverLay.ClearSelection();//清空图形层所选
listOfClipGraphics.Clear(); //清空图形选择集合
_pGraphicsOverLay.ClearSelection(); //清空图形层所选
}
}else if (m_CurOper == CURRENTOPERATION.Cal_Clip)
}
else if (m_CurOper == CURRENTOPERATION.Cal_Clip)
{
IdentifyGraphicsOverlayResult gResult_Intersect = await MainMapView.IdentifyGraphicsOverlayAsync(_pGraphicsOverLay, e.Position, 5, false);
IdentifyGraphicsOverlayResult gResult_Intersect =
await MainMapView.IdentifyGraphicsOverlayAsync(_pGraphicsOverLay, e.Position, 5, false);
if (gResult_Intersect.Graphics.Count < 1)
return;
Graphic selGraphic_Intersect = gResult_Intersect.Graphics.First();
@ -595,21 +622,23 @@ namespace GisDevelop_Exp
{
Graphic g1 = listOfClipGraphics[0];
Graphic g2 = listOfClipGraphics[1];
Geometry resultGeometry = GeometryEngine.Clip(g1.Geometry, g2.Geometry.Extent); //执行求交操作
if (resultGeometry != null) //处理结果
{
_pGraphicsOverLay.Graphics.Remove(g1);
_pGraphicsOverLay.Graphics.Remove(g2);
Graphic clipedGraphic = new Graphic(resultGeometry, fillSymbol); //利用求交结果构建新的图形
_pGraphicsOverLay.Graphics.Add(clipedGraphic);
m_CurOper = CURRENTOPERATION.NullOpe;
}
listOfClipGraphics.Clear();//清空图形选择集合
_pGraphicsOverLay.ClearSelection();//清空图形层所选
listOfClipGraphics.Clear(); //清空图形选择集合
_pGraphicsOverLay.ClearSelection(); //清空图形层所选
}
}else if (m_CurOper == CURRENTOPERATION.Cal_Simplify)
}
else if (m_CurOper == CURRENTOPERATION.Cal_Simplify)
{
IdentifyGraphicsOverlayResult gResult_Buff =
await MainMapView.IdentifyGraphicsOverlayAsync(_pGraphicsOverLay, e.Position, 5, false);
@ -629,18 +658,23 @@ namespace GisDevelop_Exp
if (resultGeometry != null) //处理结果
{
_pGraphicsOverLay.Graphics.Remove(g1); //从图形层中移除原图形
if(resultGeometry.GeometryType == GeometryType.Point || resultGeometry.GeometryType == GeometryType.Multipoint){
if (resultGeometry.GeometryType == GeometryType.Point ||
resultGeometry.GeometryType == GeometryType.Multipoint)
{
Graphic simplifiedGraphic = new Graphic(resultGeometry, pointSymbol); //利用剪切结果构造新的图形
_pGraphicsOverLay.Graphics.Add(simplifiedGraphic);
}else if (resultGeometry.GeometryType == GeometryType.Polyline)
}
else if (resultGeometry.GeometryType == GeometryType.Polyline)
{
Graphic simplifiedGraphic = new Graphic(resultGeometry, lineSymbol); //利用剪切结果构造新的图形
_pGraphicsOverLay.Graphics.Add(simplifiedGraphic);
}else if (resultGeometry.GeometryType == GeometryType.Polygon)
}
else if (resultGeometry.GeometryType == GeometryType.Polygon)
{
Graphic simplifiedGraphic = new Graphic(resultGeometry, fillSymbol); //利用剪切结果构造新的图形
_pGraphicsOverLay.Graphics.Add(simplifiedGraphic);
}
m_CurOper = CURRENTOPERATION.NullOpe;
}
@ -648,6 +682,125 @@ namespace GisDevelop_Exp
_pGraphicsOverLay.ClearSelection(); //清空图形层所选
}
}
else if (m_CurOper == CURRENTOPERATION.DelFeature)
{
if (_featureLayer == null)
return;
_featureLayer.ClearSelection();
// 取消标注
MainMapView.DismissCallout();
try
{
// 执行点击查询
IdentifyLayerResult identifyResult = await
MainMapView.IdentifyLayerAsync(_featureLayer, e.Position, 2, false);
// 判断是否选中要素
if (!identifyResult.GeoElements.Any())
return;
//获取选中的第一个要素
Feature tappedFeature = (Feature)identifyResult.GeoElements[0];
// 将要素放到选择集中
// _featureLayer.SelectFeature(tappedFeature);
// 显示callout，提示是否删除要素
ShowDeletionCallout(tappedFeature);
//// 删除要素.
