导出shp

 private void barButtonItem9_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            IFeatureLayer pFeaLyr = axMapControl1.Map.get_Layer(0) as IFeatureLayer;
            IFeatureClass apFeatureClass = pFeaLyr.FeatureClass;


            if (apFeatureClass == null)
            {
                MessageBox.Show("请选择", "系统提示");
                return;
            }
            //调用保存文件函数
            SaveFileDialog sa = new SaveFileDialog();
            sa.Filter = "SHP文件(.shp)|*.shp";
            sa.ShowDialog();
            sa.CreatePrompt = true;


            string ExportShapeFileName = sa.FileName;
            if (ExportShapeFileName == "")
                return;
            string ExportFileShortName = System.IO.Path.GetFileNameWithoutExtension(ExportShapeFileName);
            string ExportFilePath = System.IO.Path.GetDirectoryName(ExportShapeFileName);
            string shpPath = ExportFilePath + "\\" + ExportFileShortName + "\\" + ExportFileShortName + ".shp";
            //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 ShapefileWorkspaceFactoryClass();
            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;
            //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", "系统提示");
            }
            catch (Exception ex)
            {
                MessageBox.Show("the following exception occurred:" + ex.ToString());
            }
        }