此前c#调用Grip，本人是采用的抽取libufun内部函数的方式（因为c#UFUN本身没有对“UF_call_grip”封装），使用相对比较麻烦，今天刚发现c#的nxopen中也是有调

用Grip的函数的。并且调用方式也简单许多。

官方帮助文档：

 参数列表 1：需要调用的Grip程序 2：Object基类数组

需要传递的参数全部塞进数组里就可以。数组长度必须与Grip中ufargs接收数量一致。

以设定孔加工工序几何体举例：

Grip代码：

Grip代码逻辑此处不做解释。 

调用代码：

  1 using System;
  2 using System.Runtime.InteropServices;
  3 using NXOpen;
  4 using NXOpen.UF;
  5 using NXOpen.Utilities;
  6 
  7 public class Program
  8 {
  9     // class members
 10     private static Session theSession;
 11     private static UI theUI;
 12     private static UFSession theUfSession;
 13     public static Program theProgram;
 14     public static bool isDisposeCalled;
 15 
 16     [DllImport("libufun.dll", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi, EntryPoint = "UF_call_grip")]
 17 
 18     internal static extern int _CallGrip(string grip_executable, int argument_count, ref Args[] gruf_arg_list);
 19     public static void CallGrip(string grip_executable, int argument_count, ref Args[] gruf_arg_list)
 20     {
 21         JAM.StartUFCall();
 22         int num = _CallGrip(grip_executable, argument_count, ref gruf_arg_list);
 23         JAM.EndUFCall();
 24     }
 25 
 26 
 27     //------------------------------------------------------------------------------
 28     // Constructor
 29     //------------------------------------------------------------------------------
 30     public Program()
 31     {
 32         try
 33         {
 34             theSession = Session.GetSession();
 35             theUI = UI.GetUI();
 36             theUfSession = UFSession.GetUFSession();
 37             isDisposeCalled = false;
 38         }
 39         catch (NXOpen.NXException ex)
 40         {
 41             // ---- Enter your exception handling code here -----
 42             // UI.GetUI().NXMessageBox.Show("Message", NXMessageBox.DialogType.Error, ex.Message);
 43         }
 44     }
 45 
 46     //------------------------------------------------------------------------------
 47     //  Explicit Activation
 48     //      This entry point is used to activate the application explicitly
 49     //------------------------------------------------------------------------------
 50     public static int Main(string[] args)
 51     {
 52         int retValue = 0;
 53         try
 54         {
 55             theProgram = new Program();
 56             
 57             Selection.SelectionType[] type = new Selection.SelectionType[1];
 58             type[0] = Selection.SelectionType.All;
 59             theUI.SelectionManager.SelectTaggedObjects("选择", "选择对象", Selection.SelectionScope.WorkPart, false, type, out TaggedObject[] objtmp);
 60             TaggedObject[] obj = new TaggedObject[200];
 61             TaggedObject tagged = theSession.Parts.Work as TaggedObject;
 62             if (objtmp.Length == 0)
 63             {
 64                 return retValue;
 65             }
 66 
 67             //为确保传递数组的长度与Grip一致，所以给数组中的空元素
 68             //赋值Grip中无法使用的类型，Grip运行时会遇错跳转。
 69             for (int i = 0; i < 200; i++)
 70             {
 71                 try
 72                 {
 73                     obj[i] = objtmp[i];
 74                 }
 75                 catch (Exception)
 76                 {
 77                     obj[i] = tagged;
 78                 }
 79             }
 80 
 81             try
 82             {
 83                 string operName = "TTTTT";
 84                 string gripName = @"D:\FXP-wg\Grx\testhole.grx";
 85                 object[] inputToGrip = new object[3];
 86                 inputToGrip[0] = operName;  //操作名
 87                 inputToGrip[1] = obj;       //几何体数组
 88                 inputToGrip[2] = Convert.ToDouble(obj.Length);  //数组长度
 89                 object[] getedRet = Session.GetSession().ExecuteGrip(gripName, inputToGrip);  //Call
 90             }
 91             catch (Exception exInfo)
 92             {
 93                 theUfSession.Ui.OpenListingWindow();
 94                 theUfSession.Ui.WriteListingWindow("出错，错误原因：" + exInfo.ToString());
 95             }
 96 
 97 
 98             //TODO: Add your application code here 
 99 
100             theProgram.Dispose();
101         }
102         catch (NXOpen.NXException ex)
103         {
104             // ---- Enter your exception handling code here -----
105             theUfSession.Ui.OpenListingWindow();
106             theUfSession.Ui.WriteListingWindow("出错，错误原因：" + ex.ToString());
107         }
108         return retValue;
109     }
110 
111     //------------------------------------------------------------------------------
112     // Following method disposes all the class members
113     //------------------------------------------------------------------------------
114     public void Dispose()
115     {
116         try
117         {
118             if (isDisposeCalled == false)
119             {
120                 //TODO: Add your application code here 
121             }
122             isDisposeCalled = true;
123         }
124         catch (NXOpen.NXException ex)
125         {
126             // ---- Enter your exception handling code here -----
127 
128         }
129     }
130 
131     public static int GetUnloadOption(string arg)
132     {
133         //Unloads the image explicitly, via an unload dialog
134         //return System.Convert.ToInt32(Session.LibraryUnloadOption.Explicitly);
135 
136         //Unloads the image immediately after execution within NX
137         return System.Convert.ToInt32(Session.LibraryUnloadOption.Immediately);
138 
139         //Unloads the image when the NX session terminates
140         // return System.Convert.ToInt32(Session.LibraryUnloadOption.AtTermination);
141     }
142 
143     internal static IntPtr ArrayToIntptr(Tag[] source)
144     {
145         if (source == null)
146             return IntPtr.Zero;
147         unsafe
148         {
149             fixed (Tag* point = source)
150             {
151                 IntPtr ptr = new IntPtr(point);
152                 return ptr;
153             }
154         }
155     }
156 }

需要注意的是，Grip中所需要的Number类型，是对应C#double类型的，所以传递参

数时必须以double类型来传递。

inputToGrip[2] = Convert.ToDouble(obj.Length);

演示：

补充一句， 使用for循环固定数组长度的方式好像有点笨拙，有更好思路的朋友欢迎指正。