System.Reflection

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Hi,
Im loading an Exe into my application using Assembly.LoadFile().
From that is it possible to get the Method of a particular class from that EXE.
And im having an instance of a Structure as a member variable of my application.After loading that exe, i have to fill that instance of the structure member variable of my application in that loaded assembly.The complexity is that loaded assembly will not have that structure datatype. how to accomplish this?
plz help me....
Thanks in advance

Posted 24-Nov-10 19:10pm

Ramya 2010

Updated 24-Nov-10 19:55pm

v2

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3 solutions

Solution 3

Struct and its fields sould be Public, otherwise we cant access it. only properties and methods only can access via MethodInfo, use FieldInfo instead.

make sure your struct and its fields were public

C#

public struct student
{
    public string name ;
    public int age;
    string grade;
    float average;

    public string Name
    {
        get { return name; }
        set { name = value; }
    }

    public int Age
    {
        get { return age; }
        set { age = value; }
    }

}

Posted 24-Nov-10 21:58pm

Vasanth@n

Solution 1

See here[^].

Posted 24-Nov-10 19:15pm

Abhinav S

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Vasanth@n · Accepted Answer · 2010-11-24T20:03:00

yep, its possible...
you can get it over the example below.

here I have created a DummyClass

C#

namespace DummyClass
{
    public class DummyClass
    {
        public int Add(int x, int y)
        {
            return x + y;
        }

        public int Sub(int x, int y)
        {
            return x - y;
        }
    }
}

and I am going to Invoke pirticular method Add() of the DummyClass using reflection

private void CallReflection()
        {
            Assembly assembly;
            Type type;
            MethodInfo[] Methods;
            object result = null;
            
            object classObject;
            MethodInfo mdInfo;
            ParameterInfo[] ParameterTypes;
            string asmName = @"D:\Reflection\..\bin\Debug\DummyClass.dll";
            assembly = Assembly.LoadFile(asmName);
            type = assembly.GetType("DummyClass.DummyClass");
            Methods = type.GetMethods();
            classObject = Activator.CreateInstance(type);
            mdInfo = classObject.GetType().GetMethod("Add");
            
            ParameterTypes = mdInfo.GetParameters();
            if (ParameterTypes.Length > 0)
            {
                object[] argument ={ 9,6};
                result = mdInfo.Invoke(classObject, argument);
            }
            else
            {
                result = mdInfo.Invoke(classObject, null);
            }
            if (result != null)
                MessageBox.Show(result.ToString());
        }

Think it would help you to clarify your problem.

Cheers,
Vasanth