ArcEngine 导出图层（shp）

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http://blog.csdn.net/Good_liu_simalb/article/details/5752967

private void shpToolStripMenuItem_Click(object sender, EventArgs e)
        {
            SaveFileDialog dlg = new SaveFileDialog();
            if (DialogResult.OK == dlg.ShowDialog())
            {
                string file = dlg.FileName.Substring(0, dlg.FileName.LastIndexOf('//'));
                if (!System.IO.Directory.Exists(file))
                {
                    System.IO.Directory.CreateDirectory(file);
                }
                try
                {
                    ILayer pLayer = axMapControl1.Map.get_Layer(0);
                    if (pLayer != null)
                    {
                        IFeatureLayer pFeatureLayer = pLayer as IFeatureLayer;
                        if (pFeatureLayer.Visible)
                        {
                            ExportFeature(pFeatureLayer.FeatureClass,dlg.FileName);
                        }
                    }
                    MessageBox.Show("导出成功");
                }
                catch
                {
                    MessageBox.Show("导出失败！");
                }
            }
        }

        private void ExportShp()
        {
            SaveFileDialog dlg = new SaveFileDialog();
            if (DialogResult.OK == dlg.ShowDialog())
            {
                string file = dlg.FileName.Substring(0, dlg.FileName.LastIndexOf('//'));
                if (!System.IO.Directory.Exists(file))
                {
                    System.IO.Directory.CreateDirectory(file);
                }
                try
                {
                    ILayer pLayer = axMapControl1.Map.get_Layer(1);
                    if (pLayer != null)
                    {
                        IFeatureLayer pFeatureLayer = pLayer as IFeatureLayer;
                        if (pFeatureLayer.Visible)
                        {
                            ExportFeature(pFeatureLayer.FeatureClass, dlg.FileName);
                        }
                    }
                    MessageBox.Show("导出成功");
                }
                catch
                {
                    MessageBox.Show("导出失败！");
                }
            }
        }

        public void ExportFeature(IFeatureClass pInFeatureClass,string pPath)
        {
            // create a new Access workspace factory
            IWorkspaceFactory pWorkspaceFactory = new ShapefileWorkspaceFactoryClass();
            string parentPath=pPath.Substring(0, pPath.LastIndexOf('//'));
            string fileName= pPath.Substring(pPath.LastIndexOf('//') + 1, pPath.Length - pPath.LastIndexOf('//') - 1);
            IWorkspaceName pWorkspaceName = pWorkspaceFactory.Create(parentPath,fileName, null, 0);
            // Cast for IName
            IName name = (IName)pWorkspaceName;
            //Open a reference to the access workspace through the name object
            IWorkspace pOutWorkspace = (IWorkspace)name.Open();

            IDataset pInDataset = pInFeatureClass as IDataset;
            IFeatureClassName pInFCName = pInDataset.FullName as IFeatureClassName;
            IWorkspace pInWorkspace = pInDataset.Workspace;
            IDataset pOutDataset = pOutWorkspace as IDataset;
            IWorkspaceName pOutWorkspaceName = pOutDataset.FullName as IWorkspaceName;
            IFeatureClassName pOutFCName = new FeatureClassNameClass();
            IDatasetName pDatasetName = pOutFCName as IDatasetName;
            pDatasetName.WorkspaceName = pOutWorkspaceName;
            pDatasetName.Name = pInFeatureClass.AliasName;
            IFieldChecker pFieldChecker = new FieldCheckerClass();
            pFieldChecker.InputWorkspace = pInWorkspace;
            pFieldChecker.ValidateWorkspace = pOutWorkspace;
            IFields pFields = pInFeatureClass.Fields;
            IFields pOutFields;
            IEnumFieldError pEnumFieldError;
            pFieldChecker.Validate(pFields, out pEnumFieldError, out pOutFields);
            IFeatureDataConverter pFeatureDataConverter = new FeatureDataConverterClass();
            pFeatureDataConverter.ConvertFeatureClass(pInFCName, null, null, pOutFCName, null, pOutFields, "", 100, 0);
        }

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