示例#1
0
        public IWorkspace CreateOrOpenLoaclGeoDataBase(string path, EnumLoaclGeoDatabaseType type)
        {
            try
            {
                IWorkspaceFactory pTargetWsf = null;
                switch (type)
                {
                case EnumLoaclGeoDatabaseType.MDB:
                    pTargetWsf = new AccessWorkspaceFactory();
                    break;

                case EnumLoaclGeoDatabaseType.GDB:
                    pTargetWsf = new FileGDBWorkspaceFactory();
                    break;

                case EnumLoaclGeoDatabaseType.SHP:
                    pTargetWsf = new ShapefileWorkspaceFactory();
                    break;
                }
                if (System.IO.Directory.Exists(path) || System.IO.File.Exists(path))
                {
                    if (pTargetWsf.IsWorkspace(path))
                    {
                        return(pTargetWsf.OpenFromFile(path, 0));
                    }
                    else
                    {
                        ErrorMessage = "当前工作空间已经损坏";
                        return(null);
                    }
                }
                else
                {
                    string         sPath          = System.IO.Path.GetDirectoryName(path);
                    string         sName          = System.IO.Path.GetFileNameWithoutExtension(path);
                    IWorkspaceName pWorkspaceName = pTargetWsf.Create(sPath, sName, null, 0);
                    return(pTargetWsf.Open(pWorkspaceName.ConnectionProperties, 0));
                }
            }
            catch (Exception ex)
            {
                ErrorMessage = ex.Message;
                return(null);
            }
        }
示例#2
0
        /// <summary>
        /// 将layer中的要素选择集selection转换为shape文件
        /// </summary>
        /// <param name="strParaFullPath">除文件名之外的全路径</param>
        /// <param name="strTemLyrName">文件命名,用来创建shape工作空间,可以设置为空字符串</param>
        /// <param name="iParaFeaLayer">当前操作的要素层</param>
        public static bool ExportSelection2Shp(string strParaFullPath, string strTemLyrName, IFeatureLayer iParaFeaLayer)
        {
            //string ExportFilePath = System.IO.Path.GetDirectoryName(strParaFullPath);
            IFeatureClass     m_InFeaClass;
            IDataset          m_InDataSet;
            IDatasetName      m_InDataSetName;
            IFeatureSelection m_FeaSelection;
            IWorkspaceFactory m_WorkspaceFac;
            IWorkspaceName    m_OutWorkspaceName;
            IFeatureClassName m_FeaClassName;
            IDatasetName      m_OutDataSetName;

            DateTime dt             = DateTime.Now;
            string   strTime        = string.Format("{0:yyyyMMddHHmmss}", dt);
            string   ExportFileName = strParaFullPath.Substring(strParaFullPath.LastIndexOf("\\") + 1);//当前文件夹名称
            string   ExportFilePath = strParaFullPath;

            if (string.IsNullOrEmpty(ExportFileName))
            {
                ExportFileName = "导出Shape文件";
            }
            else
            {
                ExportFilePath = ExportFilePath.Substring(0, ExportFilePath.LastIndexOf("\\"));//除了导出文件夹的路径
            }

            m_InFeaClass    = iParaFeaLayer.FeatureClass;
            m_InDataSet     = m_InFeaClass as IDataset;
            m_InDataSetName = m_InDataSet.FullName as IDatasetName;

            m_FeaSelection = iParaFeaLayer as IFeatureSelection;
            ISelectionSet iSelecttionSet = m_FeaSelection.SelectionSet;

            if (strTemLyrName.Trim() == "")
            {
                strTemLyrName = iParaFeaLayer.Name;
            }
            m_WorkspaceFac = new ShapefileWorkspaceFactory();
            //判断指定的文件夹是否已经存在,如果存在则删除之前的文件夹
            //string path=string.Format(strParaFullPath+"\\"+strTemLyrName);
            //if(Directory.Exists(path))
            //    Directory.Delete(path,true);
            m_OutWorkspaceName             = m_WorkspaceFac.Create(ExportFilePath, ExportFileName, null, 0);
            m_FeaClassName                 = new FeatureClassNameClass();
            m_OutDataSetName               = m_FeaClassName as IDatasetName;
            m_OutDataSetName.WorkspaceName = m_OutWorkspaceName;
            m_OutDataSetName.Name          = strTemLyrName + strTime;

