Explorer Your Dll

String path=openFileDialog1.FileName;
System.Reflection.Assembly a = System.Reflection.Assembly.LoadFrom(@path);
Type[] arrT = a.GetTypes();
listBox1.Items.Clear();
foreach (Type t in arrT)
{
listBox1.Items.Add("Namespace = " + t.Namespace);
listBox1.Items.Add("Class names = " + t.Name);


System.Reflection.MethodInfo[] arrMI = t.GetMethods();

System.Reflection.FieldInfo[] arrFi = t.GetFields();
System.Reflection.ConstructorInfo[] arrCi = t.GetConstructors();
foreach (System.Reflection.ConstructorInfo ci in arrCi)
{
listBox1.Items.Add("Contructor = " + ci.Name);
System.Reflection.ParameterInfo[] arrPI = ci.GetParameters();
foreach (System.Reflection.ParameterInfo pi in arrPI)
{
listBox1.Items.Add("Parameter = " + pi.Name);
}
}
foreach (System.Reflection.FieldInfo fi in arrFi)
{
listBox1.Items.Add("Field = " + fi.Name);
}
foreach (System.Reflection.MethodInfo mi in arrMI)
{
listBox1.Items.Add("Method = " + mi.Name);
System.Reflection.ParameterInfo[] arrPif = mi.GetParameters();

foreach (System.Reflection.ParameterInfo pif in arrPif)
{
listBox1.Items.Add("Parameter Name = " + pif.Name);
listBox1.Items.Add("Parameter DataType = " + pif.ParameterType.Name); 

}
}

}

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How to invoke your Dll using relative path

public Form1()
{
InitializeComponent();
Assembly a = Assembly.LoadFile(@"F:\by Ratno\Final Skripsi\UML Studio Project\NeutralNotation\bin\Debug\NeutralNotation.dll");
Module m = a.GetModule("NeutralNotation.dll");
Type typen = null;
foreach (Type t in m.GetTypes())
{
if (t.Name.Trim().Equals("Neutral"))
{
typen = t;
}
}

ConstructorInfo[] ci;
ci = typen.GetConstructors();
d=(AbstractDiagram.IDiagram) ci[0].Invoke(null);
toolStrip1.Items.AddRange(d.GetNotationCollection()); 

}

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Assembly Explorer

using System;
using System.Collections.Generic;
using System.Text;
using System.Reflection;


namespace Engine.Asm
{
/// 

/// Class ini digunakan untuk melakukan penjelajahan ke
/// dalam dll
/// 

public class AssemblyExplorer
{

private string path;
private List lstBaseName;
protected Assembly asm;
protected Type[] arrType;

public string getName()
{
return asm.ManifestModule.Name;
}
/// 

/// Buat instant baru dari class AssemblyExplorer
/// 

/// path lokasi dll yang akan diload
public AssemblyExplorer(string path)
{
try
{
this.path = path;
asm = Assembly.LoadFile(path);
////System.Windows.Forms.MessageBox.Show(asm.ManifestModule.Name);
arrType = asm.GetTypes();
lstBaseName = new List();
foreach (Type t in arrType)
{ 
if (!lstBaseName.Contains(t.BaseType.Name))
lstBaseName.Add(t.BaseType.Name);
}
}
catch (ReflectionTypeLoadException e)
{
System.Windows.Forms.MessageBox.Show(e.Message,e.GetType().Name);
}
catch (BadImageFormatException e)
{
System.Windows.Forms.MessageBox.Show(e.Message, e.GetType().Name);
}
catch (NullReferenceException e)
{
System.Windows.Forms.MessageBox.Show(e.Message, e.GetType().Name);
}
}

/// 

/// Ambil daftar kelas induk dari semua kelas
/// yang terdapat pada dll ini
/// 

/// daftar kelas induk
public List getListBaseName()
{
return lstBaseName;
}

/// 

/// Cek, apakah suatu dll memiliki kelas 
/// yang memiliki suatu kelas induk
/// 

/// nama kelas induk
/// true bila memiliki dan false bila tidak 
/// memiliki
public bool containtBaseClass(string baseClass)
{
if (lstBaseName == null)
return false;
foreach (string s in lstBaseName)
{
if (s.Trim().Equals(baseClass))
return true;
}
return false;
}

/// 

/// Ambil suatu class berdasar nama
/// 

/// nama kelas yang dicari
/// null bila tidak ditemukan, 
/// atau mengembalikan kelas 
/// bila ditemukan
public Type getClass(string ClassName)
{
if (arrType == null)
return null;
foreach (Type t in arrType)
{
if (t.Name.Equals(ClassName))
return t;
}
return null;
}

~AssemblyExplorer()
{
path = null;
asm = null;
lstBaseName = null;
arrType = null;
}


}
}

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How to Invode Dll from C# 2005

using System;
using System.Collections.Generic;
using System.Text;
using System.Reflection;
using System.IO;
using System.Windows.Forms;
namespace Engine.Asm
{
/// 

/// Class untuk melakukan invokasi atau pemicuan suatu dll
/// 

/// Jenis kembalian
public class AssemblyInvoke : AssemblyExplorer,IInvoke
{
private Type selected;
private ConstructorInfo[] arrCi;
private string name, extension,dir;
/// 

/// Constructor untuk menciptakan instace dari class ini
/// 

/// path dari dll yang akan diinvokasi
public AssemblyInvoke(string path)
: base(path)
{

FileInfo fif = new FileInfo(path);
name = fif.Name;
dir = fif.DirectoryName;
extension = fif.Extension;
}
/// 

/// Invokasi atau picu dll
/// 

/// Nama class yang akan diinvokasi
/// Hasil kembalian yang berupa class relative
public ResultType Invoke(string ClassNameToInvoke)
{
selected = getClass(ClassNameToInvoke);
arrCi = selected.GetConstructors();
return (ResultType)arrCi[0].Invoke(new object[] { dir,name,null});
}
}
}

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How to Invoke Jar File using Dynamic Path

This post describe how to invoke some jar file using dynamic path.

