How to pass parameters to an external dll during runtime in c#

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VS2010

Hi everyone.
I have this dll named dllSource.dll, and it contains:

C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace dllSource
{
    public class Operation
    {
        public int Add(int x, int y)
        {
            int z;
            if ((x == 10) && (y == 20))
            {
                z = x + y;
            }
            else
            {
                z = x;
            }
            return z;
        }
    }
}

What I intend to do is to call that dll and pass parameters on it.
I want to pass 5 to x and 10 to y.
How will I so that?
Also, if I want to get the parameter type of the dll, how will I do it?

Thanks

Posted 21-Mar-13 1:02am

Member 9886727

Updated 21-Mar-13 14:32pm

v2

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CHill60 · Answer 1 · 2013-03-21T01:41:00

You will need to add your dllSource.dll to the References of your other project.
In the code for that project include a line using dllSource;
Now you can use the class in your dll like any other class or type. E.g.

C#

private void button1_Click(object sender, EventArgs e)
{
    Operation o = new Operation();
    int i = o.Add(5, 10);
    // ... etc
}

To get the parameter type(s) and return type ...

A) Manually - Right-click on the dllSource in the References section of Solution Explorer and select "View in Object Browser"

B) Whilst typing code - using my code above as an example type o. and allow the intellisense to display then hover your mouse over the function you want the information on.

C) Programmatically - Use Reflection - have a look at this article[^]

[Edit] prompted by comment below ... you will need to declare the class and function as public for any of the above to work