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);
}
}
/// <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);
}
/* 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);
}
}
//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
{
}
}