求助

Question

在 cadjiaohu.Form1.查询ToolStripMenuItem1_Click(Object sender, EventArgs e) 位置 E:\vs\cadjiaohu\Form1.cs:行号 113
只能说到里了，你也不贴有用的代码，这些代码什么也看不出来？

Answer 1

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using Autodesk.AutoCAD.Interop;
using Autodesk.AutoCAD.Interop.Common;
using System.Reflection;
using Microsoft.VisualBasic.ApplicationServices;
namespace cadjiaohu
{
    public partial class Form1 : Form
    {
        AcadLine returnLine;
        AcadPoint returnPointObj;
        AcadBlockReference returnBlock;
        AcadCircle returncircle;
        AcadText returnTextObj;
        AcadMText returnMTextObj;
        AcadSpline returnSpline;
        AcadLWPolyline returnPolyLine;
        AcadSelectionSet mySelectionSet;
        public Int16[] FilterType= new Int16[4]{0,0,0,0}; 
        public object[] FilterData= new object[4]{"*","*","*","*"};
        public Form1()
        {
            InitializeComponent();
        }        private void Form1_Load(object sender, EventArgs e)
        {        }        private void 新建ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            try
            {
                chuangkou = (AcadApplication)Marshal.GetActiveObject("AutoCAD.Application");
            }
            catch
            {
                chuangkou = new AcadApplication();
            }
            finally
            {
                wenjian = chuangkou.ActiveDocument;
                chuangkou.BeginQuit += new _DAcadApplicationEvents_BeginQuitEventHandler(chuangkou_BeginQuit);
                chuangkou.Visible = true;
                Microsoft.VisualBasic.Interaction.AppActivate(chuangkou.Caption);
            }
        }        private void chuangkou_BeginQuit(ref bool Cancel)
        {
                chuangkou = null;
                wenjian = null;
                MessageBox.Show("结束了CAD程序");
        }        private void 打开ToolStripMenuItem_Click(object sender, EventArgs e)
        {            DialogResult jieguo;
            jieguo = openFileDialog1.ShowDialog();
            if (jieguo == DialogResult.OK)
            {
                if (openFileDialog1.FileName == null)
                    MessageBox.Show("请选择有效的文件");
                else
                {
                    try
                    {
                        chuangkou = (AcadApplication)Marshal.GetActiveObject("AutoCAD.Application");
                    }
                    catch
                    {
                        chuangkou = new AcadApplication();
                    }
                    finally
                    {
                        chuangkou.BeginQuit += new _DAcadApplicationEvents_BeginQuitEventHandler(chuangkou_BeginQuit);
                        chuangkou.Visible = true;
                        Microsoft.VisualBasic.Interaction.AppActivate(chuangkou.Caption);
                    }
                    chuangkou.Application.Visible = true;
                    wenjian = chuangkou.Documents.Open(openFileDialog1.FileName, null, null);
                    chuangkou.BeginQuit+=new _DAcadApplicationEvents_BeginQuitEventHandler(chuangkou_BeginQuit);
                }
            }
            Microsoft.VisualBasic.Interaction.AppActivate(chuangkou.Caption);
        }        private void 关闭ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            chuangkou.Quit();
            wenjian.Close(null,null);
        }        private void 查询ToolStripMenuItem1_Click(object sender, EventArgs e)
        {
            richTextBox1.Text = "";
            object ReturnObj=new object ();
            object pickPoint=new object ();
            string pickPrompt = "选取对象";
             wenjian.Utility.GetEntity(out ReturnObj, out pickPoint, pickPrompt);