// await _featureLayer.FeatureTable.DeleteFeatureAsync(tappedFeature);
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), "There was a problem.");
}
}else if ( m_CurOper == CURRENTOPERATION.AddPolygonFeature)
{
if (linePoints == null)
linePoints = new List<MapPoint>();
if (linesList == null)
linesList = new List<Graphic>();
linePoints.Add(e.Location);//将当前点加入点集
if (linePoints.Count >= 2)//如果点集中点数足够
{
if (linesList.Count > 0 && linePoints.Count > 2)//已有加入的线图形，则移除当前的图形，重新加入新的图形
{
Graphic curGraphic = linesList[linesList.Count - 1];
MainMapView.GraphicsOverlays[0].Graphics.Remove(curGraphic);
linesList.Remove(curGraphic);
}
//SimpleLineSymbol lineSymbol = new SimpleLineSymbol();
//lineSymbol.Color = Color.Blue;
//lineSymbol.Style = SimpleLineSymbolStyle.Dash;
//lineSymbol.Width = 3;
Esri.ArcGISRuntime.Geometry.Polygon line = new
Esri.ArcGISRuntime.Geometry.Polygon(linePoints);//由点集构造线
Graphic lineGraphic = new Graphic(line, fillSymbol);//由线创建图形
MainMapView.GraphicsOverlays[0].Graphics.Add(lineGraphic);//加入该图形元素到覆盖层中
linesList.Add(lineGraphic);//同时，将该图形加入链表
}
}else if (m_CurOper== CURRENTOPERATION.ModifyFeature)
{
if (_featureLayer == null)
return;
_featureLayer.ClearSelection();
// 取消标注
MainMapView.DismissCallout();
try
{
// 执行点击查询
IdentifyLayerResult identifyResult = await
MainMapView.IdentifyLayerAsync(_featureLayer, e.Position, 2, false);
// 判断是否选中要素
if (!identifyResult.GeoElements.Any())
return;
//获取选中的第一个要素
Feature tappedFeature = (Feature)identifyResult.GeoElements[0];
// 将要素放到选择集中
_featureLayer.SelectFeature(tappedFeature);
// 显示callout，提示是否修改要素
// ShowModifyCallout(tappedFeature);
// 修改要素.
string sNewName = "New";
tappedFeature.SetAttributeValue("XZQMC", sNewName);
await _featureLayer.FeatureTable.UpdateFeatureAsync(tappedFeature);
MessageBox.Show("Modify feature with Success!");
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), "There was a problem.");
}
}
}
private void ShowDeletionCallout(Feature tappedFeature)
{
// 为删除要素创建一个button.
Button deleteButton = new Button();
deleteButton.Content = "删除要素";
deleteButton.Padding = new Thickness(5);
deleteButton.Tag = tappedFeature;
// Click事件委托
deleteButton.Click += DeleteButton_Click;
// 显示标注
MainMapView.ShowCalloutAt(tappedFeature.Geometry.Extent.GetCenter(), deleteButton);
}
private async void DeleteButton_Click(object sender, RoutedEventArgs e)
{
// 取消标注
MainMapView.DismissCallout();
try
{
Button deleteButton = (Button)sender;
Feature featureToDelete = (Feature)deleteButton.Tag;
// 删除要素.
await _featureLayer.FeatureTable.DeleteFeatureAsync(featureToDelete);
// 如果是网络数据，需要调用以下语句进行网络服务器端的数据同步更新Sync the change with the service.
// ServiceFeatureTable serviceTable = (ServiceFeatureTable)_featureLayer.FeatureTable;
// await serviceTable.ApplyEditsAsync();
MessageBox.Show("Deleted feature with Success!");
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), "Couldn't delete feature");
}
}
private void Menu_Simple_Identify_OnClick(object sender, RoutedEventArgs e)
@ -901,7 +1054,7 @@ namespace GisDevelop_Exp
CheckBox cb = sender as CheckBox;
cb.IsChecked = true;
int index = GetLayerIndex(cb.ToolTip as string);
MainMapView.Map.OperationalLayers[index].IsVisible = true;
MainMapView.Map.OperationalLayers[index-1].IsVisible = true;
}
internal static class Utils
@ -1010,27 +1163,29 @@ namespace GisDevelop_Exp
linesList.Add(lineGraphic);
}
}
if(m_CurOper == CURRENTOPERATION.ClickQuery)//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
}
if (m_CurOper == CURRENTOPERATION.ClickQuery) //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
}
}
else if (m_CurOper == CURRENTOPERATION.ExtentQuery)
{
@ -1052,11 +1207,12 @@ namespace GisDevelop_Exp
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);
SimpleFillSymbol fillSymbol =
new SimpleFillSymbol(SimpleFillSymbolStyle.Solid, fillColor, lineSymbol);
Graphic polygonGraphic = new Graphic(polygon, fillSymbol);
MainMapView.GraphicsOverlays.Add(new GraphicsOverlay());
MainMapView.GraphicsOverlays[0].Graphics.Add(polygonGraphic);
Envelope selEnv = new Envelope(this._startLocation.X, this._startLocation.Y, location.X,
location.Y, MainMapView.SpatialReference);
QueryParameters pQueryPara = new QueryParameters();
@ -1096,9 +1252,10 @@ namespace GisDevelop_Exp
string featureName = pFeature.FeatureTable.Layer.Name;
attributes.Add(FeatureAttri);
}
queryResults.Add(new QueryResult(featureLayerName, attributes));
}
ExtentLocationQueryResultsWindow resultsWindow = new ExtentLocationQueryResultsWindow();
resultsWindow.resultCollection = queryResults;
resultsWindow.Show();
@ -1135,8 +1292,44 @@ namespace GisDevelop_Exp
private void MainMapView_OnMouseRightButtonDown(object sender, MouseButtonEventArgs e)
{
if (m_CurOper== CURRENTOPERATION.AddPolygonFeature && linePoints != null)
{
Polygon poly = new Polygon(linePoints);//由点集构造线
AddFeature(poly, _featureLayer);
if (linePoints != null)
linePoints.Clear();
if (linesList != null)
linesList.Clear();
}
m_CurOper = CURRENTOPERATION.NullOpe;
}
private async void AddFeature(Geometry pGeo, FeatureLayer pFeatureL)
{
try
{
if (pGeo.GeometryType != pFeatureL.FeatureTable.GeometryType)
{
MessageBox.Show("几何类型和图层要素类型不匹配");
return;
}
// 创建要素
Feature feature = (Feature)pFeatureL.FeatureTable.CreateFeature();
feature.Geometry = pGeo;
// 设置要素属性.
