Creating

Windows Forms App (.NET Framework)

uses .NET Framework 4.7.2

Windows Forms App

uses .NET 6.0

Using Constructor

public partial class MyForm : System.Windows.Forms.Form 
{ 
  public MyForm() 
  { 
    InitializeComponent(); 
    this.Text = "Form Title"; 
  } 
} 

Using the Load Event

This is a windows form Built-in event

public partial class Form1 : System.Windows.Forms.Form 
{ 
  private void Form1_Load(object sender, 
                          EventArgs e) 
  { 
    this.Text = "Form Title"; 
  } 
} 

this Keyword

Passing In Arguments

It is possible to pass information to a windows form however you cannot use the Load Event for this.
The Load event does not allow arguments to be passed to it.

Constructor

This allows you to pass information into the form.
You can use a constructor which has the same name as the windows form.

protected string _passedIn; 

public Form1(string sValue) 
{ 
   InitializeComponent() 

   this._passedIn = sValue; 
} 

If you are using the constructor you can probably move any code from the Load event into the constructor.
So that all your initialisation code is in one place.

Passing Out Results

Instead of actually passing values out of the windows form, one method is to use static class fields.

Static Fields

The simpliest way is to use a public static field inside an Internal Class.
This will allow the field to be accessed from anywhere, including inside Windows Forms.

internal class modSpecific 
{ 
   public static string _ProposalName; 
}