            IQueryFilter    filter          = null;
            string          subset          = "";
            IFieldChecker   fieldChecker    = new FieldCheckerClass();
            IFields         shapefileFields = null;
            IEnumFieldError enumFieldError  = null;

            fieldChecker.InputWorkspace    = m_InDataSet.Workspace;
            fieldChecker.ValidateWorkspace = m_InDataSet.Workspace;
            fieldChecker.Validate(m_InFeaClass.Fields, out enumFieldError, out shapefileFields);
            int    iCounter;
            IField pGeoField = null;

            for (iCounter = 0; iCounter < shapefileFields.FieldCount; iCounter++)
            {
                IField field = shapefileFields.get_Field((int)iCounter);
                if (field.Type == esriFieldType.esriFieldTypeGeometry)
                {
                    pGeoField = field;
                }
                if (!IsBlob(field))
                {
                    string fieldName = field.Name;
                    if (fieldName.Contains("_"))
                    {
                        fieldName = fieldName.Replace("_", ".");
                    }
                    subset += (fieldName + ",");
                }
            }
            subset           = subset.Substring(0, subset.LastIndexOf(","));
            filter           = new QueryFilterClass();
            filter.SubFields = subset;

            //得到几何字段的几何定义  --- shape文件没有grid
            //IGeometryDef pOutGeometryDef;
            //IGeometryDefEdit pOutGeometryDefEdit;
            //pOutGeometryDef = pGeoField.GeometryDef;
            ////设置几何字段的空间参考和网格
            //pOutGeometryDefEdit = (IGeometryDefEdit)pOutGeometryDef;
            //pOutGeometryDefEdit.GridCount_2 = 1;
            //pOutGeometryDefEdit.set_GridSize(0, 1500000);
            //pOutGeometryDefEdit.SpatialReference_2 = iParaFeaLayer.SpatialReference;iParaFeaLayer的空间参考只读

            IFeatureDataConverter2 pConvetLayer2Shape = new FeatureDataConverterClass();

            pConvetLayer2Shape.ConvertFeatureClass(m_InDataSetName, filter, iSelecttionSet, null, m_FeaClassName, null, shapefileFields, "", 1000, 0);
            return(true);
        }
示例#3
0
        /* function CreateShapefile
         * Usage: create a new shapefile and return its featureclass
         * Author: JL Ding
         * Time: 2019/04/10
         */
        public IFeatureClass CreateShapefile(String sParentDirectory, String sWorkspaceName, String sType)
        {
            //如果指定的路径下已有此文件夹,则删除
            if (System.IO.Directory.Exists(sParentDirectory + sWorkspaceName))
            {
                System.IO.Directory.Delete(sParentDirectory + sWorkspaceName, true);
            }

            //通过工作空间工厂创建新的工作空间文件夹
            IWorkspaceFactory workspaceFactory = new ShapefileWorkspaceFactory(); //【为什么是这个类用来new?
            IWorkspaceName    workspaceName    = workspaceFactory.Create(sParentDirectory, sWorkspaceName, null, 0);

            ESRI.ArcGIS.esriSystem.IName name = workspaceName as ESRI.ArcGIS.esriSystem.IName;

            IWorkspace workspace = (IWorkspace)name.Open();
            //为什么IName还能转化成IWorkspace?虽然帮助文档说了Use IName to open a workspace object,但是还是不知道会是这么用啊?
            IFeatureWorkspace featureWorkspace = workspace as IFeatureWorkspace;
            //IFeatureWorkspace和IWorkspace都属于workspace类,可以直接相互转换

            IFields fields = new Fields();
            //书上用的FieldsClass(),不知道两者有什么区别
            IFieldsEdit fieldsEdit = fields as IFieldsEdit;



            IFieldEdit fieldEdit = new FieldClass();

            //这边就只能用FieldClass()而不能用Fields()
            fieldEdit.Name_2      = "OID";
            fieldEdit.AliasName_2 = "序号";
            fieldEdit.Type_2      = esriFieldType.esriFieldTypeOID;
            fieldsEdit.AddField((IField)fieldEdit);     //使用IFieldsEdit接口将新建的字段加入字段集

            fieldEdit             = new FieldClass();
            fieldEdit.Name_2      = "Name";
            fieldEdit.AliasName_2 = "名称";
            fieldEdit.Type_2      = esriFieldType.esriFieldTypeString;
            fieldsEdit.AddField((IField)fieldEdit);

            //IGeometryDef geometryDef = new GeometryDefClass();
            IGeometryDefEdit geometryDefEdit = new GeometryDefClass();//geometryDef as IGeometryDefEdit;

