C# Cad2016 文字信息导入导出(八)

 public class Class1 : IExtensionApplication
 {
     void IExtensionApplication.Initialize()
     {
         Document doc = Application.DocumentManager.MdiActiveDocument;
         Editor editor = doc.Editor;
         editor.WriteMessage("*********************************\n");
         editor.WriteMessage("* SETDATA：选择文字信息进行导出 *\n");
         editor.WriteMessage("* GETDATA：选择CSV文件进行导入  *\n");
         editor.WriteMessage("*********************************\n");
     }
     //选文本信息导出
     [CommandMethod("GETDATA")]
     public void GETDATA()
     {
         // 获取当前文档和数据库
         Document doc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
         Database db = doc.Database;
         Editor ed = doc.Editor;
         // 获取当前图形数据库的路径
         string path = db.Filename;
         ed.WriteMessage("\n*********************************\n");
         ed.WriteMessage("* SETDATA：选择文字信息进行导出 *\n");
         ed.WriteMessage("* GETDATA：选择CSV文件进行导入  *\n");
         ed.WriteMessage("*********************************\n");

         // 提示用户选择文本
         PromptSelectionResult selectionResult = doc.Editor.GetSelection(new SelectionFilter(new TypedValue[] { new TypedValue((int)DxfCode.Start, "TEXT") }));
         if (selectionResult.Status == PromptStatus.OK)
         {
             using (Transaction trans = db.TransactionManager.StartTransaction())
             {
                 SelectionSet selection = selectionResult.Value;
                 File.Delete(path + "文字信息.csv");
                 StreamWriter mydata = new StreamWriter(path + "文字信息.csv", append: true, Encoding.Default);
                 string value = "图层,名称,X,Y,字高,颜色\t,