创建空白ShapeFile文件

ゝ一世哀愁。 2022-08-07 04:38 201阅读 0赞

**从目标要素集中复制其字段，（图形字段不复制），复制到新建的空白ShapeFile文件中**

<strong>      </strong>  /// <summary>
            /// 创建空白的ShpFile文件
            /// </summary>
            /// <param name="pFeaClass">源要素集</param>
            /// <param name="sShpFilePath">文件夹路径</param>
            /// <param name="sShpName">文件名称</param>
            /// <returns></returns>
            private bool CreateShpFile(IFeatureClass pFeaClass, string sShpFilePath, string sShpName, bool bIsPoint)
            {
                bool bResult = false;
                const string sShapeFieldName = "SHAPE";
    
                try
                {
                     打开工作空间
                    IWorkspaceFactory pWSF = new ShapefileWorkspaceFactoryClass();
                    IFeatureWorkspace pWS = (IFeatureWorkspace)pWSF.OpenFromFile(sShpFilePath, 0);
    
                     设置字段集
                    IFields pFields = new FieldsClass();
                    IFieldsEdit pFieldsEdit = (IFieldsEdit)pFields;
    
                     设置字段
                    IField pField = new FieldClass();
                    IFieldEdit pFieldEdit = (IFieldEdit)pField;
    
                     创建几何类型字段
                    pFieldEdit.Name_2 = sShapeFieldName;
                    pFieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry;
    
                    IGeometryDef pGeoDef = new GeometryDefClass();
                    IGeometryDefEdit pGeoDefEdit = (IGeometryDefEdit)pGeoDef;
    
                    if (bIsPoint)
                    {
                        pGeoDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPoint;
                    }
                    else
                    {
                        pGeoDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPolyline;
                    }
                     获得要素集的空间参考
                    ISpatialReference pSpatialRef = (pFeaClass as IGeoDataset).SpatialReference;
                    pGeoDefEdit.SpatialReference_2 = pSpatialRef;
    
                    pFieldEdit.GeometryDef_2 = pGeoDef;
                    pFieldsEdit.AddField(pField);
    
                     从源要素集中赋值字段到新的Shp文件
                    for (int i = 0; i < pFeaClass.Fields.FieldCount; i++)
                    {
                        IField pTempField = pFeaClass.Fields.get_Field(i);
                        if (!pTempField.Type.Equals(esriFieldType.esriFieldTypeGeometry))
                        {
                            pFieldsEdit.AddField(pTempField);
                        }
                    }
    
                    pWS.CreateFeatureClass(sShpName, pFields, null, null, esriFeatureType.esriFTSimple, sShapeFieldName, "");
                    bResult = true;
                }
                catch (Exception ex)
                {
                    GtMap.GxComHelper.LogWriter.WriteLog("创建空Shape文件失败", ex);
                }
    
                return bResult;
            }