• 复制要素类copyFeatureClass

    转自：http://blog.csdn.net/chanyinhelv/article/details/8696538

    非常感谢！

    ---------------------------------------------------------------------------------------------------------

      1 using System;
  2 using System.Collections.Generic;
  3 using System.Text;
  4 using ESRI.ArcGIS.Geodatabase;
  5 using ESRI.ArcGIS.Geometry;
  6 using ESRI.ArcGIS.Carto;
  7 namespace MyGISClass
  8 {
  9     /// <summary>
 10     /// 该类主要包含了要素类的复制以及同要素类数据的加载
 11     /// 函数主要用于SDE与Personal GDB之间数据的处理
 12     /// </summary>
 13     class FeatureClassDataManager
 14     {
 15         /// <summary>
 16         /// 根据传入的源要素类OldFeatureClass,新空间范围,要素存储工作空间,新要素类名
 17         /// 产生具有相同字段结构和不同空间范围的要素类
 18         /// </summary>
 19         /// <param name="OldFeatureClass">源要素类</param>
 20         /// <param name="SaveFeatWorkspace">存储工作空间</param>
 21         /// <param name="FeatClsName">新要素类名</param>
 22         /// <param name="pDomainEnv">新空间范围,可为null</param>
 23         /// <returns></returns>
 24         public IFeatureClass CloneFeatureClassInWorkspace(IFeatureClass OldFeatureClass, IFeatureWorkspace SaveFeatWorkspace, string FeatClsName, IEnvelope pDomainEnv)
 25         {
 26             IFields pFields = CloneFeatureClassFields(OldFeatureClass, pDomainEnv);
 27             return SaveFeatWorkspace.CreateFeatureClass(FeatClsName, pFields, null, null, esriFeatureType.esriFTSimple, OldFeatureClass.ShapeFieldName, "");
 28         }
 29         /// <summary>
 30         /// 复制AnnotationClass,未完待续
 31         /// </summary>
 32         /// <param name="OldFeatureClass"></param>
 33         /// <param name="SaveFeatWorkspace"></param>
 34         /// <param name="FeatClsName"></param>
 35         /// <param name="pDomainEnv"></param>
 36         /// <returns></returns>
 37         public IFeatureClass CloneAnnotationClassInWorkspace(IFeatureClass OldFeatureClass, IFeatureWorkspace SaveFeatWorkspace, string FeatClsName, IEnvelope pDomainEnv)
 38         {
 39             IFeatureWorkspaceAnno pFWSAnno = (IFeatureWorkspaceAnno)SaveFeatWorkspace;
 40             IAnnoClass pAnnoClass = (IAnnoClass)OldFeatureClass.Extension;
 41             return null;
 42         }
 43         /// <summary>
 44         /// 将inFeatureClass要素类中所有符合pQueryFilter的要素复制到saveFeatureClass中,仅复制不做任何修改
 45         /// </summary>
 46         /// <param name="inFeatureClass">源要素类</param>
 47         /// <param name="saveFeatureClass">存储要素类</param>
 48         /// <param name="pQueryFilter">过滤参数</param>
 49         /// <returns></returns>
 50         public bool LoadFeatureClass(IFeatureClass inFeatureClass, IFeatureClass saveFeatureClass, IQueryFilter pQueryFilter)
 51         {
 52             //生成两个要素类字段的对应表
 53             Dictionary<int, int> pFieldsDict = new Dictionary<int, int>();
 54             this.GetFCFieldsDirectory(inFeatureClass, saveFeatureClass, ref pFieldsDict);
 55             IFeatureCursor pinFeatCursor = inFeatureClass.Search(pQueryFilter, false);
 56             long nCount = inFeatureClass.FeatureCount(pQueryFilter);
 57             IFeature pinFeat = pinFeatCursor.NextFeature();
 58             IFeatureCursor psaveFeatCursor = saveFeatureClass.Insert(true);
 59             //使用IFeatureBuffer在内存中产生缓存避免多次打开,关闭数据库
 60             IFeatureBuffer psaveFeatBuf = null;
 61             IFeature psaveFeat = null;
 62             long n = 0;
 63             while (pinFeat != null)
 64             {
 65                 try
 66                 {
 67                     psaveFeatBuf = saveFeatureClass.CreateFeatureBuffer();
 68                     psaveFeat = psaveFeatBuf as IFeature;
 69                     if (inFeatureClass.FeatureType == esriFeatureType.esriFTAnnotation)
 70                     {
 71                         IAnnotationFeature pAF = (IAnnotationFeature)pinFeat;
 72                         IAnnotationFeature pNAF = (IAnnotationFeature)psaveFeat;
 73                         if (pAF.Annotation != null)
 74                         {
 75                             pNAF.Annotation = pAF.Annotation;
 76                         }
 77                     }
 78                     psaveFeat.Shape = pinFeat.Shape;
 79                     foreach (KeyValuePair<int, int> keyvalue in pFieldsDict)
 80                     {
 81                         if (pinFeat.get_Value(keyvalue.Key).ToString() == "")
 82                         {
 83                             if (psaveFeat.Fields.get_Field(keyvalue.Value).Type == esriFieldType.esriFieldTypeString)
 84                             {
 85                                 psaveFeat.set_Value(keyvalue.Value, "");
 86                             }
 87                             else
 88                             {
 89                                 psaveFeat.set_Value(keyvalue.Value, 0);
 90                             }
 91                         }
 92                         else
 93                         {
