【ArcGIS】基于C#的带页面交互功能的AddIn开发

淡淡的烟草味﹌ 2022-09-02 13:54 159阅读 0赞

# 需求 #

关联表记录了4个图层的关键字字段，在AddIn工具输入关联表每一行的OBJECTID，自动搜索4个图层中的相应要素，并缩放至寻找到的要素上，搜索到的要素高亮显示。

# 实现 #

核心代码

// Searcher.cs
    
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    using System.Windows.Forms;
    
    using ESRI.ArcGIS.Controls;
    using ESRI.ArcGIS.ArcMap;
    using ESRI.ArcGIS.ArcMapUI;
    using ESRI.ArcGIS.Carto;
    using ESRI.ArcGIS.Geodatabase;
    using ESRI.ArcGIS.Geometry;
    using ESRI.ArcGIS.Display;
    
    namespace SearchGeometry_addin
    { 
        public class Searcher
        { 
            private IMapDocument pMapDocument = null;
            private IMap pMap = null;
    
            private IFeatureLayer layer_ydpzs = null;
            private IFeatureLayer layer_ydghxk = null;
            private IFeatureLayer layer_jsgcxk = null;
            private IFeatureLayer layer_gctjhs = null;
            private ITable table_relation = null;
    
            private string tableFieldName_ydpzs = "用地批准书号";
            private string tableFieldName_ydghxk = "建设用地规划许可证证号";
            private string tableFieldName_jsgcxk = "建设工程规划许可证证号";
            private string tableFieldName_gctjhs = "建设工程竣工验收条件核实合格证号";
    
            private string layerFieldName_ydpzs = "JSYDPZSH";
            private string layerFieldName_ydghxk = "XKZZH";
            private string layerFieldName_jsgcxk = "XKZZH";
            private string layerFieldName_gctjhs = "HGZZH";
    
            public Searcher() { 
                InitSearcher();
            }
    		
    		// 初始化搜索类，从ArcMap页面读取几个图层
            private void InitSearcher()
            { 
                pMapDocument = ArcMap.Document as IMapDocument;
                pMap = pMapDocument.Map[0];
    
                for (int i = 0; i < pMap.LayerCount; i++)
                { 
                    IFeatureLayer pFeatureLayer = pMap.get_Layer(i) as IFeatureLayer;
                    switch (pFeatureLayer.Name.ToString())
                    { 
                        case "建设用地批准书":
                            this.layer_ydpzs = pFeatureLayer;
                            break;
                        case "建设用地规划许可证":
                            this.layer_ydghxk = pFeatureLayer;
                            break;
                        case "建设工程规划许可证":
                            this.layer_jsgcxk = pFeatureLayer;
                            break;
                        case "建设工程规划条件核实合格证":
                            this.layer_gctjhs = pFeatureLayer;
                            break;
                    }
                }
    
                ITableCollection pTableCollection = pMap as ITableCollection;
                if (pTableCollection.TableCount > 0) { 
                    this.table_relation = pTableCollection.get_Table(0) as ITable;
                }
            }
    
    		// 搜索OBJECTID
            public void SearchOID(int objectID) { 
                if (layer_ydpzs == null || layer_ydghxk == null || layer_jsgcxk == null || layer_gctjhs == null || table_relation == null)
                { 
                    return;
                }
    
                IQueryFilter queryFilter = new QueryFilterClass();
                queryFilter.SubFields = tableFieldName_ydpzs + "," + tableFieldName_ydghxk + ", " + tableFieldName_jsgcxk + ", " + tableFieldName_gctjhs;
                queryFilter.WhereClause = this.table_relation.OIDFieldName + "=" + objectID.ToString();
                ICursor tableCursor = this.table_relation.Search(queryFilter, true);
    
                int tableIndex_ydpzs = this.table_relation.Fields.FindField(tableFieldName_ydpzs);
                int tableIndex_ydghxk = this.table_relation.Fields.FindField(tableFieldName_ydghxk);
                int tableIndex_jsgcxk = this.table_relation.Fields.FindField(tableFieldName_jsgcxk);
                int tableIndex_gctjhs = this.table_relation.Fields.FindField(tableFieldName_gctjhs);
                IRow pRow = null;
    