feature.SetAttributeValue("XZQMC", "Test");
// 将要素增加到数据表中.
await pFeatureL.FeatureTable.AddFeatureAsync(feature);
// 如果图层是网上数据，需同步跟新数据
//await pFeatureL.FeatureTable.ApplyEditsAsync();
feature.Refresh();
MessageBox.Show("Created feature Success!");
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), "Error adding feature");
}
}
private void SetSimpleRender(FeatureLayer pLayer, Symbol pSymbol)
{
@ -1621,30 +1814,51 @@ namespace GisDevelop_Exp
{
List<FeatureTable> myTables;
myTables = new List<FeatureTable>();
for(int i=0;i<MainMapView.Map.OperationalLayers.Count;i++)
for (int i = 0; i < MainMapView.Map.OperationalLayers.Count; i++)
{
FeatureLayer pFL = MainMapView.Map.OperationalLayers[i] as FeatureLayer;
if(pFL != null)
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
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
selByGeometryType = 1; //设置其值为1
m_CurOper = CURRENTOPERATION.ClickQuery;
}
private void Menu_Query_Envelope_OnClick(object sender, RoutedEventArgs e)
{
selByGeometryType = 2;//设置其值为2
selByGeometryType = 2; //设置其值为2
m_CurOper = CURRENTOPERATION.ExtentQuery;
}
private void Menu_Delete_OnClick(object sender, RoutedEventArgs e)
{
m_CurOper = CURRENTOPERATION.DelFeature;
}
private void Menu_Add_OnClick(object sender, RoutedEventArgs e)
{
m_CurOper = CURRENTOPERATION.AddPolygonFeature;
}
private void Menu_Modify_OnClick(object sender, RoutedEventArgs e)
{
m_CurOper = CURRENTOPERATION.ModifyFeature;
}
private void Menu_Clear_Selection_OnClick(object sender, RoutedEventArgs e)
{
_featureLayer.ClearSelection();
}
}
}

12
GisDevelop_Exp/QueryResultWindow.xaml.cs
View File

@ -35,15 +35,15 @@ namespace GisDevelop_Exp
private void QueryResultWindow_OnLoaded(object sender, RoutedEventArgs e)
{
if (featureQuerySet != null)//结果不为空
if (featureQuerySet != null)
{
dataGridResult.AutoGenerateColumns = true;//数据格网控件自动生成列
dataGridResult.AutoGenerateColumns = true;
for(int i=1;i<= featureQuerySet.Count();i++)
{
comboBoxSelectionCount.Items.Add(i);//按照查询结果集中要素的数目为组合框添加项
comboBoxSelectionCount.Items.Add(i);
}
Feature ft = featureQuerySet.First();//取得查询结果集合中第一个要素
dataGridResult.ItemsSource = ft.Attributes;//设置数据格网对象中项的数据源
Feature ft = featureQuerySet.First();
dataGridResult.ItemsSource = ft.Attributes;
// ft.FeatureTable.FeatureLayer.SelectFeature(ft);
comboBoxSelectionCount.SelectedIndex = 0;
((FeatureLayer)ft.FeatureTable.Layer).SelectFeature(ft);
@ -60,6 +60,8 @@ namespace GisDevelop_Exp
{
Feature ft = featureQuerySet.ElementAt(idx);//获取索引所在的要素对象
dataGridResult.ItemsSource = ft.Attributes;//设置数据格网对象中项的数据源
((FeatureLayer)ft.FeatureTable.Layer).ClearSelection();
((FeatureLayer)ft.FeatureTable.Layer).SelectFeature(ft);
// ft.FeatureTable.FeatureLayer.ClearSelection();//清空图层中的原有的选择
// ft.FeatureTable.FeatureLayer.SelectFeature(ft);//在图层中重新选择当前所选要素
}