 94                             psaveFeat.set_Value(keyvalue.Value, pinFeat.get_Value(keyvalue.Key));
 95                         }
 96                     }
 97                     psaveFeatCursor.InsertFeature(psaveFeatBuf);
 98                 }
 99                 catch (Exception ex) { }
100                 finally
101                 {
102                     psaveFeat = null;
103                     n++;
104                     if (n % 2000 == 0)
105                     {
106                         psaveFeatCursor.Flush();
107                     }
108                     pinFeat = pinFeatCursor.NextFeature();
109                 }
110             }
111             psaveFeatCursor.Flush();
112             return true;
113         }
114         private IFields CloneFeatureClassFields(IFeatureClass pFeatureClass, IEnvelope pDomainEnv)
115         {
116             IFields pFields = new FieldsClass();
117             IFieldsEdit pFieldsEdit = (IFieldsEdit)pFields;
118             //根据传入的要素类,将除了shape字段之外的字段复制
119             long nOldFieldsCount = pFeatureClass.Fields.FieldCount;
120             long nOldGeoIndex = pFeatureClass.Fields.FindField(pFeatureClass.ShapeFieldName);
121             for (int i = 0; i < nOldFieldsCount; i++)
122             {
123                 if (i != nOldGeoIndex)
124                 {
125                     pFieldsEdit.AddField(pFeatureClass.Fields.get_Field(i));
126                 }
127                 else
128                 {
129                     IGeometryDef pGeomDef = new GeometryDefClass();
130                     IGeometryDefEdit pGeomDefEdit = (IGeometryDefEdit)pGeomDef;
131                     ISpatialReference pSR = null;
132                     if (pDomainEnv != null)
133                     {
134                         pSR = new UnknownCoordinateSystemClass();
135                         pSR.SetDomain(pDomainEnv.XMin, pDomainEnv.XMax, pDomainEnv.YMin, pDomainEnv.YMax);
136                     }
137                     else
138                     {
139                         IGeoDataset pGeoDataset = pFeatureClass as IGeoDataset;
140                         pSR = CloneSpatialReference(pGeoDataset.SpatialReference);
141                     }
142                     //设置新要素类Geometry的参数
143                     pGeomDefEdit.GeometryType_2 = pFeatureClass.ShapeType;
144                     pGeomDefEdit.GridCount_2 = 1;
145                     pGeomDefEdit.set_GridSize(0, 10);
146                     pGeomDefEdit.AvgNumPoints_2 = 2;
147                     pGeomDefEdit.SpatialReference_2 = pSR;
148                     //产生新的shape字段
149                     IField pField = new FieldClass();
150                     IFieldEdit pFieldEdit = (IFieldEdit)pField;
151                     pFieldEdit.Name_2 = "shape";
152                     pFieldEdit.AliasName_2 = "shape";
153                     pFieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry;
154                     pFieldEdit.GeometryDef_2 = pGeomDef;
155                     pFieldsEdit.AddField(pField);
156                 }
157             }
158             return pFields;
159         }
160         private ISpatialReference CloneSpatialReference(ISpatialReference pSrcSpatialReference)
161         {
162             double xmin, xmax, ymin, ymax;
163             pSrcSpatialReference.GetDomain(out xmin, out xmax, out ymin, out ymax);
164             ISpatialReference pSR = new UnknownCoordinateSystemClass();
165             pSR.SetDomain(xmin, xmax, ymin, ymax);
166             return pSR;
167         }
168         private void GetFCFieldsDirectory(IFeatureClass pFCold,IFeatureClass pFCnew,ref Dictionary<int,int> FieldsDictionary)
169         {
170             for(int i=0;i<pFCold.Fields.FieldCount;i++)
171             {
172                 string tmpstrold=pFCold.Fields.get_Field(i).Name.ToUpper();
173                 switch(tmpstrold)
174                 {
175                     case "OBJECTID":
176                     case "SHAPE":
177                     case "SHAPE_LENGTH":
178                     case "SHAPE_AREA":
179                     case "FID":
180                         {
181                             //以上字段由系统自动生成
182                             break;
183                         }
184                     default:
185                         {
186                             for(int j=0;j<pFCnew.Fields.FieldCount;j++)
187                             {
188                                 string tmpstrnew=pFCnew.Fields.get_Field(j).Name.ToUpper();
189                                 if(tmpstrold==tmpstrnew)
190                                 {
191                                     FieldsDictionary.Add(i,j);
192                                     break;
193                                 }
194                             }
195                             break;
196                         }
197                 }
198             }
199         }
200     }
201 }

