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  • 《ArcGIS Runtime SDK for .NET开发笔记》--在线编辑

    介绍

    ArcGIS可以发布具有编辑功能的Feature Service。利用Feature Service我们可以实现对数据的在线编辑。 
    数据制作参考: 
    https://server.arcgis.com/zh-cn/server/latest/get-started/windows/tutorial-set-up-feature-service-data-for-offline-use.htm

    实现

    1.主界面

    其中OutFields控制着属性的编辑,*代表都可以写入,也可以只填写你需要编辑的属性字段。

        <Grid>
            <esri:MapView x:Name="MyMapView">
                <esri:Map x:Name="MyMap">
                    <esri:ArcGISTiledMapServiceLayer x:Name="baseMap" ServiceUri="http://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer"/>
                    <esri:FeatureLayer ID="Incidents">
                        <esri:ServiceFeatureTable ServiceUri="http://localhost:6080/arcgis/rest/services/sichuan/test1/FeatureServer/0"
                                                  OutFields="*"/>
                        <!-- ServiceFeatureTable 中的 OutFields 控制着Attribute的编辑-->
                    </esri:FeatureLayer>
                </esri:Map>
            </esri:MapView>
            <StackPanel x:Name="headPanel" Orientation="Horizontal" Margin="20,20,0,0">
                <!-- 绑定编辑按钮-->
                <StackPanel x:Name="headPanelMid" DataContext="{Binding ElementName=MyMapView, Path=Editor}">
    
                </StackPanel>
    
            </StackPanel>
            <Grid x:Name="centerGrid" Margin="200"></Grid>
        </Grid>
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    2.编辑

    界面

    <Grid>
            <StackPanel x:Name="UserEdit" Orientation="Horizontal">
                <Button Content="Edit"
                            Margin="2"
                            IsEnabled="False"
                            x:Name="EditButton"
                            Click="EditButton_Click" />
                <Button Content="Attribute"
                            Margin="2"
                            IsEnabled="False"
                            x:Name="AttributeButton"
                            Click="AttributeButton_Click" />
                <Button Content="Delete"
                            Margin="2"
                            IsEnabled="False"
                            x:Name="DeleteButton"
                            Click="EditButton_Click" />
                <Button Content="Draw"
                            Margin="2"
                            x:Name="DrawButton"
                            Click="DrawButton_Click" />
    
                <Button Content="Delete Vertex"
                            Margin="10,2,2,2"
                            Command="{Binding DeleteVertex}" />
                <Button Content="Undo"
                            Margin="2"
                            Command="{Binding Undo}" />
                <Button Content="Redo"
                            Margin="2"
                            Command="{Binding Redo}" />
                <Button Content="Complete"
                            Margin="2"
                            Command="{Binding Complete}" />
                <Button Content="Cancel"
                            Margin="2"
                            Command="{Binding Cancel}" />
            </StackPanel>
        </Grid>
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    功能

    主要是对Featureservice的图形进行编辑。 
    首先从Featureservice中获取table,在table中进行一系列的操作。UpdateAsync修改的feature,DeleteAsync删除,AddAsync添加。最后通过SaveResult()将编辑结果上传到服务中。

    public Edit()
            {
                InitializeComponent();
                GlobalApp.MyMapView.MapViewTapped += MyMapView_MapViewTapped;
            }
            private async void MyMapView_MapViewTapped(object sender, MapViewInputEventArgs e)
            {
                if (GlobalApp.MyMapView.Editor.IsActive)
                    return;
                var layer = GlobalApp.MyMapView.Map.Layers["Incidents"] as FeatureLayer;
                layer.ClearSelection();
                SetGeometryEditor();
                string message = null;
                try
                {
                    // Performs hit test on layer to select feature.
                    var features = await layer.HitTestAsync(GlobalApp.MyMapView, e.Position);
                    if (features == null || !features.Any())
                        return;
                    var featureID = features.FirstOrDefault();
                    layer.SelectFeatures(new long[] { featureID });
                    var feature = await layer.FeatureTable.QueryAsync(featureID);
                    SetGeometryEditor(feature);
                }
                catch (Exception ex)
                {
                    message = ex.Message;
                }
                if (!string.IsNullOrWhiteSpace(message))
                    MessageBox.Show(message);
            }
            private void SetGeometryEditor(Feature feature = null)
            {
                EditButton.Tag = feature;
                EditButton.IsEnabled = feature == null ? false : true;
                DeleteButton.IsEnabled = feature == null ? false : true;
                AttributeButton.IsEnabled = feature == null ? false : true;
                DrawButton.IsEnabled = feature == null ? true : false;
            }
    