Answer 2

本人刚学习ｃ＃对ｃａｄ的ActiveX Automation技术开发！
想通过wenjian.Utility.GetEntity(out ReturnObj, out pickPoint, pickPrompt);获得ｃａｄ中的对象（ｗｅｎｊｉａｎ是定义的ｄｕｃｏｍｅｎｔ对象），出现未处理 System.Runtime.InteropServices.COMException
  Message="灾难性故障 (异常来自 HRESULT:0x8000FFFF (E_UNEXPECTED))"
  Source="Autodesk.AutoCAD.Interop"
  ErrorCode=-2147418113
  StackTrace:
  在 Autodesk.AutoCAD.Interop.AcadUtilityClass.GetEntity(Object& Object, Object& PickedPoint, Object Prompt)
  在 cadjiaohu.Form1.查询ToolStripMenuItem1_Click(Object sender, EventArgs e) 位置 E:\vs\cadjiaohu\Form1.cs:行号 113
  在 System.Windows.Forms.ToolStripItem.RaiseEvent(Object key, EventArgs e)
  在 System.Windows.Forms.ToolStripMenuItem.OnClick(EventArgs e)
  在 System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e)
  在 System.Windows.Forms.ToolStripItem.HandleMouseUp(MouseEventArgs e)
  在 System.Windows.Forms.ToolStripItem.FireEventInteractive(EventArgs e, ToolStripItemEventType met)
  在 System.Windows.Forms.ToolStripItem.FireEvent(EventArgs e, ToolStripItemEventType met)
  在 System.Windows.Forms.ToolStrip.OnMouseUp(MouseEventArgs mea)
  在 System.Windows.Forms.ToolStripDropDown.OnMouseUp(MouseEventArgs mea)
  在 System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
  在 System.Windows.Forms.Control.WndProc(Message& m)
  在 System.Windows.Forms.ScrollableControl.WndProc(Message& m)
  在 System.Windows.Forms.ToolStrip.WndProc(Message& m)
  在 System.Windows.Forms.ToolStripDropDown.WndProc(Message& m)
  在 System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
  在 System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
  在 System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
  在 System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
  在 System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
  在 System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
  在 System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
  在 System.Windows.Forms.Application.Run(Form mainForm)
  在 cadjiaohu.Program.Main() 位置 E:\vs\cadjiaohu\Program.cs:行号 18
  InnerException:  
错误！望高手解答啊！不胜感激啊！
代码如下：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using Autodesk.AutoCAD.Interop;
using Autodesk.AutoCAD.Interop.Common;
using System.Reflection;
using Microsoft.VisualBasic.ApplicationServices;
namespace cadjiaohu
{
  public partial class Form1 : Form
  {
  AcadLine returnLine;
  AcadPoint returnPointObj;
  AcadBlockReference returnBlock;
  AcadCircle returncircle;
  AcadText returnTextObj;
  AcadMText returnMTextObj;
  AcadSpline returnSpline;
  AcadLWPolyline returnPolyLine;
  AcadSelectionSet mySelectionSet;
  public Int16[] FilterType= new Int16[4]{0,0,0,0};  
  public object[] FilterData= new object[4]{"*","*","*","*"};
  public Form1()
  {
  InitializeComponent();
  }  private void Form1_Load(object sender, EventArgs e)
  {  }  private void 新建ToolStripMenuItem_Click(object sender, EventArgs e)
  {
  try
  {
  chuangkou = (AcadApplication)Marshal.GetActiveObject("AutoCAD.Application");
  }
  catch
  {
  chuangkou = new AcadApplication();
  }
  finally
  {
  wenjian = chuangkou.ActiveDocument;
  chuangkou.BeginQuit += new _DAcadApplicationEvents_BeginQuitEventHandler(chuangkou_BeginQuit);
  chuangkou.Visible = true;
  Microsoft.VisualBasic.Interaction.AppActivate(chuangkou.Caption);
  }
  }  private void chuangkou_BeginQuit(ref bool Cancel)
  {
  chuangkou = null;
  wenjian = null;
  MessageBox.Show("结束了CAD程序");
  }  private void 打开ToolStripMenuItem_Click(object sender, EventArgs e)
  {  DialogResult jieguo;
  jieguo = openFileDialog1.ShowDialog();
  if (jieguo == DialogResult.OK)
  {
  if (openFileDialog1.FileName == null)
  MessageBox.Show("请选择有效的文件");
  else
  {
  try
  {
  chuangkou = (AcadApplication)Marshal.GetActiveObject("AutoCAD.Application");
  }
  catch
  {
  chuangkou = new AcadApplication();
  }
  finally
  {
  chuangkou.BeginQuit += new _DAcadApplicationEvents_BeginQuitEventHandler(chuangkou_BeginQuit);
  chuangkou.Visible = true;
  Microsoft.VisualBasic.Interaction.AppActivate(chuangkou.Caption);
  }
  chuangkou.Application.Visible = true;
  wenjian = chuangkou.Documents.Open(openFileDialog1.FileName, null, null);
  chuangkou.BeginQuit+=new _DAcadApplicationEvents_BeginQuitEventHandler(chuangkou_BeginQuit);
  }
  }
  Microsoft.VisualBasic.Interaction.AppActivate(chuangkou.Caption);
  }  private void 关闭ToolStripMenuItem_Click(object sender, EventArgs e)
  {
  chuangkou.Quit();
  wenjian.Close(null,null);
  }  private void 查询ToolStripMenuItem1_Click(object sender, EventArgs e)
  {
  richTextBox1.Text = "";
  object ReturnObj=new object ();
  object pickPoint=new object ();
  string pickPrompt = "选取对象";
  wenjian.Utility.GetEntity(out ReturnObj, out pickPoint, pickPrompt);