    方法二：

    转自：http://www.cnblogs.com/henyihanwobushi/archive/2013/03/21/2972415.html

     1 /// <summary>
 2 
 3 ///复制一个IFeatureClass中的要素到另外一个当中
 4 
 5 /// </summary>
 6 
 7 /// <param name="pFromFeatureClass">源数据所在的IFeatureClass</param>       
 8 
 9 /// <param name="pToFeatureClass">目标数据所在的IFeatureClass</param>
10 
11 private void CopyFeatureClass(IFeatureClass pFromFeatureClass, IFeatureClass pToFeatureClass)
12 
13 {
14 
15 　　try {
16 
17 　　　　IFeatureCursor pFromFeatureCursor = pFromFeatureClass.Search(null, false);
18 
19 　　　　IFeatureCursor pToFeatureCursor = pToFeatureClass.Insert(true);
20 
21 　　　　IFeatureBuffer pFeatureBuffer = pToFeatureClass.CreateFeatureBuffer();
22 
23 　　　　IFeature pFromFeature = pFromFeatureCursor.NextFeature();
24 
25 　　　　while (pFromFeature != null)
26 
27 　　　　{
28 
29 　　　　　　int IndexShape = pFeatureBuffer.Fields.FindField("Shape");
30 
31 　　　　　　pFeatureBuffer.set_Value(IndexShape, pFromFeature);
32 
33 　　　　　　pFeatureBuffer.Shape = pFromFeature.Shape;
34 
35 　　　　　　pToFeatureCursor.InsertFeature(pFeatureBuffer);
36 
37 　　　　　　pFromFeature = pFromFeatureCursor.NextFeature();
38 
39 　　　　　　pFeatureBuffer = pToFeatureClass.CreateFeatureBuffer();
40 
41 　　　　}
42 
43       　　pToFeatureCursor.Flush();
44 
45 　　}
46 
47 　　catch (Exception ex)
48 
49 　　{
50 
51 　　　　throw ex;
52 
53 　　}
54 
55 }
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  • 原文地址：https://www.cnblogs.com/marvelousone/p/7448153.html
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