                // 清空上次查询高亮选项
                IActiveView pActiveView = (IActiveView)pMap;
                pMap.ClearSelection();
    
                while ((pRow = tableCursor.NextRow()) != null)
                { 
                    string tableValue_ydpzs = Convert.ToString(pRow.get_Value(tableIndex_ydpzs)).Trim();
                    string tableValue_ydghxk = Convert.ToString(pRow.get_Value(tableIndex_ydghxk)).Trim();
                    string tableValue_jsgcxk = Convert.ToString(pRow.get_Value(tableIndex_jsgcxk)).Trim();
                    string tableValue_gctjhs = Convert.ToString(pRow.get_Value(tableIndex_gctjhs)).Trim();
    
                    // 用地批准书
                    if (tableValue_ydpzs.Length > 0) { 
                        HighLightLayer(tableValue_ydpzs, layer_ydpzs, layerFieldName_ydpzs);
                        ZoomToFeatureLayerSelection(layer_ydpzs);
                    }
    
                    // 建设用地规划许可
                    if (tableValue_ydghxk.Length > 0)
                    { 
                        HighLightLayer(tableValue_ydghxk, layer_ydghxk, layerFieldName_ydghxk);
                        ZoomToFeatureLayerSelection(layer_ydghxk);
                    }
    
                    // 建设工程许可
                    if (tableValue_jsgcxk.Length > 0)
                    { 
                        HighLightLayer(tableValue_jsgcxk, layer_jsgcxk, layerFieldName_jsgcxk);
                        ZoomToFeatureLayerSelection(layer_jsgcxk);
                    }
    
                    // 建设工程竣工验收条件核实
                    if (tableValue_gctjhs.Length > 0)
                    { 
                        HighLightLayer(tableValue_gctjhs, layer_gctjhs, layerFieldName_gctjhs);
                        ZoomToFeatureLayerSelection(layer_gctjhs);
                    }
    
                    break;
                }
                System.Runtime.InteropServices.Marshal.ReleaseComObject(tableCursor);
    
                
            }
    		
    		// 高亮显示
            public void HighLightLayer(string xkzhStr, IFeatureLayer pFeatureLayer, string layerFieldName) { 
                IQueryFilter queryFilter = new QueryFilterClass();
                queryFilter.WhereClause = layerFieldName + "='" + xkzhStr +"'";
                IFeatureCursor pFeatureCursor = pFeatureLayer.FeatureClass.Search(queryFilter, false);
                IFeature pFeature = null;
    
                while ((pFeature = pFeatureCursor.NextFeature()) != null)
                { 
                    pMap.SelectFeature(pFeatureLayer as ILayer, pFeature);
                    IActiveView pActiveView = (IActiveView)pMap;
                    pActiveView.Refresh();
                }
                System.Runtime.InteropServices.Marshal.ReleaseComObject(pFeatureCursor);
            }
    
            // 缩放至所选的要素
            private void ZoomToFeatureLayerSelection(IFeatureLayer pFeatureLayer)
            { 
                IFeatureSelection featureSelection = pFeatureLayer as IFeatureSelection;
                if (featureSelection.SelectionSet.Count == 0) return;
                IEnumGeometryBind tEnumGeometryBind = new EnumFeatureGeometryClass();
                tEnumGeometryBind.BindGeometrySource(null, featureSelection.SelectionSet);
                IEnumGeometry tEnumGeometry = (IEnumGeometry)tEnumGeometryBind;
                IGeometryFactory tGeometryFactory = new GeometryEnvironmentClass();
                IGeometry tGeometry = tGeometryFactory.CreateGeometryFromEnumerator(tEnumGeometry);
                //缓冲处理，使处于边界的元素在视图中能够完全显示
                ITopologicalOperator mTopologicalOperator = (ITopologicalOperator)tGeometry;
                IGeometry mPolygonBuffer = mTopologicalOperator.Buffer(0.1) as IGeometry;
    
                
                IActiveView pActiveView = (IActiveView)pMap;
                pActiveView.Extent = mPolygonBuffer.Envelope;
                pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeoSelection, featureSelection, tGeometry.Envelope);
            }
        }
    }