How access dll's method from nodejs?

[Sudhir Goswami]

Hi Geeks,

I have library which contains some methods and property written in C# Language ,I want to access those methods from Node.js?

Below code is my C# Library code.

class Employee
{
    public int Id { get; set; }

    public string EmpName { get; set; }

    public DateTime EmpDob { get; set; }

    public Employee getEmpDetails()
    {
        Employee objEmployee = new Employee();

        objEmployee.Id = 11203256;

        objEmployee.EmpName = "John Miller";

        objEmployee.EmpDob = System.DateTime.Now;

        return objEmployee;
    }        
}

So above code produced Employee.dll , Now I want use my getEmpDetails() from node js.

[Bruno Jouhier]

Microsoft's edge library may help you: http://tjanczuk.github.io/edge/#/

[Sudhir Goswami]

I have a C# class which contains plenty of methods. I have to access those methods from within Node.js, with the help of edge.js. The problem is all previous C# methods are synchronous, while calling from Node.js it says call as asynchronous.

So I wrote a wrapper class, and tried to call asynchronously, but I received this error:

ERROR: "Unable to access the CLR method to wrap through reflection. Make sure it is a public instance method"

---

public class Test
{
    string XyzId;
    string XyzRole;

    public Test(string xyzId, string xyzRole)
    {
        XyzId = xyzId;
        XyzRole = xyzRole;
    }
    private static Dictionary<int, Person> _people = new Dictionary<int, Person>();

    // My asynchronous Method wrapper over synchronous Method
    public async Task<object> ExecuteLogWarning(dynamic input)
    {
        Test tst = new Test("POC", "POC");
        var task = Task.Run(() => LogWarningTest((string)input.errorCode, (string)input.message));
        return task;
    }
    //synchronous method 
    public void LogWarningTest(string errorCode, string message)
    {
        _people.Add(Convert.ToInt32(errorCode), new Person(1, errorCode, message));
    }
}

public class Person
{
    public string FirstName;
    public string LastName;
    public int ID;

    public Person(int id, string firstName, string lastName)
    {
        ID = id;
        FirstName = firstName;
        LastName = lastName;
    }
}

---

Node.js Code

 var edge = require('edge');

 var ExecuteLogWarning = edge.func({
    assemblyFile:'Test.dll',   
    typeName:'Logging.Test',            
    methodName:'ExecuteLogWarning'
});   

var joe = ExecuteLogWarning({
errorCode:"1",
message:"Message Runtime"    
}, true);


var getPerson = edge.func({
    assemblyFile:'Test.dll',
    typeName:'Logging.Test',
    methodName:'GetPerson'
});

console.log(getPerson(1, true));