ArcEngine c# 创建shp图层，并将要素写入图层保存

之前看了一位大侠的帖子，写的是跟这个差不多的，所以，我就直接copy下来再vs中做了一个类。大家可以直接拿过去用。

using System;

using System.Collections.Generic;
using System.Text;
using ESRI.ArcGIS.Geodatabase;
using System.Windows.Forms;
using ESRI.ArcGIS.DataSourcesFile;

namespace topo.com
{
    /// <summary>
    /// 导出缓冲分析之后出现JointCount>1的点位图层
    /// </summary>
    public  class ExportToShp
    {
        public string shpPath;
        /// <summary>
        /// 保存输出JointCount>1的点位图层
        /// </summary>
        /// <param name="apFeatureClass"></param>
        public void ExportFeatureClassToShp(IFeatureClass apFeatureClass)
        {

            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;

            // string StrFilter = "SHP文件(.shp)|*.shp";
            // string ExportShapeFileName = SaveFileDialog(StrFilter);

            if (ExportShapeFileName == "")
                return;

            string ExportFileShortName = System.IO.Path.GetFileNameWithoutExtension(ExportShapeFileName);
          
            string ExportFilePath = System.IO.Path.GetDirectoryName(ExportShapeFileName);

            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());
            }
        }

    }
}