ARCGIS add-in导入shp文件

点击“道路要素”或者“红绿灯要素”旁边的打开按钮，即可导入shp文件并添加进当前图层中。

代码如下：

  private void pictureBox3_Click(object sender, EventArgs e)
        {
            IWorkspaceFactory shpFactory = new ShapefileWorkspaceFactoryClass();
            OpenFileDialog ofDialog = new OpenFileDialog();
            ofDialog.Title = "输入ArcMap文档名称";
            ofDialog.Filter = "ArcView Shape文件|*.shp";
            ofDialog.Multiselect = true;//可以多选
            if (ofDialog.ShowDialog() == DialogResult.OK)
            {
                string fileName = ofDialog.FileName;
                string filePath = fileName.Substring(0, fileName.LastIndexOf('\\'));
                IWorkspace shpWorkspace = shpFactory.OpenFromFile(filePath, 0);
                // 选择多个shape文件(取Map名称)
                string[] files = ofDialog.FileNames;
                IEnumDataset ds = shpWorkspace.get_Datasets(esriDatasetType.esriDTFeatureClass);
                IDataset featureClass = ds.Next();
                IMxDocument imd = (IMxDocument)xxxxxxxxxx.Document;
                while (featureClass != null)
                {
                    if (IsFileExists(featureClass.Name, files))
                    {
                        IFeatureLayer featureLayer = new FeatureLayerClass();
                        featureLayer.Name = featureClass.Name;
                        featureLayer.FeatureClass = featureClass as IFeatureClass;
                        ILayer layer = featureLayer as ILayer;
                        //将每一个选择的shp文件添加进图层
                        imd .AddLayer(layer);
                    }
                    featureClass = ds.Next();
                }
                IMap pmap = imd.FocusMap;
                IMxdContents mxdContents = imd.FocusMap as IMxdContents;
                IActiveView pActiveView = (IActiveView)pmap;
                yunxingcanshu.layerroadname = pmap.get_Layer(0).Name;//默认为第一个添加的shp文件
                comboBox1.Items.Add(yunxingcanshu.layerroadname);//更新图层选择下拉框
                comboBox1.SelectedIndex = 0;
                pActiveView.ContentsChanged();
                
            }
           
        }

        private bool IsFileExists(string value, string[] files)
        {
            foreach (string file in files)
            {
                if (file.IndexOf(value + ".shp") > 0)
                    return true;
            }
            return false;
        }