GetIWorkspace2 失败，并显示“调用目标已引发异常”

Question

我正在尝试使用 C# API (.NET Core 8) 与 VeriStand 交互。

根据官方教程，我编写了我的代码：

using NationalInstruments.VeriStand.ClientAPI;

class Program
{
    static void Main(string[] args)
    {
        string gatewayIp = "localhost";
        try
        {
            // Initialize Factory class instance to access NI VeriStand system
            Factory factory = new Factory();
            Console.WriteLine("Factory created successfully");
        
            IWorkspace2 workspace = factory.GetIWorkspace2(gatewayIp);
            Console.WriteLine("Workspace obtained successfully");
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Error type: {ex.GetType()}");
            Console.WriteLine($"Error message: {ex.Message}");
            Console.WriteLine($"Error stack trace: {ex.StackTrace}");
        }
    }
}

根据日志，您可以看到 Factory 创建成功，但随后失败并出现函数错误

GetIWorkspace2

:

Factory created successfully
Error type: System.Reflection.TargetInvocationException
Error message: Exception has been thrown by the target of an invocation.
Error stack trace:    at System.RuntimeType.CreateInstanceOfT()
   at System.Activator.CreateInstance[T]()
   at NationalInstruments.VeriStand.ClientAPI.ClientServerManager`1.GetClientServer(String address)
   at NationalInstruments.VeriStand.ClientAPI.ClientServerManagerInstances.GetDataServices(String address)
   at NationalInstruments.VeriStand.ClientAPI.WorkspaceImpl..ctor(String address)
   at NationalInstruments.VeriStand.ClientAPI.WorkspaceAggregator.Create(String address)
   at NationalInstruments.VeriStand.ClientAPI.Factory.GetIWorkspace2(String gateway_ip_address)
   at Program.Main(String[] args) in C:\Users\Hongb\Documents\Git\ConsoleApp1\ConsoleApp1\Program.cs:line 18

我可以确认如果我使用 VeriStand UI 将“Engine Demo”部署到

localhost

的网关，效果很好。

任何指南将不胜感激，谢谢！

Answer 1

感谢评论中的@shingo指导！在通过

Console.WriteLine(ex.ToString());

打印完整错误并出现内部异常后，它为我指明了正确的方向。

基于缺少的错误

System.ServiceModel.NetNamedPipeBinding

，我意识到这必须是.NET Framework 4应用程序而不是.NET Core 8应用程序，这里是将“Engine Demo”部署到本地主机的网关的完整工作代码

using NationalInstruments.VeriStand.ClientAPI;

namespace VeriStandController
{
    internal class Program
    {
        public static void Main(string[] args)
        {
            string gatewayIp = "localhost";
            string systemDefinitionPath = @"C:\Users\Public\Documents\National Instruments\NI VeriStand 2024\Examples\Stimulus Profile\Engine Demo\Engine Demo.nivssdf";

            Factory factory = new Factory();
            IWorkspace2 workspace = factory.GetIWorkspace2(gatewayIp);

            // Connect to the system and deploy the system definition file
            workspace.ConnectToSystem(systemDefinitionPath, true, 60000); // ms
            
        }
    }
}

此代码将部署 VeriSand 的“引擎演示”。