Winform C# Read and execute source code from server

I have a winform app, I completed with business model and update function. But when I learn about security .Net, I found that almost impossible to anti crack/hacking with obfuscation.

So I want move 99.99% source code to cloud. But I've not found any doc that useful for making it.

Can I do my idea as below:

using ....;
namespace myApp
{
public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

public GetSourceClass()
    {
     //  Here i want get all source code, include all class and all 
     //   variables from server.Is it possible?
    }

private void Form1_Load(object sender, EventArgs e)
    {
        GetSourceClass();
    }