First Create ZipClassLoader

package Lib;

import java.io.ByteArrayOutputStream;

import java.io.File;

import java.io.IOException;

import java.io.InputStream;

import java.net.MalformedURLException;

import java.net.URL;

import java.util.ArrayList;

import java.util.Enumeration;

import java.util.NoSuchElementException;

import java.util.zip.ZipEntry;

import java.util.zip.ZipFile;

public  class ZipClassLoader extends ClassLoader {

    private  ZipFile file;

    public ZipClassLoader(String filename) throws IOException {

        this.file = new ZipFile(filename);

    }

    public ZipClassLoader(File File_Zip) throws IOException {

        this.file = new ZipFile(File_Zip);

    }

    public ZipEntry[] getListEntry(){

        Enumeration eZe = file.entries();

        ArrayList lstZe=new ArrayList();

        while (eZe.hasMoreElements()) {

            lstZe.add(eZe.nextElement());

        }

        ZipEntry[] arrZe=new ZipEntry[lstZe.size()];

        lstZe.toArray(arrZe);

        return arrZe;

    }

    @Override

    protected Class findClass(String name) throws ClassNotFoundException {

        ZipEntry entry = this.file.getEntry(name.replace('.', '/') + ".class");

        if (entry == null) {

            throw new ClassNotFoundException(name);

        }

        try {

            byte[] array = new byte[1024];

            InputStream in = this.file.getInputStream(entry);

            ByteArrayOutputStream out = new ByteArrayOutputStream(array.length);

            int length = in.read(array);

            while (length > 0) {

                out.write(array, 0, length);

                length = in.read(array);

            }

            return defineClass(name, out.toByteArray(), 0, out.size());

        }

        catch (IOException exception) {

            throw new ClassNotFoundException(name, exception);

        }

    }

    protected Class findClass(ZipEntry zipEntry) throws IOException {

        ZipEntry entry = zipEntry;

        byte[] array = new byte[1024];

//        ZipFile.

        InputStream in = this.file.getInputStream(entry);

        ByteArrayOutputStream out = new ByteArrayOutputStream(array.length);

        int length = in.read(array);

        while (length > 0) {

            out.write(array, 0, length);

            length = in.read(array);

        }

//        defi

        return defineClass(zipEntry.getName(), out.toByteArray(), 0, out.size());

    }

    

    

    @Override

    protected URL findResource(String name) {

        ZipEntry entry = this.file.getEntry(name);

        if (entry == null) {

            return null;

        }

        try {

            return new URL("jar:file:" + this.file.getName() + "!/" + entry.getName());

        }

        catch (MalformedURLException exception) {

            return null;

        }

    }

    @Override

    protected Enumeration findResources(final String name) {

        return new Enumeration() {

            private URL element = findResource(name);

            public boolean hasMoreElements() {

                return this.element != null;

            }

            public URL nextElement() {

                if (this.element != null) {

                    URL element = this.element;

                    this.element = null;

                    return element;

                }

                throw new NoSuchElementException();

            }

        };

    }

    

}

U can use ZipClassLoader by main class

/*

 * To change this template, choose Tools | Templates

 * and open the template in the editor.

 */

package jarinvoker;

import Lib.ZipClassLoader;

import java.io.File;

import java.io.IOException;

import java.util.zip.ZipEntry;

/**

 *

 * @author Ratno Kustiawan

 */

public class Main {

    /**

     * @param args the command line arguments

     */

    public static void main(String[] args) throws IOException, ClassNotFoundException, InstantiationException, IllegalAccessException {

        // TODO code application logic here

        File f=new File("H:/Prepare For Modular System/JarToInvoke/dist/JarToInvoke.jar");

        ZipClassLoader z=new ZipClassLoader(f);

        System.out.println("-------------------------------------");

        System.out.println("List Entry");

        System.out.println("-------------------------------------");

        ZipEntry[] lstEntry=z.getListEntry();

        for (ZipEntry zipEntry : lstEntry) {

            System.out.println(zipEntry.getName());

        }

        System.out.println("-------------------------------------");

        System.out.println("Invoke Method");

        System.out.println("-------------------------------------");

        Class c=z.loadClass("proces.Target");

        c.newInstance();

    }

}

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How to Read Working Directory in Java

This posting is tutorial to get working directory from java application. Working directory means a directory where our java application running.

package readworkingdirektory;

import java.io.IOException;

/**

 *

 * @author Ratno Kustiawan

 */

public class Main {

    /**

     * @param args the command line arguments

     */

    public static void main(String[] args) throws IOException {

        // TODO code application logic here

        System.out.println(System.getProperty("user.dir"));

        

    }

}

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