            ////这边就只能用GeometryDefClass()而不能用GeometryDef()

            if (sType == "Point")
            {
                geometryDefEdit.GeometryType_2 = ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPoint;
            }
            else if (sType == "Line")
            {
                geometryDefEdit.GeometryType_2 = ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolyline;
            }
            //geometryDefEdit.GeometryType_2 = ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryLine;
            else if (sType == "Polygon")
            {
                geometryDefEdit.GeometryType_2 = ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolygon;
            }
            else
            {
                geometryDefEdit.GeometryType_2 = ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryAny;
            }
            ISpatialReference spatialReference = m_map.SpatialReference;

            geometryDefEdit.SpatialReference_2 = spatialReference;

            fieldEdit             = new FieldClass();
            fieldEdit.Name_2      = "Shape";
            fieldEdit.AliasName_2 = "形状";
            fieldEdit.Type_2      = esriFieldType.esriFieldTypeGeometry;
            IGeometryDef geometryDef = geometryDefEdit;

            fieldEdit.GeometryDef_2 = geometryDef;
            fieldsEdit.AddField((IField)fieldEdit);

            //CreateFeatureClass创建要素
            IFeatureClass featureClass = featureWorkspace.CreateFeatureClass(sWorkspaceName, fields, null, null, esriFeatureType.esriFTSimple, "Shape", "");

            if (featureWorkspace == null)
            {
                return(null);
            }
            else
            {
                return(featureClass);
            }
        }
示例#4
0
        //创建要素
        public void ExportFeature(IFeatureClass apFeatureClass, string ExportFilePath, string ExportFileShortName)
        {
            if (apFeatureClass == null)
            {
                MessageBox.Show("分析出错,请检查路径分析结果", "系统提示");
                return;
            }

            //设置导出要素类的参数
            IFeatureClassName pOutFeatureClassName = new FeatureClassNameClass();
            IDataset          pOutDataset          = (IDataset)apFeatureClass;

            pOutFeatureClassName = (IFeatureClassName)pOutDataset.FullName;
            //创建一个输出shp文件的工作空间
            IWorkspaceFactory pShpWorkspaceFactory = new ShapefileWorkspaceFactory();
            IWorkspaceName    pInWorkspaceName     = new WorkspaceNameClass();

            pInWorkspaceName = pShpWorkspaceFactory.Create(ExportFilePath, ExportFileShortName, null, 0);

            //创建一个要素集合
            IFeatureDatasetName pInFeatureDatasetName = null;
            //创建一个要素类
            IFeatureClassName pInFeatureClassName = new FeatureClassNameClass();
            IDatasetName      pInDatasetClassName;

            pInDatasetClassName               = (IDatasetName)pInFeatureClassName;
            pInDatasetClassName.Name          = ExportFileShortName;//作为输出参数
            pInDatasetClassName.WorkspaceName = pInWorkspaceName;
            //自定义字段
            AddField(apFeatureClass, "Elevation", "", esriFieldType.esriFieldTypeInteger);
            //通过FIELDCHECKER检查字段的合法性,为输出SHP获得字段集合
            long            iCounter;
            IFields         pOutFields, pInFields;
            IFieldChecker   pFieldChecker;
            IField          pGeoField;
            IEnumFieldError pEnumFieldError = null;

            pInFields     = apFeatureClass.Fields;
            pFieldChecker = new FieldChecker();
            pFieldChecker.Validate(pInFields, out pEnumFieldError, out pOutFields);
            //通过循环查找几何字段
            pGeoField = null;
            for (iCounter = 0; iCounter < pOutFields.FieldCount; iCounter++)
            {
                if (pOutFields.get_Field((int)iCounter).Type == esriFieldType.esriFieldTypeGeometry)
                {
                    pGeoField = pOutFields.get_Field((int)iCounter);
                    break;
                }
            }
            //得到几何字段的几何定义
            IGeometryDef     pOutGeometryDef;
            IGeometryDefEdit pOutGeometryDefEdit;

            pOutGeometryDef = pGeoField.GeometryDef;
            //设置几何字段的空间参考和网格
            pOutGeometryDefEdit             = (IGeometryDefEdit)pOutGeometryDef;
            pOutGeometryDefEdit.GridCount_2 = 1;
            pOutGeometryDefEdit.set_GridSize(0, 1500000);
            try
            {
                //开始导入
                IFeatureDataConverter pShpToClsConverter = new FeatureDataConverterClass();
                pShpToClsConverter.ConvertFeatureClass(pOutFeatureClassName, null, pInFeatureDatasetName, pInFeatureClassName, pOutGeometryDef, pOutFields, "", 1000, 0);
                MessageBox.Show("导出成功!");
            }
            catch
            {
            }
        }