            private async void EditButton_Click(object sender, RoutedEventArgs e)
            {
                var feature = (Feature)EditButton.Tag;
                var layer = GlobalApp.MyMapView.Map.Layers["Incidents"] as FeatureLayer;
                var table = (ArcGISFeatureTable)layer.FeatureTable;
    
                string which_Button = (sender as Button).Content.ToString();
                // Hides feature from feature layer while its geometry is being modified.
                layer.SetFeatureVisibility(layer.SelectedFeatureIDs, false);
    
                string message = null;
                try
                {
                    // Enables geometry editing and update its geometry 
                    // using GeometryEngine to correct ring orientation.
    
                    if (which_Button == "Edit")
                    {
                        var geometry = await GlobalApp.MyMapView.Editor.EditGeometryAsync(feature.Geometry);
                        feature.Geometry = GeometryEngine.Simplify(geometry);
                        await table.UpdateAsync(feature);
                        this.SaveResult(table);
                    }
                    if (which_Button == "Delete")
                    {
                        await table.DeleteAsync(feature);
                        this.SaveResult(table);
                    }   
                    if (which_Button == "Attribute1")
                    {
                        if (GlobalApp.mainwindow.centerGrid.Children != null)
                            GlobalApp.mainwindow.centerGrid.Children.Clear();
                        EditAttribute editAttribute = new EditAttribute(feature);
                        editAttribute.Height = 400;
                        editAttribute.Width = 400;
                        GlobalApp.mainwindow.centerGrid.Children.Add(editAttribute);
                    }
                }
                catch (TaskCanceledException)
                {
                    // Ignore TaskCanceledException - usually happens if the editor gets cancelled or restarted
                }
                catch (Exception ex)
                {
                    message = ex.Message;
                }
                finally
                {
                    layer.SetFeatureVisibility(layer.SelectedFeatureIDs, true);
                    layer.ClearSelection();
                    SetGeometryEditor();
                }
                if (!string.IsNullOrWhiteSpace(message))
                    MessageBox.Show(message);
            }
    
    
    
            private async void DrawButton_Click(object sender, RoutedEventArgs e)
            {
                var layer = GlobalApp.MyMapView.Map.Layers["Incidents"] as FeatureLayer;
                var table = (ArcGISFeatureTable)layer.FeatureTable;
                GeodatabaseFeature feature = table.CreateNew();
                Esri.ArcGISRuntime.Geometry.Geometry addGeo = await GlobalApp.MyMapView.Editor.RequestShapeAsync(DrawShape.Polygon, null);
                feature.Geometry = addGeo;
                await table.AddAsync(feature.Attributes, addGeo);
                this.SaveResult(table);
            }
    
            private async void SaveResult(ArcGISFeatureTable table)
            {
                try
                {
                    string message = null;
                    if (table.HasEdits)
                    {
                        if (table is ServiceFeatureTable)
                        {
                            var serviceTable = (ServiceFeatureTable)table;
                            // Pushes geometry edits back to the server.
                            var result = await serviceTable.ApplyEditsAsync();
                            if (result.UpdateResults == null || result.UpdateResults.Count < 1)
                                return;
                            var updateResult = result.UpdateResults[0];
                            if (updateResult.Error != null)
                                message = updateResult.Error.Message;
                        }
                    }
                }catch(Exception e)
                {
    
                }
            }
    
            private void AttributeButton_Click(object sender, RoutedEventArgs e)
            {
                var feature = (Feature)EditButton.Tag;
                if (GlobalApp.mainwindow.centerGrid.Children != null)
                    GlobalApp.mainwindow.centerGrid.Children.Clear();
                EditAttribute editAttribute = new EditAttribute(feature);
                editAttribute.Height = 400;
                editAttribute.Width = 300;
                GlobalApp.mainwindow.centerGrid.Children.Add(editAttribute);
            }
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    代码下载

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  • 原文地址:https://www.cnblogs.com/telwanggs/p/6437227.html
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